Phenylbenzimidazole Sulfonic Acid


Phenylbenzimidazole Sulfonic Acid


  1. Basic Information
Product name Phenylbenzimidazole Sulfonic Acid
Chemical name 2-Phenyl-5-Benzimidazolesulfonic Acid
CAS No. 27503-81-7
EINECS No. 248‐502‐0
Molecular Formula: C13H10N2O3S
Molecular Weight: 274.30
Structural Formula:  


  1. Technical Specification
Item        Specification
Appearance Colorless or off-white powder
Assay 98.0-102.0%
Loss on drying 2.0 Max
Specific extinction (E1%, 1cm at 302+2nm) 920-1000


  1. Application field

Phenylbenzimidazole Sulfonic Acid is a type of UVB sunscreen that also absorbs a small fraction of UVA wavelengths. It is a water-soluble chemical sunscreen. It is often used in combination with other ingredients, such as avobenzone, titanium dioxide, zinc oxide, or celadin. Its protection and quality from sunlight does not decrease over time, so it can somewhat mitigate the breakdown of other UVB isolators in sunscreen.

Phenylbenzimidazole Sulfonic Acid also can convert ingested ultraviolet radiation into less harmful infrared radiation and heat. The texture is clean and not greasy. This product has good storage and transportation stability, It is non-flammable and non-explosive, non-toxic and harmless.


  1. Packing

25kg per drum

Other package sizes are available upon request.


  1. Storage

Store in a well-ventilated, cool, dry area, out of direct sunlight. Keep containers tightly closed when not in use.


  1. Period of validity

24 months