ACETYLACETONE (2,4-PENTANEDIONE)
| CAS # | 123-54-6 |
|---|---|
| Formula |
C₅H₈O₂ |
| Synonyms |
2,4-pentanedione; acetoacetone; diacetyl methane |
| Physical description | A colorless or yellow colored liquid. | ||
|---|---|---|---|
| Boiling point | 284.7°F | Molecular weight | 100.12 |
| Freezing point/melting point | -10.3°F | Vapor pressure | |
| Flash point | 93°F | Vapor density | |
| Specific gravity | 0.975 | Ionization potential | |
| Lower explosive limit (LEL) | 2.4% | Upper explosive limit (UEL) | 11.6% |
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | A178 |
|---|---|
| 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 801-233-5100 |
| 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 Sampler/Sampling media | |
|---|---|
| Bulk Method |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
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 | TLV-TWA |
25 ppm [2010] |
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 |
Y |
Skin notation |
NA |
|
Notes:
Not established |
Notes:
Not established |
Notes: |
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
|
NOAA: CAMEO Chemicals - Pentane-2,4-dione NIOSH: Pocket Guide to Chemical Hazards - Pentane-2,4-dione Literature References
|
Last Updated Date : 01/24/2024