Pigment Red 4
Synonyms
1-((2-Chloro-4-nitrophenyl)azo)-2-naphthol;
CI 12085;
Category
Non-ionic surfactant
> Azo
Chemical Numbering System
CASRN: 2814-77-9
EINECS: 220-562-2
Molecular Formula & Molecular Weight
Molecular Formula: C16H10ClN3O3; C16H10Cl1N3O3
Molecular Weight: 327.72
Structure
Properties
Appearance (1), solid.
Solubility insoluble in water.
Stability stable.
Risk Solid form: irritation, irritation to skin, eye, respiratory system.
GHS (Rev.10) label:
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent dyeing, masking, dispersing, antistatic abilities. Azo dyes. Can cause dermatitis.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
Item |
Physical and chemical indexes |
Solid |
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
2, Hazardous substances indexes
Item |
Hazardous substances indexes |
Solid |
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
As, mg/kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents -- Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents -- Determination of total arsenic
3, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.
Major Uses
1, Typical applications
Use as dye.
2, Personal care products
Colorant in personal care products.
Further information:
(1), In accordance with Safety and Technical Standards for Cosmetics (2015 Edition) of China, be included in the allowable colorants.
Can be applied to all kind of products. Maximum concentration is 3%.
In raw materials, the content of 2-Chloro-4-nitrobenzenamine is not more than 0.3%, the content of 2-Naphthalenol is not more than 1%, the content of 2,4-Dinitrobenzenamine is not more than 0.02%, the content of 1-((2,4-Dinitrophenyl)azo)-2-naphthalenol is not more than 0.5%, the content of 4-((2-Chloro-4-nitrophenyl)azo)-1-naphthalenol is not more than 0.5%, the content of 1-((4-Nitrophenyl)azo)-2-naphthalenol is not more than 0.3%, the content of 1-((4-Chloro-2-nitrophenyl)azo)-2-naphthalenol is not more than 0.5%.
Prohibited to use in hair dyeing products.
(2), In accordance with EU regulations (EC) 2009/1223, directive 88/667/EEC, be included in Annex IV/9.
Maximum concentration is 3%.
(3), In accordance with EU regulations (EC) 2013/344, be included in Annex II/1345.
Prohibited to use in hair dyeing products.
Manufacturers