Kōkuhi: Ke keʻokeʻo crystalline ʻokoʻa
Aliʻi Paʻi: 98-102%
Loss on drying: 2.0% max
Melting point:300 Centigrade degree
Identfication: A Infrared Absorption 197K
B UV absorption 197U
Phenyl Benzimidazole Sulphonic Acid is a common sunscreen agent. It has been approved by the US FDA to be used on suncreen
labels in the United States.It is primarily a UVB protecting agent providing only minimal UVA protection.For better UV A protection, it
must be paired with Avobenzone etc. Because of Pheylbenzimidazole sulphonic acid is water soluable, it has the characteristic of feeling
ligter on skin. As such, it is often used in sunscreen lotions or moisturizers whose aesthetic goal is a non-greasy finish.The free acid is
poorly soluble in water, so it is used as its soluble salts.