PERACETIC ACID
| Chemical Identification | |
|---|---|
| CAS # | 79-21-0 |
| Formula |
C₂H₄O₃ |
| Synonyms |
peroxyacetic acid; acetic peroxide; monoperacetic acid; peroxoacetic acid |
| Physical Properties | |||
|---|---|---|---|
| Physical description | Colorless liquid with a strong, pungent, acrid odor. | ||
| Boiling point | 221°F | Molecular weight | 76.05 |
| Freezing point/melting point | -22 to 32°F | Vapor pressure | |
| Flash point | 105°F (60% acetic acid solution) | Vapor density | |
| Specific gravity | 1.226 at 59°F | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | 3 | NFPA fire rating | 2 |
| NFPA reactivity rating | 4 | NFPA special instruction | OX: Possesses oxidizing properties. |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Monitoring Methods Used by OSHA | ||||||
|---|---|---|---|---|---|---|
| Analyte code (IMIS no.) | P230 | |||||
| Sampling group | ||||||
| Sampler/Sampling media | 25-mm quartz fiber filter, coated with titanium oxysulfate, followed by an impinger containing methyl p-tolyl sulfide (MTS) and 4-chlorophenyl methyl sulfone in acetonitrile (ACN) [SLTC116] | |||||
| Sampling time* | 15 min |
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| Sampling volume (TWA)* | 15 L |
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| Sampling flow rate (TWA)* | 1 L/min |
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| Sampling volume (STEL/Peak/C)* | ||||||
| Sampling flow rate (STEL/Peak/C)* | ||||||
| Analytical method instruments | GC-FID | |||||
| Method reference | OSHA PV2321 (partially validated) | |||||
| Notes | The sampling method described in OSHA Method PV2321 will collect both particulate and vapor. However, any peracetic acid particulate collected on the pre-filter (H₂O₂ scrubber) will volatilize quickly, and the resultant vapor will be collected in the impinger solution. |
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| 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 Method | |
|---|---|
| Sampler/Sampling media | |
| Bulk Method |
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| On-Site Screening Techniques | ||||||
|---|---|---|---|---|---|---|
| Device | ||||||
| Model/Type | ||||||
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Sampling information (see manufacturer instructions) |
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| Exposure Limits | |||||||
|---|---|---|---|---|---|---|---|
|
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 |
|
PEL-TWA |
|
| PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
0.4 ppm (inhalable fraction and vapor) [2013] |
PEL-STEL |
|
| PEL-C |
|
REL-C |
|
TLV-C |
|
PEL-C |
|
| Skin notation |
NA |
Skin notation |
NA |
Skin notation |
N |
Skin notation |
NA |
|
Notes:
Not established |
Notes:
Not established |
Notes:
|
Notes:
Not established |
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| Health factors: See NIH-NLM PubChem. | IDLH |
0.64 ppm (1.7 mg/m³) |
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| Carcinogenic classifications: TLV-A4 |
Notes:
existing IDLH under review by NIOSH |
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|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
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| Additional Resources and Literature References |
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|
NOAA: CAMEO Chemicals - Peracetic acid NIOSH: Pocket Guide to Chemical Hazards - Not listed Literature References
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Last Updated Date : 01/22/2021