2,3-DIMETHYLBUTANE
Chemical Identification | |
---|---|
CAS # | 79-29-8 |
Formula |
C₆H₁₄ |
Synonyms |
diethylmethylmethane; diisopropyl; 2,2-dimethylbutane; 2,3-dimethylbutane; isohexane; 2-methylpentane; 3-methylpentane |
Physical Properties | |||
---|---|---|---|
Physical description | Clear liquids with mild, gasoline-like odors. | ||
Boiling point | 136.4°F | Molecular weight | 86.18 |
Freezing point/melting point | -199.3°F | Vapor pressure | 200 mmHg at 70°F |
Flash point | -20°F | Vapor density | 3 |
Specific gravity | 0.6616 | Ionization potential | |
Lower explosive limit (LEL) | 1.2% | Upper explosive limit (UEL) | 7% |
NFPA health rating | 1 | NFPA fire rating | 3 |
NFPA reactivity rating | 0 | NFPA special instruction | |
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Monitoring Methods Used by OSHA | ||||||
---|---|---|---|---|---|---|
Analyte code (IMIS no.) | ||||||
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 | ||||||
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 |
---|
|
On-Site Screening Techniques | ||||||
---|---|---|---|---|---|---|
Device | ||||||
Model/Type | ||||||
Sampling information (see manufacturer instructions) |
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 |
|||||
PEL-TWA |
|
REL-TWA |
100 ppm (350 mg/m³) |
TLV-TWA |
500 ppm [1979] |
PEL-TWA |
500 ppm (1800 mg/m³) |
PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
1000 ppm [1979] |
PEL-STEL |
1000 ppm (3600 mg/m³) |
PEL-C |
|
REL-C |
510 ppm (1800 mg/m³) [15 minutes] |
TLV-C |
|
PEL-C |
|
Skin notation |
NA |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Notes:
Not established |
Notes:
|
Notes:
|
Notes:
as Hexane, other isomers |
||||
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 |
---|
NOAA: CAMEO Chemicals - 2,3-Dimethylbutane NIOSH: Pocket Guide to Chemical Hazards - Hexane isomers (excluding n-Hexane) Literature References
|
Last Updated Date : 12/15/2020