Food Red 17
Time: 2022-06-30 21:40:18; Reading: 0

Food Red 17


CI 16035;

Curry red;

Red 40;

2-Naphthalenesulfonic acid, 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfophenyl)azo)-, disodium salt;


Zwitterionic Surfactant

> Sulfonate Type

>> Azo Dye

Chemical Numbering System

CASRN: 25956-17-6

EINECS: 247-368-0

Molecular Formula & Molecular Weight

Molecular Formula: C18H14N2Na2O8S2; C18H16N2O8S2.2Na

Molecular Weight: 496.42



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.9) label:  

Animal Toxicity

Table 1 Animal toxicity values

dog oral LD50

> 5000mg/kg[1]

rabbit skin LD50

> 10000mg/kg[1]

rat oral LD50

> 10000mg/kg[1]

Ecology    may be hazardous to environment. Water body should be given special attention.

Biodegradability    biodegradable.

Characteristics    excellent masking, dyeing abilities.



Quality Standards & Test Methods

1, Physical and chemical indexes


Physical and chemical indexes


Actives, %, ≥


Test Methods

(1), Actives

GB/T 13173 Surface active agents -- Detergents -- Testing methods

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, according to local regulations and standards.

Major Uses

1, Typical Applications

Use as dye.

2, Personal care products

Colorant in personal care products.

Hair dyeing agent 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.

In the raw materials, the limited substances are as follows:

6-Hydroxy-2-naphthalene sulfonic acid, sodium salt: <= 0.3%;

4-Amino-5-methoxy-2-methylbenezene sulfonic acid: <= 0.2%;

6,6'-Oxydi(2-naphthalene sulfonic acid)disodium salt: <= 1.0%;

Unsulfonated aromatic primary amine (as aniline): <= 0.01%.

(2), In accordance with EU regulations (EC) 2009/1223, directive 88/667/EEC, be included in Annex IV/32.

(3), In accordance with EU regulations (EC) 2013/344, be included in Annex III/191.

Can be applied to:

Non-oxidative hair dye products: Maximum concentration is 0.4%.




[1]: ChemIDplus. 25956-17-6, C.I. Food Red 17