Silver Bromide

Name:
Silver Bromide
Detailed information:

M Formula:	AgBr
Properties:
Pale yellow crystals or powder, darkens on exposure to light, finally turning black. D 6.473 (25C), mp 432C, bp decomposes at 700C. Soluble in potassium bromide, potassium cyanide, and sodium thiosulfate solutions; very slightly soluble in ammonia water; insoluble in water.
Derivation:
Silver nitrate is dissolved in water and a solution of alkali bromide added slowly. The precipitated silver bromide is washed repeatedly with hot water; the operation must be carried on in a darkroom under a ruby-red light.
Use:
Photographic film and plates, photochromic glass, laboratory reagent.