Photographic grade Crystal Potassium Bromide as medicine preparation KBR CHEMICAL FORMULA : KBr M.W.: 119.01 DESCRIPTION: white crystalline, or powder, density in 2。75(at 25℃),melting point on 734℃,boiling point on 1435℃, dissolved in water and glycerin, with hygroscopicity, pH in 7. APPLICATION: Be used as developer and thicker, sedative in medicine, also be used to preparation of special soap, carving and printing. CAS#：7758-02-3 SPEC Photographic grade ITEMS Twin Standard purity ％ ≥99.5％ Water insouluable ％ ≤0.002％ Chloride(Cl) ％ ≤0.2％ (BrO3) ％ ≤0.001％ Salts SO4 ％ ≤0.002％ Heavy Metal(Pb) ％ ≤0.0005％ Dry lossity weight ％ ≤0.2％ Middle Control Item White degree ％ 90％ Permeationrate 15％ 98％ Particle size (micron) 90％ overpass 100 Provide reference Produce technics Deoxidize Carbamide Packing 25KG/bag Remark：We may make special specification according to customer’s requirements.