Molecular formula: NH4F
Molecular weight:
37.04
Physical and chemical feature: It is acromatic, acicular and
transparent crystal with specific gravity of 1.315. It is deliquesces easily. It
can be dissolved in water, a bit dissolved in alcohol. It is not dissolved in
othyl carbinol and liquid ammonium. It decomposes into ammonium and fluoride in
hot water and decomposes into ammonium and hydrogen fluoride when being heated,
its aqueous solution takes acidic property. It may corrode glass and human skin
with toxicity.
| ITEM | UNIT | INDEX |
| NF Content | % >- | 98.0 |
| Free Alkali (Na2CO3) | % <- | 1.0 |
| Water Non-dissolving Substance | % <- | 0.5 |
| Moisture | % <- | 0.5 |
Usage: As hyalographic agent, it is used in glass
product processing. It can also be used as wood preservative, drop agent in
aralitical reagent and dye mordant of fabric. It is also used in refining rare
chemical elements.
Packing: plastic weaved bag 25kg each.