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Ammonium chloride  Structure

Ammonium chloride

Chemical Properties

Melting point 340 °C (subl.) (lit.)
Boiling point 100 °C750 mm Hg
Density  1.52
vapor density  1.9 (vs air)
vapor pressure  1 mm Hg ( 160.4 °C)
refractive index  1.642
FEMA  4494 | AMMONIA (ALSO INCLUDES AMMONIUM CHLORIDE)
storage temp.  Store at +5°C to +30°C.
solubility  H2O: 1 M at 20 °C, clear, colorless
pka 9.25[at 20 ℃]
form  Solid
color  White
Specific Gravity 1.53
PH 4.7 (200g/l, H2O, 25℃)(External MSDS)
Water Solubility  soluble
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: ≤0.021
λ: 280 nm Amax: ≤0.019
Merck  14,509
BRN  4371014
Exposure limits ACGIH: TWA 10 mg/m3; STEL 20 mg/m3
NIOSH: TWA 10 mg/m3; STEL 20 mg/m3
Stability Stable. Incompatible with strong acids, strong bases.
CAS DataBase Reference 12125-02-9(CAS DataBase Reference)
FDA 21 CFR 184.1138; 310.545
Substances Added to Food (formerly EAFUS) AMMONIUM CHLORIDE
SCOGS (Select Committee on GRAS Substances) Ammonium chloride
EWG's Food Scores 2
FDA UNII 01Q9PC255D
ATC code B05XA04,G04BA01
NIST Chemistry Reference Ammonium chloride(12125-02-9)
EPA Substance Registry System Ammonium chloride (12125-02-9)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H302-H319
Precautionary statements P264-P270-P280-P301+P312-P305+P351+P338-P337+P313
Hazard Codes  Xn
Risk Statements  22-36-41-37/38
Safety Statements  22-36-26
RIDADR  UN 3077 9 / PGIII
WGK Germany  1
RTECS  BP4550000
Autoignition Temperature >400 °C
TSCA  Yes
HazardClass  9
PackingGroup  III
HS Code  28271000
Hazardous Substances Data 12125-02-9(Hazardous Substances Data)
Toxicity LD50 in rats (mg/kg): 30 i.m. (Boyd, Seymour); LD50 in rats (mg/kg): 1650 orally (Smeets)
NFPA 704:
0
2 0

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