Potassium bromide ,Hydrogen bromide ,Sodium bromide
Potassium bromide, chemical KBr, relative molecular weight: 119. A colorless or white crystalline powder, has a strong color of yellow salty, see. Moisture absorption. 1g dissolved in 1.5ml water, and the water solution was neutral. Relative density (d254) 2.75. Melting point 730. Boiling point 1435. Have stimulus. Mainly used for spectral analysis, drop analysis determination of copper and silver, indium, cadmium and arsenic polarographic analysis. Developer.
Hydrogen bromide, alias hydrobromic acid molecular formula is HBr, molecular weight of 80.91, he is making the basic raw materials of various inorganic bromides and some alkyl bromides.
Sodium bromide white crystal or powder. Salty or bitter microstrip. From the air to absorb moisture caking but not deliquescence. At high temperature, it was slightly volatile. 1g soluble in 1.1ml water, about 16ml ethanol, 6ml methanol. Its aqueous solution is nearly neutral, and pH is from 6.5 to 8. Relative density 3.21. Melting point 755. Low toxicity, half lethal dose (rat, via mouth) 3500mg/kg. Have stimulus. For the determination of Trace Cadmium bromide, manufacturing, inorganic and organic synthesis, photoengraving, pharmaceutical.