molecular formula: NH4Br molecular weight: 97.94 CAS NO: 12124-97-9 Usage: Ammonium Bromide is used in the preparation of photographic emulsions and developers, in pharmaceutical preparations, as a wood preservative, forwater treatment and as a flame retardant additive. Specifications: Industrial grade Medical grade photo grade Appearance white powder or crystal white powder or crystal white powder or crystal Content 98.0% min 99% min 99.5% min Loss on drying 1% max 0.5% max 0.3% max Chloride d3.0% 0.5% max 0.2% max PH 5.5-8.5 5.5-8.5 5.5-8.5 packing: PP woven bag of 25kg net each inner lined with PE bag. if you interested in my products, please contact: wht@ kaihongchem.com