C.I. Acid Orange 20
Synonyms
Acid Orange 20;
C.I. 14600;
CI 14600;
Benzenesulfonic acid, 4-(2-(4-hydroxy-1-naphthalenyl)diazenyl)-, sodium salt (1:1);
Sodium 4-((4-hydroxy-1-naphthyl)azo)benzenesulphonate;
Category
Zwitterionic Surfactant
> Sulfonate Type
>> Azo Dye
Chemical Numbering System
CAS: 523-44-4
EINECS: 208-346-6
Molecular Formula & Molecular Weight
Molecular Formula: C16H11N2NaO4S; C16H12N2O4S.Na
Molecular Weight: 350.32
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 and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
rat intraperitoneal LD50 |
1000mg/kg[1] |
Overall carcinogenic evaluation: Group 3[1].
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.
Major Uses
1, Typical Applications
Use as dye.
Manufacturers
References
[1]: ChemIDplus. 523-44-4, C.I. Acid Orange 20
Update: 20171208(1);