There is good function of changing color of preventing the light and the heat from causing .Appearance : White powder

There is good function of changing color of preventing the light and the heat from causing .

Appearance : White powderAssay : 98%minAsh : 0.1%maxLight Transmittance : 425nm 95min   

                               500nm 97minVolatiles : 0. 5% max

High quality of antioxygen 1010