C.I. Acid Yellow 23
Synonyms
Acid Yellow 23;
Tartrazine;
C.I. 19140;
1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-(2-(4-sulfophenyl)diazenyl)-, sodium salt (1:3);
Category
Zwitterionic Surfactant
> Sulfonate Type
>> Azo Dye
Chemical Numbering System
CASRN: 1934-21-0
EINECS: 217-699-5
Molecular Formula & Molecular Weight
Molecular Formula: C16H9N4Na3O9S2; C16H12N4O9S2.3Na
Molecular Weight: 534.36
Structure
Properties
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, nitrogen oxides and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.10) label: 
Animal Toxicity
Table 1 Animal toxicity values
|
mouse oral LD50 |
12750mg/kg[1] |
|
rat intraperitoneal LD50 |
> 2000mg/kg[1] |
|
rat intravenous LD50 |
> 2000mg/kg[1] |
Reproductive effect[1].
Human Toxicity
Table 2 Human toxicity values
|
human oral TDLo |
0.014mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent masking, dyeing, antistatic abilities.
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, Product standards
(1), Chinese standards
(1a), GB 4481.1 Food additive -- Tartrazine
(1b), YY 0143 Pharmaceutical excipients -- Tartrazine
4, 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
Dye in personal care products.
3, Food
Use as food additive (coloring agent).
4, Medicine
Use as pharmaceutical excipient (coloring agent).
Manufacturers
References
[1]: ChemIDplus. 1934-21-0, Tartrazine
Update: 20190714(1);