Ensulizole, also known as 2-phenylbenzimidazole-5-sulfonic acid, is a water-soluble sunscreen agent that absorbs strongly at UV-B wavelengths. It is commonly found in cosmetic products and sunscreen formulas in combination with other UV filter compounds due to its minimal protection against UV-A wavelengths.
Ensulizole and 2-Phenyl-1H-benzimidazole-5-sulphonic acid
white crystalline powder
mp. >300 °C (lit.)
Solubility in Water
Because phenylbenzimidazole sulfonic acid is water-soluble
Phenylbenzimidazole Sulfonic Acid is an organic compound used in sunscreens and other cosmetic and beauty products with a sunscreen or SPF component because of its ability to block UVB rays