Ammonium Hydrogenfluoride
MOLECULAR FOMULAR: NH4HF2
M.W.: 57.04
PROPERTY: White needle-like
crystal, easy deliquescence and agglomeration, soluble in
water and slight soluble in alcohol; decompose to ammonia
and ammonium bifluoride in heat water, decompose to ammonia
and hydrogen fluoride when being heated, its aqueous solution
is acidic and can corrode glass.
USES: It is used as etching
agent for engraved glass, antiseptic agent and disinfectant,
solvent in producing metal beryllium using beryllium oxide,
analytic reagent and surface treating agent of silicon steel
plate; also used as oxidant in producing ceramic and aluminum-magnesium
alloy, cleaning agent in steam generation system of boiler's
water supply system, fluorizating agent in organic synthesis,
reagent in extracting rare element from electroplating solution.
Quality Index:
| Item |
Excellent Grade |
First Grade |
Second Grade |
| NH3HF2, % ≥ |
98 |
96 |
95 |
| Sulfate(SO4), % ≤ |
0.05 |
0.08 |
0.1 |
| Fluorosilicate(SiF6), % ≤ |
2.0 |
2.5 |
3.0 |
| Ignition Residue %, ≤ |
0.15 |
0.18 |
0.2 |
Package: Plastic woven bag lined with high-pressure
polyethylene plastic bag, net weight: 25kg/bag.
|
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