硫酸铵

(NH4)2SO4 M.W.: 132.14 500g Characteristic: Fine white granules or crystals. Slight odor of ammonia. Specification: Assay [(NH4)2SO4]...................................≥99.0% pH (50g/l solution, 25)................................4.8 6.0 Clarity..................................................passes test Insoluble matter in water...........................≤0.002% Ignition residue (as sulfate).........................≤0.01% Chloride (Cl)...........................................≤0.0005% Nitrate (NO3)............................................≤0.001% Phosphate (PO4).....................................≤0.0005% Arsenic (As)..........................................≤0.00002% Calcium (Ca).............................................≤0.005% Iron (Fe)..................................................≤0.0002% Heavy metals (as Pb)...............................≤0.0005% Analytical reagent Causes irritation to skin, eyes and respiratory tract. May be harmful if swallowed. Avoid contact with eyes, skin and clothing. Wash thoroughly after handling. Avoid breathing dust. Keep container closed. UN CAS-No. 7783-20-2 We are one of the biggest manufacturer and exporter of chemical reagent( which means small packing, 500g/bottle, 500ml/bottle, 2500ml/bottle, etc. and high purity, just like MERCK, Sigma, etc.) in China. We have now added new production line engaged in distilling high purity reagents and HPLC reagent, such as acetonitrile, methanol, ethanol, Isopropyl alcohol, Ethyl Acetate,Butyl acetate, Cyclohexane,hexane, xylene, etc.