ETHYLENE
| CAS # | 74-85-1 |
|---|---|
| Formula |
C₂H₄ |
| Synonyms |
ethene; acetene |
| Physical description | Colorless gas with a sweet odor. | ||
|---|---|---|---|
| Boiling point | -154.7°F | Molecular weight | 28.05 |
| Freezing point/melting point | -272.4°F | Vapor pressure | |
| Flash point | -213°F (approx) | Vapor density | |
| Specific gravity | 0.569 at -154.84°F | Ionization potential | |
| Lower explosive limit (LEL) | 2.75% | Upper explosive limit (UEL) | 28.6% |
| NFPA health rating | 2 | NFPA fire rating | 4 |
| NFPA reactivity rating | 2 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | |||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | |||
| Sampling time* | |||
| Sampling volume (TWA)* | |||
| Sampling flow rate (TWA)* | |||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | |||
| Method reference | |||
| Notes | |||
| Special requirements |
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Sampler/Sampling media | |
|---|---|
| Bulk Method |
| Device | Detector tube | Detector tube | Detector tubes | Detector tube | Detector tube |
|---|---|---|---|---|---|
| Model/Type | Dräger - Ethylene 0.1/a, 8101331 | Dräger - Ethylene 50/a, 6728051 | Gastec 172L, 172, 171 | Matheson-Kitagawa 8014-108SA | Matheson-Kitagawa 8014-280S |
|
Sampling information (see manufacturer instructions) |
20 strokes, approx 0.2-5 ppm range; uncertainty 49% | 3 strokes, approx 50-2500 ppm range, uncertainty 32% | 172L: 1 stroke, 5-800 ppm range, uncertainty 16% for 25-200 ppm, 8% for 200-800 ppm. 172: 1 stroke, 5-800 ppm range, uncertainty 16% for 25-200 ppm, 8% for 200-800 ppm. 171: 1 stroke, 0.1-2% range. 103: 0.5-2 strokes, 0.35-16.8% range | follow mfr instructions, approx 20-1200 ppm range | follow mfr instructions, approx 20-2000 ppm range |
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
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|---|---|---|---|---|---|---|---|
| PEL-TWA |
|
REL-TWA |
|
TLV-TWA |
200 ppm [2001] |
PEL-TWA |
|
| PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
|
PEL-STEL |
|
| PEL-C |
|
REL-C |
|
TLV-C |
|
PEL-C |
|
| Skin notation |
N |
Skin notation |
NA |
Skin notation |
N |
Skin notation |
N |
|
Notes:
Ethylene is classified as a simple asphyxiant and exposure is addressed in OSHA Construction and Maritime standards only. For OSHA's construction regulations, see 29 CFR 1926.55 Table 1: [E] The limiting factor is the available oxygen which shall be at least 19.5% and be within the requirements addressing explosion in 29 CFR 1926. For OSHA's maritime regulations, see 29 CFR 1915.1000 Table Z-Shipyards: [E] The limiting factor is the available oxygen which shall be at least 18% and be within the requirements addressing explosion in 29 CFR 1915, Subpart B. |
Notes:
Not established |
Notes:
|
Notes:
See footnote [h]: A number of gases and vapors, when present in high concentrations, act primarily as asphyxiants without other adverse effects. A concentration limit is not included for each material because the limiting factor is the available oxygen. (Several of these materials present fire or explosion hazards.) |
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| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: TLV-A4 |
Notes:
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Ethylene NIOSH: Pocket Guide to Chemical Hazards - Ethylene Literature References
|
Last Updated Date : 01/31/2018