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Chemical Reagent：Ammonium iodide
Molecular Formula：NH4I
Molecular Weight：144.94
Appearance and Properties：A white，odorless，salty，deliquescent crystal or crystalline powder，dissolves in water，methyl alcohol，ethyl alcohol and glycerol，sets free iodine and goes yellow when exposed to air and/or light，decomposes and partly sublimes when heated（sublime point 551℃）。
Use：Used as an analytical reagent，to prepare iodide，and in photograving.
Packing：100g，500g，25kg，50kg。
Standard：Q/YSH 05-2000
|
SPECIFICATION |
VALUE |
|
|
AR |
CP |
|
|
Assay % |
≥ 99.0 |
≥ 98.0 |
|
Reaction in water solation |
meet standard |
meet standard |
|
Clarity |
meet standard |
meet standard |
|
Water-insoluble substances% |
≤ 0.005 |
≤ 0.01 |
|
Ignition residue % |
≤ 0.005 |
≤ 0.02 |
|
Chloride （ Cl ） % |
≤ 0.01 |
≤ 0.02 |
|
Iodate and iodine （ as IO3 ） % |
≤ 0.003 |
≤ 0.01 |
|
Iron （ Fe ） % |
≤ 0.0001 |
≤ 0.0003 |
