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Acetylene |
CAS 74-86-2 | ||
C2H2 |
RTECS AO9600000 | ||
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Synonyms & Trade Names Ethine, Ethyne [Note: A compressed gas used in the welding & cutting of metals.] |
DOT ID & Guide 1001 116 |
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Exposure
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NIOSH REL: C 2500 ppm (2662 mg/m3) | ||
| OSHA PEL: none | |||
| IDLH N.D. See: IDLH INDEX | Conversion 1 ppm = 1.06 mg/m3 | ||
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Physical Description Colorless gas with a faint, ethereal odor. [Note: Commercial grade has a garlic-like odor. Shipped under pressure dissolved in acetone.] |
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MW: 26.0 |
BP: Sublimes |
FRZ: -119°F (Sublimes) |
Sol: 2% |
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VP: 44.2 atm |
IP: 11.40 eV |
RGasD: 0.91 |
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Fl.P: NA (Gas) |
UEL: 100% |
LEL: 2.5% |
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| Flammable Gas | |||
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Incompatibilities & Reactivities Zinc; oxygen & other oxidizing agents such as halogens [Note: Forms explosive acetylide compounds with copper, mercury, silver & brasses (containing more than 66% copper).] |
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Measurement Methods NIOSH Acetylene Crit. Doc. See: NMAM or OSHA Methods |
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Personal Protection & Sanitation (See protection) Skin: Frostbite Eyes: Frostbite Wash skin: No recommendation Remove: When wet (flammable) Change: No recommendation Provide: Frostbite wash |
First Aid (See procedures) Eye: Frostbite Skin: Frostbite Breathing: Fresh air |
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Important additional information about respirator selection Respirator Recommendations Not available. |
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| Exposure Routes inhalation, skin and/or eye contact (liquid) | |
| Symptoms Headache, dizziness; asphyxia; liquid: frostbite | |
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Target Organs
central nervous system, respiratory system |
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| See also: INTRODUCTION See ICSC CARD: 0089 |