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ACETALDEHYDE†
| CAS # | 75-07-0 |
|---|---|
| Formula |
C₂H₄O |
| Synonyms |
acetic aldehyde; ethanal; ethyl aldehyde |
| Physical description | Colorless liquid or gas (above 69°F) with a pungent, fruity odor. | ||
|---|---|---|---|
| Boiling point | 69°F | Molecular weight | 44.1 |
| Freezing point/melting point | -190°F | Vapor pressure | 740 mmHg |
| Flash point | -36°F | Vapor density | 1.52 |
| Specific gravity | 0.79 | Ionization potential | 10.22 eV |
| Lower explosive limit (LEL) | 4.0% | Upper explosive limit (UEL) | 60% |
| 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.) | 0010 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | XAD-2 tube (450/225 mg) coated with 10% 2-(hydroxymethyl)piperidine [SKC 226-27] |
| Sampling time* | 60 min |
| Sampling volume (TWA)* | 3 L |
| Sampling flow rate (TWA)* | 0.05 L/min |
| Sampling volume (STEL/Peak/C)* | 0.75 L |
| Sampling flow rate (STEL/Peak/C)* | 0.05 L/min |
| Analytical method instruments | GC-NPD |
| Method reference | OSHA 68 (fully validated) |
| 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 tube |
|---|---|---|---|
| Model/Type | Dräger - Acetaldehyde 100/a, 6726665 | Matheson-Kitagawa 8014-133SB | Gastec 92 |
|
Sampling information (see manufacturer instructions) |
20 strokes, approx 10-1000 ppm range, uncertainty 25% | follow mfr instructions, 1-140 ppm range | 1-4 strokes, 2-750 ppm range, uncertainty 16.4% for 10 to 100 ppm, 8.2% for 100 to 300 ppm |
|
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 |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA |
200 ppm (360 mg/m³) |
REL-TWA | TLV-TWA | PEL-TWA | |||
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C |
25 ppm (45 mg/m³) |
|||
| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
| Notes: |
Notes:
CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION (LOQ 18 ppm). See Appendix A and Appendix C - Supplementary |
Notes:
Visit the ACGIH TLV site for specific data |
Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
2000 ppm |
|||||
| Carcinogenic classifications: TLV-A2, IARC-2B, NIOSH-Ca, NTP-R, EPA-B2 |
Notes:
Ca |
||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
10 ppm/200 ppm/1000 ppm |
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Acetaldehyde NIOSH: Pocket Guide to Chemical Hazards - Acetaldehyde Literature References
|
Last Updated Date : 03/28/2024