2-Phenylbenzimidazole-5-sulfonic acid
Chemical Structural Formula:
Video:
Specifications:
| Testing Items | Specifications | Testing Methods |
| Appearance | White to off-white powder | Visual |
| Identification(UV) | Conforms | UV USP<197U> |
| Identification(IR) | Conforms | UV USP<197K> |
| Assay(Loss on Drying) | 98.0% ~ 102.0% | USP Monograph: Ensulizole |
| UV Specific Extinction (E1%, 1cm at 302±2nm) | 920 ~ 1000 | Spectrophotometric |
| Loss on Drying | Not more than 2.0% | USP Monograph: Ensulizole |
Features and Uses:
2-Phenylbenzimidazole-5-sulfonic acid(UV-T) is a high-efficiency UVB absorber, with an ultraviolet absorption rate of at least 920 at about 302nm, and can also absorb a small part of the UVA band. It belongs to water-soluble chemical sunscreens. It is often used in combination with other ingredients such as avobenzone, titanium dioxide, zinc oxide, or tinosorb. Its protective power and quality of protection do not gradually decrease over time when exposed to sunlight, thus somewhat mitigating the breakdown of other UVB blockers in sunscreens. The non-greasy texture also converts ingested UV radiation into less harmful infrared radiation and heat.
Packaging:
1kg/Aluminum Foil Bag, 5kg/Carton, 10kg/Carton, 20kg/Carton, 25kg/Carton or according to the specific requirements from customers.
Storage Conditions:
Preserved in unopened original containers in a cool dry place before using; kept away from direct sunlight, heat and moisture.
Shelf Life:
24 Months if stored under above mentioned conditions.
