Phenylbenzimidazole sulfonic acid
Synonyms
1H-Benzimidazole-5-sulfonic acid, 2-phenyl-;
Ensulizole;
Category
Zwitterionic Surfactant
> Sulfonate Type
>> Aza-aryl Sulfonate
Chemical Numbering System
CAS: 27503-81-7
EINECS: 248-502-0
Molecular Formula & Molecular Weight
Molecular Formula: C13H10N2O3S
Molecular Weight: 274.30
Structure
Properties
Appearance (1), white to off-white solid.
Solubility slightly 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 label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent antistatic, dispersing, UV absorbing abilities. UVB band.
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, 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 antistatic agent.
Use as UV absorbing agent.
2, Personal care products
UV absorbing 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 UV filters. Maximum concentration is 8% (as acid).
(2), In accordance with EU regulations (EC) No 1223/2009, directive 83/574/EEC, be included in Annex VI/6. Maximum concentration is 8% (as acid).
Manufacturers
Update: 20190721(1);