C.I. Acid Red 18
Synonyms
Acid Red 18;
New coccine;
CI 16255;
1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-, trisodium salt;
Category
Zwitterionic Surfactant
> Sulfonate Type
>> Azo Dye
Chemical Numbering System
CAS: 2611-82-7
EINECS: 220-036-2
Molecular Formula & Molecular Weight
Molecular Formula: C20H11N2Na3O10S3; C20H14N2O10S3.3Na
Molecular Weight: 604.47
Structure
Properties
Appearance (1), solid.
Solubility soluble in water.
Stability stable.
Physical - chemical properties
|
Water solubility, g/L |
80 (Temperature not specified)[1] |
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 label: 
Animal Toxicity
Table 1 Animal toxicity values
|
mouse intraperitoneal LD50 |
1600mg/kg[2] |
|
mouse oral LDLo |
8000mg/kg[2] |
|
rat intraperitoneal LD50 |
600mg/kg[2] |
|
rat intravenous LD50 |
1000mg/kg[2] |
|
rat oral LD50 |
> 8000mg/kg[2] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent masking, dispersing abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
85.0 |
Test Methods
(1), Actives
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.
Major Uses
1, Typical Applications
Use as dye.
2, Personal care products
Dye, hair dyeing agent in personal care products.
* * * * * *
Further information:
(1), In accordance with EU regulations (EC) No 1223/2009, directive 88/667/EEC, be included in Annex IV/35.
In accordance with EU regulations (EC) No 344/2013, be included in Annex III/192, Can be used in non-oxidative hair dye products.
The Maximum concentration is 0.5%.
(2), In accordance with Safety and Technical Standards for Cosmetics (2015 Edition):
Can be used in personal care products.
In raw materials, other material limitations are as follows:
The total contents of 4-aminonaphthalene-1-sulfonic acid, 3-hydroxynaphthalene-2,7-disulfonic acid, 6-hydroxynaphthalene-2-sulfonic acid, 7-hydroxynaphthalene-1,3-disulfonic acid and 7-hydroxy naphthalene-1,3,6- trisulfonic acid are not more than 0.5%.
The content of unsulfonated aromatic primary amine is not more than 0.01% (as aniline).
Manufacturers
References
[1]: HSDB. 2611-82-7, C.I. Acid Red 18
[2]: ChemIDplus. 2611-82-7, C.I. Acid Red 18
Update: 20171208(1);