C.I. Acid Orange 7
Time: 2015-08-21 17:53:47
C.I. Acid Orange 7
Acid Orange 7;
C.I. 15510;
CI 15510;
Benzenesulfonic acid, 4-(2-(2-hydroxy-1-naphthalenyl)diazenyl)-, sodium salt (1:1);
Sodium 4-((2-hydroxy-1-naphthyl)azo)benzenesulphonate;
Anionic Surfactant
>> Sulfonate
>> Azo Sulfonate
>> Azo Dye
Chemical Numbering System
Molecular Formula & Molecular Weight
Molecular Formula: C16H11N2NaO4S; C16H12N2O4S.Na
Molecular Weight: 350.32
Appearance    (1), solid.
Solubility    soluble in water.
Stability    stable.
Risk    Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.6) label:  
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent masking, dispersing abilities.
Quality Standards & Test Methods
1. Physical and chemical indexes
Physical and chemical indexes
Actives, %, ≥
Test Methods
(1), Actives
2. Hazardous substances indexes
Hazardous substances indexes
Heavy metals (as Pb), mg/Kg, ≤
As, mg/Kg, ≤
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.
Major Uses
1. Typical Applications
Use as dye.
2. Personal care products
Hair dying agent, dye in personal care products.
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Further information:
(1), In accordance with EU regulations (EC) No 1223/2009, directive 88/667/EEC, be included in Annex IV/21.
Not to be used in eye products.
(2), In accordance with Safety and Technical Standards for Cosmetics (2015 Edition):
Not to be used in eye products.
In raw materials, other material limitations are as follows:
The content of 2-naphthol is not more than 0.4%.
The content of sulfanilic acid, sodium salt is not more than 0.2%.
The content of 4,4’-(diazoamino)-dibenzenesulfonic acid is not more than 0.1%.
Update: 20171208(1);