农业年级的21%硫酸铵

Sulfate of Ammonium Molecular formula:(NH 4 ) 2 SO 4 Relative molecular weight:132.13 Property: White or off-white granule, easily soluble in water. Aqueous solution appears acid. Insoluble in alcohol, acetone and ammonia, Easily deliquescent in the air. Use: Used as materials for producing hydrogen peroxide, ammonia alum and ammonium chloride in chemical industry; flux in jointing industry; fireproof agent in textile industry; additive of plating bath in plating industry; nitrogenous in agricultural industry. Applicable to common soil and crops. Food-grade products are used as dough regulators and yeast nutrition. Specification:Index Name Index value Nitrogen(N) content(based on dry basis)21.0Water content(H 2 O)0.2Free acid(H 2 SO 4 )0.05Iron(Fe)0.007Arsenic(As)0.00005Heavy metal(based on Pb)0.005Insoluble substance in water0.05Packing: 25kg/50kg pp/pe bags