Potassium Bromide AR

POTASSIUM  BROMIDE  –  Physical & Chemical Properties
CASR No. [  7758 – 02 – 3   ]
EC-No. 231-830-3
HS-No. 2827 51 00
RTECS TS7650000
Poison class ( CH ) 3
LD 50 oral rat 3070 mg / kg
Merck-Index 10, 7491
Mol.  Formula KBr
Mol. Weight 119.01
Specific Density, 20 0C 2.75 g / cm3
Bulk Density ~ 900 – 1000 kg / m3
Melting Point 730 0C
Boiling Point 1380  0C
Vapour Pressure, 795 0C 1.3 hPa
Solubility in H2O,20 0C 54 g per 100 ml
pH value ( 50g/l, H2O, 20 0C ) 5.5 – 8.5
Atmospheric Susceptibility Hygroscopic, decomposes

 

Relevant Risk, Safety & Disposal Aspects
Risk R 36/37/38 Irritating to eyes, respiratory system and skin
Safety S 26 – 36 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.  Wear suitable protective clothing.
Disposal D 14 Neutral solution is prepared prior to disposal.

 

Application, Storage & Packing
Application In laboratories as reagent, as a chemical intermediate, in manufacture of photographic chemicals.
Storage Store in a well closed tight container away from moisture.
Packing In 25 kg  with double polythene bags inside HDPE Drum.

 

POTASSIUM  BROMIDE  – LR
Description White fine crystalline powder
Assay  ( argentometric, dry basis  ) min. 99.5%
pH ( 5% w/v in water ) 5.0 – 8.0

 

Maximum Limits of Impurities
Water-insoluble matter 0.005 %
Sulphated  ash 0.05 %
Loss on drying ( 110 0C, 2 hours ) 0.5 %
Bromate ( BrO3 ) 0.0005 %
Chloride ( Cl ) 0.2 %
Total Nitrogen ( N) 0.001 %
Sulphate ( SO4 ) 0.005 %
Arsenic ( As ) 0.0001 %
Calcium group & Magnesium ( as Ca ) 0.001 %
Copper ( Cu ) 0.0002 %
Iron ( Fe ) 0.0003 %
Heavy metals ( as Pb ) 0.0005 %
Sodium ( Na ) 0.05 %