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Hydrochloric acid Structure

Hydrochloric acid

Chemical Properties

Melting point -35 °C
Boiling point >100 °C (lit.)
Density  1.2 g/mL at 25 °C (lit.)
vapor density  1.3 (vs air)
vapor pressure  613 psi ( 21.1 °C)
Flash point 10℃ (tag closed test)
refractive index  1.3535
storage temp.  Store at +2°C to +25°C.
solubility  H2O: soluble
form  liquid
pka -7(at 25℃)
color  Light Yellow
Specific Gravity 1.19
Odor Sharp, irritating odor detectable at 0.25 to 10 ppm
PH 3.01(1 mM solution);2.04(10 mM solution);1.08(100 mM solution);
Water Solubility  miscible
Sensitive  Air & Light Sensitive
Merck  14,4780
Exposure limits Ceiling limit 5 ppm (~ 7 mg/m3).
Dielectric constant 4.6(20℃)
Stability Stable. Incompatible with alkalies, most metals. Avoid contact with water.
CAS DataBase Reference 7647-01-0(CAS DataBase Reference)
NIST Chemistry Reference Hydrogen chloride(7647-01-0)
IARC 3 (Vol. 54) 1992
EPA Substance Registry System Hydrochloric acid (7647-01-0)

Safety Information

Hazard Codes  T,C,F,Xi,F+,Xn
Risk Statements  36/37/38-37-34-35-23-20-11-67-66-22-19-12-10-40-20/22-39/23/24/25-23/24/25-41-37/38
Safety Statements  26-45-36/37/39-9-33-29-16-46-36/37-39
RIDADR  UN 2924 3/PG 2
OEL Ceiling: 5 ppm (7 mg/m3)
WGK Germany  2
RTECS  MW4025000
HS Code  2806 10 00
DOT Classification 2.3, Hazard Zone C (Gas poisonous by inhalation)
HazardClass  3
PackingGroup  I
Hazardous Substances Data 7647-01-0(Hazardous Substances Data)
Toxicity LC50 (30 min) in mice, rats: 2142, 5666 ppm (Darmer)
IDLA 50 ppm


Usage And Synthesis

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