... .white powder solid state 2.mainly used in cell, active carbon, flux, paper-making industry 3.I 75% 25% II 55% 45 ... .Usage: The products are mainly used in cell, active carbon, flux, paper-making industry etc, it is also used in synthesize organically ... , preservatives of wood etc. Package: The outside is iron pail, paper pail or plaited bag covered plastic film. The inside is ...