DIACETONE ALCOHOL (4-HYDROXY-4-METHYL-2-PENTANONE)†
| CAS # | 123-42-2 |
|---|---|
| Formula |
C₆H₁₂O₂ |
| Synonyms |
diacetone; 4-hydroxy-4-methyl-2-pentanone; 2-methyl-2-pentanol-4-one |
| Physical description | Colorless liquid with a faint, minty odor. | ||
|---|---|---|---|
| Boiling point | 334°F | Molecular weight | 116.2 |
| Freezing point/melting point | -47°F | Vapor pressure | 1 mmHg |
| Flash point | 125°F | Vapor density | |
| Specific gravity | 0.94 | Ionization potential | |
| Lower explosive limit (LEL) | 1.8% | Upper explosive limit (UEL) | 6.9% |
| NFPA health rating | 1 | NFPA fire rating | 2 |
| NFPA reactivity rating | 0 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 0860 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | CSC tube (100/50 mg) [SKC 226-01] | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 1-10 L |
||
| Sampling flow rate (TWA)* | 0.01-0.2 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | GC-FID | ||
| Method reference | NIOSH 1402 (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 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 |
50 ppm (240 mg/m³) |
REL-TWA |
50 ppm (240 mg/m³) |
TLV-TWA |
50 ppm [1979] |
PEL-TWA |
50 ppm (240 mg/m³) |
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
| Notes: | Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
1800 ppm |
|||||
| Carcinogenic classifications: Not listed |
Notes:
10% of LEL |
||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Diacetone alcohol NIOSH: Pocket Guide to Chemical Hazards - Diacetone alcohol Literature References
|
Last Updated Date : 12/22/2020