L Cysteine BP is accessible in 99% pure form. Available in powder form, this substance is offered in food grade version. Its crystalline powder form is sweet in taste. It readily dissolves in water. It slightly dilutes in ethanol and methanol. It does not dissolve in ether and acetone. Melting point of L Cysteine BP is 180 degree C. Its water soluble form is colorless. Food grade version of this substance is used to formulate nutritional supplement, flour improver and antioxidants.