中铬黄400# 中铬黄103#

中铬黄

又称颜料黄34。主要成分为铬酸铅的颜料，其化学组成为pbcro4，含量约为90％～94％，外观为浅红黄色粉末，为单斜晶形，密度为5.1～6.0g/cm3，吸油量为13～27g/100g，抗色渗性极好，遮盖力居于浅铬黄和深铬黄之间，明度与浅铬黄相等，优于深铬黄，耐酸性与浅铬黄相等，优于深铬黄，耐碱性差，分散性好。

　　中铬黄是以硝酸盐如硝酸铅、铬酸盐如重铬酸钠为原料，严格控制各种反应条件形成稳定的单斜晶形中铬黄粒子，经过滤、干燥、粉碎而成。主要用于涂料，尤其是路标涂料、油墨和塑料等。

　　物化性质(physical properties)   

1、色光（与标准样品比）：近似~微；2、铬酸铅含量：≥90.0%；3、水溶物含量：≤1.0%；4、水萃取液ph值：5.0-8.0；5、水分含量：≤1.0%；6、遮盖力g/m2≤55；7、着色力（与标准样品比）：≥95%；8、吸油量：≤22%；9、筛余物（320目）≤0.5%  

产品理化性质：粉状物质，无臭无气，难溶于水，难溶于丙酮，难溶于乙醇，不溶于碱，熔点≥300℃，无爆炸危险性，无毒、无放射性，非易燃，非腐蚀性。中铬黄颜料是一种色彩鲜艳的黄色颜料，并具有遮盖力强、着色力高、耐热，易研磨分散等优点。

广泛用于油漆、油墨、橡胶、塑料、文教等

product characteristics and uses

the chrome yellow

also known as pigment yellow 34. main ingredients for lead chromate pigments, its chemical composition is pbcro4, content is about 90% ~ 90%, appearance is pale red yellow powder, to monoclinic crystal shape, density of 5.1 ~ 6.0 g/cm3, oil absorption is 13 ~ 27 g / 100 g, excellent color and permeability resistance, hiding power in light chrome yellow and dark chrome yellow, lightness and equal light chrome yellow, better than the dark chrome yellow, acid resistance and equal light chrome yellow, better than the dark chrome yellow, alkali resistance is poor, good dispersibility.

in chrome yellow in nitrate, lead nitrate, chromium acid salts such as sodium dichromate as raw materials, strict control of various reaction conditions to form stable monoclinic crystal shape of chrome yellow particles, the filtration, drying and crushing. is mainly used in coating, especially road signs of paint, ink and plastic, etc.

physical and chemical properties, physical properties)

1, color (than) with standard sample: approximate ~ micro; 2 lead, chromium acid: 90.0% or higher; 3, water soluble content: 1.0% or less; 4, water extracted liquid ph value: 5.0-8.0; 5, moisture content: 1.0% or less; 6, covering power, 55 g/m2 or less; 7, tinting strength, than with standard sample: 95% or higher; 8, oil absorption: 22% or less; 9, screenings (320 mesh) of 0.5% or less

product physical and chemical properties: powdery substance, odourless airless, poorly soluble in water, soluble in acetone, soluble in ethanol, not soluble in alkali, melting point 300 ℃ or higher, no explosion danger, non-toxic, non-radioactive, nonflammable, non corrosive. in chrome yellow pigment is a kind of bright yellow pigment, and has strong hiding power, high tinting strength, heat resistance, easy grinding dispersion, etc.

widely used in paint, printing ink, rubber, plastic, culture and education, etc

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