METHYL METHACRYLATE†

Chemical Identification
Chemical Identification
CAS # 80-62-6
Formula
 

C₅H₈O₂

Synonyms
 

methacrylate monomer; methyl ester of methacrylic acid; methyl methacrylate monomer; uninhibited; methyl-2-methyl-2-propenoate

Physical Properties
Physical Properties
Physical description Colorless liquid with an acrid, fruity odor.
Boiling point 214°F Molecular weight 100.1
Freezing point/melting point -54°F Vapor pressure 29 mmHg
Flash point 50°F (open cup) Vapor density 3.45
Specific gravity 0.94 Ionization potential 9.70 eV
Lower explosive limit (LEL) 1.7% Upper explosive limit (UEL) 8.2%
NFPA health rating 2 NFPA fire rating 3
NFPA reactivity rating 2 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 1774
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) coated with 10% t-butylcatechol [SKC 226-73]
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-FID
Method reference OSHA 94 (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 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
 

100 ppm (410 mg/m³)

REL-TWA
 

100 ppm (410 mg/m³)

TLV-TWA
 

50 ppm [1992]

PEL-TWA
 

50 ppm (205 mg/m³)

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

100 ppm [1992]

PEL-STEL
 

100 ppm (410 mg/m³)

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Notes:
 

See 29 CFR 1910.1000 Table Z-1.

Notes:
 

 

Notes:
 

dermal sensitizer (DSEN)

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

1000 ppm

Carcinogenic classifications: IARC-3, TLV-A4, EPA-NL; E Notes:
 

 

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

 

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Methyl methacrylate monomer

NIOSH: Pocket Guide to Chemical Hazards - Methyl methacrylate

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Methyl Methacrylate. See annual publication for most recent information.
  • California Occupational Safety & Health Standards Board: Initial and Final Statement of Reasons. July 6, 2006.
  • EPA: Integrated Risk Information System - Methyl Methacrylate (CASRN 80-62-6). March 2, 1998.
  • Fisher, A.A. and Baran, R.L.: Adverse reactions to acrylate sculptured nails with particular reference to prolonged paresthesia. Am. J. Contact Dermatitis 2(1): 38-42, 1991.
  • Freeman, S., Lee, M.-S. and Gudmundsen, K.: Adverse contact reactions to sculpted acrylic nails: 4 case reports and a literature review. Contact Dermatitis 33(6): 381-385, 1995.
  • Mizunuma, K., et al.: Biological monitoring and possible health effects in workers occupationally exposed to methyl methacrylate. Int. Arch. Occup. Environ. Health 65(4): 227-232, 1993.
  • NIOSH: Occupational Health Guideline for Methyl Methacrylate. September 1978.
  • Piirilä, P., et al.: Occupational respiratory hypersensitivity caused by preparations containing acrylates in dental personnel. Clin. Exp. Allergy 28(11): 1404-1411, 1998.

Last Updated Date : 01/05/2021