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2-Phenylbenzimidazole-5-sulfonic acid(PBSA)
Product Name:2-Phenylbenzimidazole-5-sulfonic acid
CAS:CAS:27503-81-7
Molecular formula:C13H10N2O3S
Molecular weight:274.3
Structural formula：
Melting point:>300 ° C (lit.)
Density: 1.3592 (roughestimate)
Refractive index: 1.6360 (estimate)
Storage conditions: 2-8 ° C
Solubility: Solubility in ethanol and water: (as sodium chemicalbook salt)
Acidity coefficient (pKa): -0.87 ± 0.40 (Predicted)
Form: Fine crystalline powder
Color: White
Water solubility: double
Stability: hygroscopicity
BRIEF DESCRIPTION
USE：Ensulizole (PBSA) is a water-soluble sunscreen ingredient, a sulfonated UV absorbent characterized by strong absorption of UVB and partial absorption of UVA. ChemicalbookEnsulizoles can damage DNA by generating reactive oxygen species (ROS) under UV or sunlight irradiation. Used as a UV absorber, mainly in cosmetics. Water soluble UV-B absorbent, added in the aqueous phase, can increase the SPF value.
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