Biotin d-biotin vitamin H CAS 58-85-5 Appearance White Powder or Off-white Powder Purity: 2% food grade and 99% food grade and 2% feed grade Conforms to USP 31 /EP6 / USP 26 Packing size: 15kgs/AL TIN 25kgs/AL TIN 50kgs/AL TIN Usage: Biotin is a water soluble dicyclic monocarboxylic acid considered to be part of vitamin B complex. It plays a role in the metabolism of fatty acids and the domination of certain amino acids. If you are interested in our products, pls contact me by email of onicon88 (a) hotmail dot com or search us in google by keyword of onicon chemical.