1. OSHA Occupational Chemical Database
  2. HEXAHYDROPHTHALIC ANHYDRIDE, ALL ISOMERS
Label abbreviations descriptions

HEXAHYDROPHTHALIC ANHYDRIDE, ALL ISOMERS

Chemical Identification
Chemical Identification
CAS # 85-42-7
Formula

C₈H₁₀O₃
Synonyms
 

hexahydroisobenzofuran-1,3-dione; HHPA; 1,2-cyclohexanedicarboxylic anhydride
Physical Properties
Physical Properties
Physical description Dry powder or solid in various forms, or clear, colorless, viscous liquid.
Boiling point 564.8°F Molecular weight 154.17
Freezing point/melting point 89.6°F Vapor pressure 5.35x10(-2)
Flash point 300.2°F Vapor density 1.19
Specific gravity 5.3 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating 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.) H106
Sampling group
Sampler/Sampling media
Sampling time*
 

 
Sampling volume (TWA)*
 

 
Sampling flow rate (TWA)*
 

 
Sampling volume (STEL/Peak/C)*
 

 
Sampling flow rate (STEL/Peak/C)*
 

 
Analytical method instruments
Method reference
Notes
 

OSHA staff only, please contact SLTC at 801-233-4900
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
 

 

 PEL-STEL
 

 
PEL-C
 

 

 REL-C
 

 

 TLV-C
 

0.005 mg/m³ (inhalable fraction and vapor) [2002]

 PEL-C
 

 
Skin notation
 

NA

 Skin notation
 

NA

 Skin notation
 

N

 Skin notation
 

NA
Notes:
 

Not established

 Notes:
 

Not established

 Notes:
 

respiratory sensitizer (RSEN)

 Notes:
 

Not established
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: 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 - Not listed

NIOSH: Pocket Guide to Chemical Hazards - Not listed

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Hexahydrophthalic anhydride, all isomers. See annual publication for most recent information.

Last Updated Date : 12/31/2020