ACRYLIC ACID
| CAS # | 79-10-7 |
|---|---|
| Formula |
C₃H₄O₂ |
| Synonyms |
acroleic acid; acrylic acid, inhibited; aqueous acrylic acid (technical grade is 94%); ethylenecarboxylic acid; glacial acrylic acid (98% in aqueous solution); 2-propenoic acid |
| Physical description | Colorless liquid or solid (below 55°F) with a distinctive, acrid odor. | ||
|---|---|---|---|
| Boiling point | 286°F | Molecular weight | 72.1 |
| Freezing point/melting point | 55°F | Vapor pressure | 3 mmHg |
| Flash point | 121°F | Vapor density | |
| Specific gravity | 1.05 | Ionization potential | |
| Lower explosive limit (LEL) | 2.4% | Upper explosive limit (UEL) | 8.02% |
| NFPA health rating | 3 | NFPA fire rating | 2 |
| NFPA reactivity rating | 2 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 0117 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | 2 Anasorb 708 tubes in series [SKC 226-30-08] | ||
| Sampling time* | 240 min |
||
| Sampling volume (TWA)* | 24 L |
||
| Sampling flow rate (TWA)* | 0.1 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | LC-UV | ||
| Method reference | OSHA PV2005 (partially 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 | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
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 | REL-TWA |
2 ppm (6 mg/m³) |
TLV-TWA |
2 ppm [1986] |
PEL-TWA |
2 ppm (5.9 mg/m³) |
|
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
NA |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
|
Notes:
Not established |
Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: IARC-3, TLV-A4 | Notes: | ||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
1 ppm/50 ppm/250 ppm |
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Acrylic acid, stabilized NIOSH: Pocket Guide to Chemical Hazards - Acrylic acid Literature References
|
Last Updated Date : 12/15/2020