ISOBUTYL ALCOHOL (ISOBUTANOL)†
| CAS # | 78-83-1 |
|---|---|
| Formula |
C₄H₁₀O |
| Synonyms |
IBA; isopropylcarbinol; 2-methyl-1-propanol |
| Physical description | Colorless, oily liquid with a sweet, musty odor. | ||
|---|---|---|---|
| Boiling point | 227°F | Molecular weight | 74.12 |
| Freezing point/melting point | -162°F | Vapor pressure | 9 mmHg |
| Flash point | 82°F | Vapor density | 2.55 |
| Specific gravity | 0.8 | Ionization potential | 10.12 eV |
| Lower explosive limit (LEL) | 1.2% | Upper explosive limit (UEL) | 10.9% |
| NFPA health rating | 2 | NFPA fire rating | 3 |
| NFPA reactivity rating | 0 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 1536 | ||
|---|---|---|---|
| Sampling group | OVSG-2 | ||
| Sampler/Sampling media | 2 Anasorb 747 sampling tubes (6 mm glass tubes, the front tube contains 400 and the back 200 mg of sorbent) connected in series [SKC 226-82], tube holder [SKC 222-3L-1], Type D cover [SKC 224-29D] | ||
| Sampling time* | 240 min |
||
| Sampling volume (TWA)* | 12 L |
||
| Sampling flow rate (TWA)* | 0.05 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | GC-FID | ||
| Method reference | OSHA 5001 (fully validated) | ||
| Notes | Separate tubes and seal each after sampling. |
||
| 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 | Detector tube | Detector tube | |||
|---|---|---|---|---|---|
| Model/Type | Gastec 116 | Matheson-Kitagawa 8014-208U | |||
|
Sampling information (see manufacturer instructions) |
2 strokes, 1-150 ppm range, uncertainty 25% for 5-50 ppm, 16% for 50-150 ppm | 3 strokes, approx 2-100 ppm range |
|
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 |
100 ppm (300 mg/m³) |
REL-TWA |
50 ppm (150 mg/m³) |
TLV-TWA |
50 ppm [1973] |
PEL-TWA |
50 ppm (150 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 |
1600 ppm |
|||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Isobutanol NIOSH: Pocket Guide to Chemical Hazards - Isobutanol alcohol Literature References
|
Last Updated Date : 06/14/2023