Praxair Material Safety Data Sheet
1. Chemical Product and Company Identification
Chemical Formula: C2H2
Emergencies: * 1-800-363-0042
Praxair Canada Inc.
1 City Centre Drive
Mississauga, ON L5B 1M2
Product Name: Acetylene
Acetylen, Ethine, Ethyne, Narcylene
*Call emergency numbers 24 hours a day only for spills, leaks, fire, exposure, or accidents involving this
product. For routine information, contact your supplier or Praxair sales representative.
Metal industry: Welding and cutting
2. Hazards Identification
Flammable gas under pressure. Can form explosive mixtures with air. Fusible plugs in top,
bottom, or valve melt at 98 - 104 C. Do not discharge at pressures above 103 kPa. May cause
dizziness and drowsiness. Self-contained breathing apparatus may be required by rescue
workers. At normal temperature and pressure, commercial acetylene is a colourless gas with
a distinctive garlic-like odour.
THRESHOLD LIMIT VALUE: TLV-TWA Data from 2007 Guide to Occupational Exposure Values (ACGIH). TLV-TWAs
should be used as a guide in the control of health hazards and not as fine lines between safe and dangerous
ROUTES OF EXPOSURE:
EFFECTS OF A SINGLE (ACUTE) OVEREXPOSURE:
Asphyxiant. Effects are due to lack of oxygen. Moderate concentrations may cause
headaches, drowsiness, dizziness, excitation, excess salivation, vomiting, and
unconciousness. The vapour from a liquid (acetone) release may also cause incoordination
and abdominal pain. Lack of oxygen can kill.
No harm expected. Liquid (acetone) may cause frostbite.
An unlikely route of exposure, but frostbite of the lips and mouth may result from contact
with the liquid (acetone). If swallowed, the liquid may ca