Hydrogen Chloride
HCl

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General Characteristics Health Hazards Material Recommendations
A colorless, nonflammable and liquefied gas with a penetrating odor. Fumes in moist air. Corrosive in presence of moisture. A Toxic Product, Attacks the mucous membranes. Causes lung damage. Dry Gas: Stainless Steel, mild steel. Moiture presence: silver, platinum and tantalum.
TLV-TWA Flammable Limits DOT Class / Label
5 ppm Nonflammable 2.3 / Poison Gas
Molecular Weight Specific Gravity Specific Volume
36.5 1.268 @ 68° F 10.6 cu.ft./lb @ 70° F
CGA Valve Outlet CAS Registry No. UN Number
330 7647-01-0 1050
National Stock Number (NSN) Applicable to Hydrogen Chloride MIL Specs/ Fed Specs
MSDS for Hydrogen Chloride


Grade
Part #
Purity Minimum Cylinder
Size
Volume
LBS
Pressure
@ 70 F
Comments
Research
470600
99.999% Min.
450
044
007
600
55
8
613
613
613

None

Electronic
403000
99.995% Min.
450
044
007
600
55
8
613
613
613
Commercial
403100
99.0% Min. 450
044
007
600
60
8
613
613
613

Uses: Hydrogen chloride has many uses among which are the following: as a chemical inter-mediate; in the hydrochlorination of rubber; as a babbitting flux; in the production of vinyl and alkyl chlorides; in the separation of cotton from wool; in the delinting of cotton. Electronic grade is used for etching semiconductor crystals.