LIMONENE

Chemical Identification
Chemical Identification
CAS # 138-86-3
Formula

C₁₀H₁₆

Synonyms

1-methyl-4-(1-methylethenyl)cyclohexene, (R); l-limonene; d-limonene; dl-limonene; dipentene; Acintene DP; Cinene; Dipanol; Unitene; 1-methyl-4-isopropentyl-1-cyclohexene

Physical Properties
Physical Properties
Physical description A colorless liquid with an odor of lemon.
Boiling point 352°F Molecular weight 136.2
Freezing point/melting point -40°F Vapor pressure
Flash point 115°F Vapor density
Specific gravity 0.842 at 69.8°F Ionization potential
Lower explosive limit (LEL) 0.7% Upper explosive limit (UEL) 6.1%
NFPA health rating 2 NFPA fire rating 2
NFPA reactivity rating 0 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.) L129
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*

50 min

Sampling volume (TWA)*

10 L

Sampling flow rate (TWA)*

0.2 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-FID
Method reference OSHA PV2036 (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 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 PEL-C
Skin notation

NA

Skin notation

NA

Skin notation

NA

Skin notation

NA

Notes:

Not established

Notes:

Not listed

Notes:

Not listed

Notes:

Not listed

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 - Dipentene

NIOSH: Pocket Guide to Chemical Hazards - Dipentene

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Acetophenone. See annual publication for most recent information.
  • Eberde, E.G. (editor) Drugs and chemicals general price list. The Southern Pharmaceutical Journal 5(4): 1-7, 1912.
  • Pohanish, R.P. (editor) Acetophenone. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 44-45.

Last Updated Date : 01/04/2021