Acetylene |
Synonyms & Trade Names Ethine, Ethyne [Note: A compressed gas used in the welding & cutting of metals.] |
CAS No. 74-86-2 |
RTECS No. AO9600000 |
DOT ID & Guide 1001 116 |
FormulaHC?CH |
Conversion 1 ppm = 1.06 mg/m3 |
IDLH N.D.
See: IDLH INDEX |
Exposure Limits NIOSH REL: C 2500 ppm (2662 mg/m3)
OSHA PEL: none |
Measurement Methods
NIOSH Acetylene Crit. Doc.
See: NMAM or OSHA Methods |
Physical Description Colorless gas with a faint, ethereal odor. [Note: Commercial grade has a garlic-like odor. Shipped under pressure dissolved in acetone.] |
MW: 26.0 |
BP: Sublimes |
FRZ: -119°F (Sublimes) |
Sol: 2% |
VP: 44.2 atm |
IP: 11.40 eV |
|
Fl.P: NA (Gas) |
UEL: 100% |
LEL: 2.5% |
RGasD: 0.91 |
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| Flammable Gas |
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).] |
Exposure Routes inhalation, skin and/or eye contact (liquid) |
Symptoms headache, dizziness; asphyxia; liquid: frostbite |
Target Organs central nervous system, respiratory system |
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Personal Protection/Sanitation (See protection codes)
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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Respirator Recommendations Not available.
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0089
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