GB2173102A - Cleaning/disinfecting system - Google Patents
Cleaning/disinfecting system Download PDFInfo
- Publication number
- GB2173102A GB2173102A GB08607825A GB8607825A GB2173102A GB 2173102 A GB2173102 A GB 2173102A GB 08607825 A GB08607825 A GB 08607825A GB 8607825 A GB8607825 A GB 8607825A GB 2173102 A GB2173102 A GB 2173102A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- hypochlorite
- cleaning
- disinfecting
- detergent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004140 cleaning Methods 0.000 title claims abstract description 21
- 230000000249 desinfective effect Effects 0.000 title claims abstract description 14
- 239000003599 detergent Substances 0.000 claims abstract description 15
- 235000013336 milk Nutrition 0.000 claims abstract description 9
- 239000008267 milk Substances 0.000 claims abstract description 9
- 210000004080 milk Anatomy 0.000 claims abstract description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 9
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 8
- 239000010452 phosphate Substances 0.000 claims abstract description 6
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical group Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical group [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 9
- 239000000460 chlorine Substances 0.000 claims description 9
- 229910052801 chlorine Inorganic materials 0.000 claims description 9
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 8
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 4
- 239000011591 potassium Substances 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000375 suspending agent Substances 0.000 claims description 3
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- RYCLIXPGLDDLTM-UHFFFAOYSA-J tetrapotassium;phosphonato phosphate Chemical compound [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O RYCLIXPGLDDLTM-UHFFFAOYSA-J 0.000 claims description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 2
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims 1
- 235000019797 dipotassium phosphate Nutrition 0.000 claims 1
- 229910000396 dipotassium phosphate Inorganic materials 0.000 claims 1
- 235000019800 disodium phosphate Nutrition 0.000 claims 1
- 229910000397 disodium phosphate Inorganic materials 0.000 claims 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims 1
- 239000001488 sodium phosphate Substances 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- 238000009472 formulation Methods 0.000 description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 235000021317 phosphate Nutrition 0.000 description 6
- 230000003115 biocidal effect Effects 0.000 description 5
- 239000003139 biocide Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 239000003352 sequestering agent Substances 0.000 description 3
- MHGOKSLTIUHUBF-UHFFFAOYSA-M 2-ethylhexyl sulfate(1-) Chemical compound CCCCC(CC)COS([O-])(=O)=O MHGOKSLTIUHUBF-UHFFFAOYSA-M 0.000 description 2
- 229920000388 Polyphosphate Polymers 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002906 microbiologic effect Effects 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 239000001205 polyphosphate Substances 0.000 description 2
- 235000011176 polyphosphates Nutrition 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- 235000011118 potassium hydroxide Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- SGHZXLIDFTYFHQ-UHFFFAOYSA-L Brilliant Blue Chemical compound [Na+].[Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=2C(=CC=CC=2)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC(S([O-])(=O)=O)=C1 SGHZXLIDFTYFHQ-UHFFFAOYSA-L 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 102000014171 Milk Proteins Human genes 0.000 description 1
- 108010011756 Milk Proteins Proteins 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000000721 bacterilogical effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000012505 colouration Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- JFVXEJADITYJHK-UHFFFAOYSA-L disodium 2-(3-hydroxy-5-sulfonato-1H-indol-2-yl)-3-oxoindole-5-sulfonate Chemical compound [Na+].[Na+].Oc1c([nH]c2ccc(cc12)S([O-])(=O)=O)C1=Nc2ccc(cc2C1=O)S([O-])(=O)=O JFVXEJADITYJHK-UHFFFAOYSA-L 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- -1 hypochlorite anion Chemical class 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000021243 milk fat Nutrition 0.000 description 1
- 235000021239 milk protein Nutrition 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- MEUIIHOXOWVKNP-UHFFFAOYSA-N phosphanylformic acid Chemical class OC(P)=O MEUIIHOXOWVKNP-UHFFFAOYSA-N 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- SATVIFGJTRRDQU-UHFFFAOYSA-N potassium hypochlorite Chemical compound [K+].Cl[O-] SATVIFGJTRRDQU-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229940001593 sodium carbonate Drugs 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C7/00—Other dairy technology
- A23C7/02—Chemical cleaning of dairy apparatus; Use of sterilisation methods therefor
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/395—Bleaching agents
- C11D3/3958—Bleaching agents combined with phosphates
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Pest Control & Pesticides (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Agronomy & Crop Science (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Detergent Compositions (AREA)
Abstract
A cleaning/disinfecting system comprises a hypochlorite-providing component in association with a partially neutralized ortho phosphate or complex phosphate detergent. It is particularly useful for cleaning and/or disinfecting milk handling and/or storing equipment at lower than conventional pH and temperature.
Description
SPECIFICATION
Cleaning/disinfecting system and process
This invention relates to a cleaning/disinfecting system and process; more particularly, it relates to the cleaning/disinfecting of milk and storing equipment, such as the generally twice daily circulatory cleaning of pipeline milking machinery.
Currently, it is common practice to clean, for example, pipes and containers which have come into contactwith milk using solutions of caustic soda and/or potash with sodium hypochlorite, sequestrants and wetting agents. Generally, such solutions must be used hot (60-85"C) and are somewhat hazardous at high pH (11-14).
In this field, it is important that the results are both visually and microbiologicallyacceptable. There is also a public safety aspect and forthe United
Kingdom, for example, the Milk and Dairy Regulations 1959 must be satisfied. Before a new system may be adopted, it must in this case be approved underthe auspices of MAFF (Ministry ofAgriculture, Fisheries and Food).
The conventional approach may be regarded as relying on a good detergent in association with an adequate biocide. More particularly, earlier highly alkaline systems have used caustic soda, potash or sodiumcarbonate, together with sodium hypochlorite. Good sequestrants have also been required to preventscaleformation. Such solutions must be used hot, typically 77-82"C, in orderto have the desired effect. In particular, biocide activity drops dramatically with temperature and so is notfeasible to attempt two use Iowertemperatureswith such products.
In orderto be allowed onto the market in the U.K. at least, a new system must demonstrate at least equivalent cleaning and disinfecting to available systems.
The present system avoids the strongly alkaline component and may be regarded as an adequate detergent in combination with a more effective biocide. The biocide is more efficient as it is used at a lower pH. This significant enhancement means that a lowertemperature, still above the melting point of milk fat, may be used, while maintaining a satisfactory level of performance. An additional adavantage is that the lower pH reduces the tendency towards hard waterscaleformation. Polyphosphates and polyacry lates which may be used are particularly good sequestrants for calcium and magnesium salts, the former being present in milk protein.
For purposes of illustration only, the present invention will be generally described in relation to milk handling and storing equipment.
As indicated above, a means has now been found of cleaning milkhandling equipmentto give at least equivalent lower cleaning solution temperatures. The present system not only cleans at least as satisfactorily at lowertemperatures, byt also at lower pH. It would be expected that, although visual cleanliness might be achievable at lower temperatures, comparable microbiological resultstotheconventional 60-850Ccleaners would not. Surprisingly, the present system has been found to give totally acceptable results at a tempera to rue of, for example, 40-55"C and a pH of, for example, 8-9 Interalia, the lower pH range means that hypochlorite is in a more effective form.
As will be appreciated, the present invention enjoys significant advantages. For example, at least equivalent results both visual and microbiological may be obtained at substantially lowertemperatures. In addition to energy and hence cost savings, this may also be more convenient and even marginally more attractive from the safety viewpoint. Moreover, both the compositions as would be sold and in-use solutions would be inherently safer materials to handle than conventional cleaners in particular as regards pH.
All users stand to benefit from the reduction in energy requirements, but the present invention would appearto be a particularly attractive proposition in those cases where waste heat may be recovered from milk refrigeration equipment providing a ready supply of water at about the desired temperature.
Depending on the prevailing pH, hypochlorite may be regarded as giving rise to three cleaning species of varying effectiveness. Under acidic conditions, chlorine gas is formed and this may have its own difficulties. Underthe conventional highly alkaline conditions, OCI predominates. The present system is designed to operate above neutral and belowthe conventional pH in the slightly alkaline range where undissociated HOCI is at an appreciable level, this is being in particular a more efficient bactericide than
OCI . As at least as satisfactory results are obtained with the present system, it might be said that the effect of the lowertemperature is offset by increased activity.It is thought that, depending on the microorganism in question, the particular hypochlorite species, i.e. hypochlorous acid, has a biocidal effect which may be orders of magnitude greater than the hypochlorite anion alone.
(Reference may be made to Biack et al, J. American WaterWorksAssociation, 57,1965,1401-21, and
Block, "Disinfection, Sterilization, and Preservation",
Lea and Febiger 1977, E.G. 174-5).
The present invention provides a cleaning/disinfecting system characterised in that it comprises a hypochlorite-providing component in association with a partially neutralised ortho phosphate orcomplex phosphate detergent.
The present invention also provides a process for the production of such a cleaning/disinfecting system characterised in that it comprises providing the components in association.
The present system involves the use of hypochlorite, or rather a hypochlorite-providing component, which sterilant carries official approval, in association with certain detergents. More particularly, suitable detergents may be described as partially neutralised ortho phosphates our complex phosphates. Examples include: sodium or potassium tripolyphosphate, disodium ordipotassium phosphate; sodium hexametaphosphate and tetrapotassium pyrophosphate. The hypochlorite-providing component is generally a hypochlorite, which may be sodium or potassium hypochlorite, preferably sodium.
Commonly, a compatible chlorine-stable surfactant and/or suspending agentand/orscale-control agent is/are also used. In general terms, one or more conventional additives may be used in conventional amounts.
The present two-part system preferably requires a compatible chlorine-stable suspending agent so that soil dispersion/suspension may be optimised and particularly to prevent the formation of adherent scale in hardwaterareas. For exam ple, a polyacrylate having a molecularweightof,say2000to 10,000, preferably about 4000, may be particularly suitable, for example "Dispex N 40, the sodium salt ofa polyacrylicacid. Other polycarboxylic acids may also be used,forexample polyameic acids and copolymers, phosphinocarboxylicacids and saltsthereof.
Commonly, it is advantageous also to use a chlorinestable surfactant, more particularly an anionic or possibly a non-ioniclow-foam surfactant, such as 2-ethyl-hexyl sulphate of"Dowfax3B2".
The presentformulations are generally liquid, but solid powderforms are possible. They may be diluted ordissolved in water as desiredto give in-use solutions of the required strength.
The present invention further relates to such in-use solution and to the production thereof by mixing the present system with water.
According to the present invention, the compositions may be presented as such or may conveniently be in two-partform. Moreover, the present invention may be adapted for use with a dosing machine system which mightalso dispense detergents particularly for bulktankcleaning. Such a system might involve a common hypochlorite source and mightworksequen- tially with caustic soda for tank cleaning.
In addition to the materials and the production thereof, the present invention also relates to the use thereof in particularinthecleaning/disinfectingof milk handling and storing equipment, in particular circulatory cleaning of pipeline milking machinery.
Accordingly, the present invention provides a cleaning and/or-disinfecting process characterised in that it comprises the use of a system or solution in accord ance with the present invention orsuch produced bya process in accordance with the present invention.
Preferably, milk handling and/or storage equipment is cleaned and/or disinfected.
The rangeofcomponentconcentrationsforthe present purposes is very wide and depends, interalia, onthefinal use rate. Forexample, in a liquid product, the content of phosphate detergent, such as polyphosphate or hydrogen phosphate, may be from 0.1 to 90% as potassium tripolyphosphate liquor (50%). In a solid product, for example, from 50 to 95% of, say, sodium tripolyphosphate might be typical, although dilution with an inertingredient, such as sodium sulphate, would be possible. For application abnormal use rates of from 0.25 to 1 levels offrom 1 to 50% as potassium tripolyphosphate liquor (50%) would be particularly useful. (Percentagesw/w, unless otherwise indicated).
Typically, in-use solutions will prnvide from 50 to 1000 ppm available chloride, preferablyfrom 100 to 500 ppm, more preferably about 350 ppm. Depending on water hardness, of course, from 0.01 to 5% w/w of detergent is generally suitable, preferablyfrom 0.01 to 0.1% w/w, more preferably about 0.03% w/w. As
mentioned above, the present system is designed to function in the slightly alkaline range and so the in-use solutions may have a pH of between 7 and 11, preferably from 8 to 9.
The present system may include from 0.1 to 50% of a suspending agent. At common use rates, from 0.1 to 10% would betypical.As regards the optional surfactant, up to 10% might be used depending on the final dilution and the foaming properties, while from 0.05 to 2.5% would be more typical.
When the presentsystem is not in combined form, a small amount of a conventional dye is commonly also added to impart a desired colouration. No dye would normally be added to the combined composition because of the presence of chlorine.
In the case offormulation as a combined composition, the range of component concentrationstendsto be more limited, for example owing to the possibility ofcrystallisation ofthe sodium salts ofthe phosphate(s) present. Typically, from 0.1 to 50% sodium hypochlorite (14-16% available chlorine) would be suitable, the other ranges being as above. As normal use rates, from 10 to 50% might be used in preferred formulations.
The currently-approved concentration rangefor detergent/sterilisers in the United Kingdom is 4/8 fl.
oz/10 gallons (0.25-0.5% v/v), butthere is no reason why these formulations should not be used outside this range from a neat productto 0.1%. Hypochlorite is conventionally used forsterilising milking parlours at 4fl.oz/1 0 gallons (0.25% v/v) and when used forthe present purposes the usual concentration range would again be 4-8 fl.oz/10 gallons (0.25-0.5% v/v).
Certain preferred embodiments ofthe present invention will now be illustrated.
Formulation 1 % WIZ Potassiumtripolyophosphate liquor (50%) 16.670
Dowfax3B2 0.420
Dispex N40 1.670
Ariat Brilliant Blue (Food Blue2) 0.001
Water to 100.000 (Dowfax 3B2 is a mixture of:
To the water,th e oth er i ng redients were added in the above order and mixed until homogeneous.
The above formulation may be used at6fl.oz/1 0 gallons (0.37% v/v) in combination with sodium hypochlorite (11.7% available chlorine) at 5 fl .oz/10 Sfl.oz/1 0 gallons (0.31% v/v).
Formulation 2 NO W/W Sodium hypochlorite (11.7% available
chlorine) 31.25 Potassiumtripolyphosphate liquor(50%) 6.20
Dispex N40 0.62 Niaproof08 :2-ethyl hexyl sulphate) 0.15
Water to 100.00
To the water, were added thetripolyphosphate,
Dispex N40 and Niaproof 08 and mixed until homogeneous. Then, the hypochlorite was blended with stirring. Formulation 2 is suitable for use at 1.0% v/v.
Forthe purposes of illustration only, there follows a summary ofsome bacteriological test rinses on four farm sites using Formulation 1 and sodium hypochlorite.
Results are logarithms of counts/metre2.
Farm 1 Farm 2 Farm 3 Farm 4
Deosan D60 at 6.43 6.49 6.08 7.20 77-82"C and 5.88 6.58 6.45 8.77 6 om/lO gallons 6.67 6.g2 6.88 6.90 (0.3so w/v) 6.76 6.48 6.89 6.88
6.49 5.95 6.88 6. 94 6.34 6.04 7.11 7.09 6.93 5.95 6.80 7.42
7.12 6.83 7.09 6.81
Mean 8.58 6.41 6.78 7.02
Formulation 1 at 5.96 6.08 6.60 6. 85 50-55C and 5.90 8.41 6.28 7.03
6 fl.oz/10 gallons - 5.90 6.5G 6.36 6.99 (0.3T: : v/v) and 6.20 6.58 6.30 8.88 sodium hypochlorite 6.54 7.43 6.81 7.73 (11, Available Chlorine) 6.68 6.38 6.65 7.03
at 5 fl.oz/10 gallons 6.65 6.32 6.51 7.42 (0.311 v/v) 8.97 7.88 7.08 7.54 Mean 6.53 6.62 6.57 7.11 ("Deosan D60" is an approved Diversey product, which is provided as a powder containing essentially caustic soda, a chlorine-release agent, sodium tripolyphosphate and a surfactant.)
Claims (27)
1. A cleaning/disinfecting system characterised in that it comprises a hypochlorite-providing component in association with a partially neutralised ortho phosphate or complex phosphate detergent.
2. A system as claimed in claim 1 wherein the hypochlorite-providing component is a hypochlorite.
3. Asystem as claimed in claim 2whereinthe hypochlorite is sodium hypochlorite.
4. A system as claimed in any of claims 1 to 3 wherein the detergent is sodium or potassium tripolyphosphate, disodium or dipotassium phosphate, sodium hexametaphosphate or tetrapotassium pyrophosphate.
5. A system as claimed in any of claims 1 to 4 wherein one or more conventional additives is/are present.
6. Asystem as claimed in claim Swherein a compatible chlorine-stable surfactant and/or suspending agent and/or scale-control agent is/are present.
7. A system as claimed in any of claims 1 to 6 wherein it is in liquid form or in solid form.
8. A system as claimed in any of claims 1 to 7 wherein it is in the form of a composition or in two-partform.
9. An in-use cleaning/disinfecting solution characterised in that it comprises water and a system as claimed in any of claims 1 to 8.
10. A solution as claimed in claim 9 wherein there is provided from 50 to 1000 ppm available chlorine.
11. A solution as claimed in claim 10 wherein there is providedfrom 1 OOto 500 ppm available
chlorine.
12. Asolution as claimed in claim 11 wherein there is provided about 350 ppm available chlorine.
13. Asolution as claimed in any of claims 9 to 12 wherein there is provided from 0.01 to 5% w/w of
detergent.
14. A solution as claimed in claim 13wherein there is provided from 0.01 to 0.1 % w/w of detergent
15. A solution as claimed in claim 1 4wherein there is provided about 0.03% w/w of detergent.
16. A solution as claimed in anyof claims 9to 15 wherein the pH is between 7 and 11.
17. A solution as claimed in claim 16wherein the pH isfrom 8to 9.
18. A processforthe production of a cleaning/ disinfecting system as claimed in any of claims 1 to 8 characterised in that it comprises providing the components in association.
19. A processforthe production of an in-use cleaning/disinfecting solution as claimed in any of claims 9 to 17 characterised in that it comprises mixing with water a system as claimed in any of claims 1 to 8.
20. A cleaning and/or disinfecting process characterised in that it comprises the use of a system as claimed in any of claims 1 to 8 or produced by a process as claimed in claim 18 or a solution as claimed in any of claims 9to 17 or produced by a process as claimed in claim 19.
21. A process as claimed in claim 20 wherein milk handling and/or storage equipment is cleaned and/or disinfected.
22. A system as claimed in any of claims 1 to 8 substantially as herein described with particular reference to the exemplification.
23. A solution as claimed in any of claims 9to 17 substantially as herein described with particular reference to the exemplification.
24. A process as claimed in claim 18 substantially as herein described with particular referencetothe exemplification.
25. A process as claimed in claim 19 substantially as herein described with particular reference to the exemplification.
26. A process as claimed in claim 20 or claim 21 substantially as herein described with particular reference to the exemplification.
27. The invention substantially as herein described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB858508289A GB8508289D0 (en) | 1985-03-29 | 1985-03-29 | Cleaning/disinfecting system & process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8607825D0 GB8607825D0 (en) | 1986-04-30 |
| GB2173102A true GB2173102A (en) | 1986-10-08 |
Family
ID=10576904
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB858508289A Pending GB8508289D0 (en) | 1985-03-29 | 1985-03-29 | Cleaning/disinfecting system & process |
| GB08607825A Withdrawn GB2173102A (en) | 1985-03-29 | 1986-03-27 | Cleaning/disinfecting system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB858508289A Pending GB8508289D0 (en) | 1985-03-29 | 1985-03-29 | Cleaning/disinfecting system & process |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB8508289D0 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5993562A (en) * | 1996-08-13 | 1999-11-30 | Ppg Industries Ohio, Inc. | Method, composition, and kit for abrasive cleaning of fluid delivery systems |
| FR2830169A1 (en) * | 2001-09-28 | 2003-04-04 | Dominique Mercier | Bactericidal composition useful for treating drinking water and disinfecting water mains comprises sodium or calcium hypochlorite and a phosphate |
| WO2007048941A2 (en) * | 2005-10-27 | 2007-05-03 | Dominique Mercier | Method of using an additive for water chlorinated with javelle water |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455611A (en) * | 1934-04-19 | 1936-10-19 | Albright & Wilson | Improvements in or relating to bleaching and germicidal compositions and processes of using the same |
| GB550020A (en) * | 1941-06-16 | 1942-12-18 | Unilever Ltd | Improved cleansing composition |
| GB581946A (en) * | 1943-03-19 | 1946-10-30 | Mathieson Alkali Works | Improvements in cleansing, sterilizing and similar operations |
| GB608923A (en) * | 1945-05-24 | 1948-09-22 | Mathieson Alkali Works | Stable solid compositions for use in preparing cleansing and disinfecting solutions |
| GB1126108A (en) * | 1965-07-02 | 1968-09-05 | Olin Mathieson | Deoderizing tablet and method |
| GB1160557A (en) * | 1965-09-01 | 1969-08-06 | Diversey U K Ltd | Improvements in and relating to Hypochlorite Compositions |
-
1985
- 1985-03-29 GB GB858508289A patent/GB8508289D0/en active Pending
-
1986
- 1986-03-27 GB GB08607825A patent/GB2173102A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455611A (en) * | 1934-04-19 | 1936-10-19 | Albright & Wilson | Improvements in or relating to bleaching and germicidal compositions and processes of using the same |
| GB550020A (en) * | 1941-06-16 | 1942-12-18 | Unilever Ltd | Improved cleansing composition |
| GB581946A (en) * | 1943-03-19 | 1946-10-30 | Mathieson Alkali Works | Improvements in cleansing, sterilizing and similar operations |
| GB608923A (en) * | 1945-05-24 | 1948-09-22 | Mathieson Alkali Works | Stable solid compositions for use in preparing cleansing and disinfecting solutions |
| GB1126108A (en) * | 1965-07-02 | 1968-09-05 | Olin Mathieson | Deoderizing tablet and method |
| GB1160557A (en) * | 1965-09-01 | 1969-08-06 | Diversey U K Ltd | Improvements in and relating to Hypochlorite Compositions |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5993562A (en) * | 1996-08-13 | 1999-11-30 | Ppg Industries Ohio, Inc. | Method, composition, and kit for abrasive cleaning of fluid delivery systems |
| FR2830169A1 (en) * | 2001-09-28 | 2003-04-04 | Dominique Mercier | Bactericidal composition useful for treating drinking water and disinfecting water mains comprises sodium or calcium hypochlorite and a phosphate |
| WO2007048941A2 (en) * | 2005-10-27 | 2007-05-03 | Dominique Mercier | Method of using an additive for water chlorinated with javelle water |
| WO2007048941A3 (en) * | 2005-10-27 | 2007-11-01 | Dominique Mercier | Method of using an additive for water chlorinated with javelle water |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8508289D0 (en) | 1985-05-09 |
| GB8607825D0 (en) | 1986-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |