PERACETIC ACID

Chemical Identification
Chemical Identification
CAS # 79-21-0
Formula

C₂H₄O₃

Synonyms

peroxyacetic acid; acetic peroxide; monoperacetic acid; peroxoacetic acid

Physical Properties
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
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

Sampling volume (TWA)*

15 L

Sampling flow rate (TWA)*

1 L/min

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.

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
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
 

 

On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
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
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
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

Health factors:  See NIH-NLM PubChem. IDLH
 

0.64 ppm (1.7 mg/m³)

Carcinogenic classifications: TLV-A4 Notes:
 

existing IDLH under review by NIOSH

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Peracetic acid

NIOSH: Pocket Guide to Chemical Hazards - Not listed

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Peracetic acid. See annual publication for most recent information.
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: SD8750000

Last Updated Date : 01/22/2021