PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Isobutyronitrile | 78-82-0 | 2284 |
15.01
11.01
4.08
4.05
7.01
8.00
7.00
4.10
4.07
3.02
|
|||||||||
| Formula | Synonyms | |||||||||||
| C4H7N | ISOBUTYRONITRILE, 1-CYANO-1-METHYLETHANE, 2-CYANOPROPANE, 2-METHYLPROPANE NITRILE, 2-METHYLPROPANENITRILE, 2-METHYLPROPIONITRILE, ALPHA-METHYLPROPANENITRILE, ALPHA-METHYLPROPIONITRILE, DIMETHYLACETONITRILE, IBN, ISOBUTANENITRILE, ISOBUTIRONITRILO (DOT SPANISH), ISOBUTYRONITRILE (DOT FRENCH), ISOPROPYL CYANIDE, ISOPROPYL NITRILE, ISOPROPYLCYANIDE, PROPANENITRILE, 2-METHYL-, PROPANOIC ACID, 2-METHYL-, NITRILE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 69.11 | L | -71.5 | 103.9 | 32.7 | 25 | 0.7704 @ 20°C |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.18 | 2.0 | 6.1 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.51 | 5.7 | 17 |
Technical Basis
A review of available sources identified AEGL-2 and AEGL-3 exposure limits for this chemical. The AEGLs were selected as the TEELs due to their priority among the emergency exposure limits (Section 1). Due to insufficient data, an AEGL-1 does not exist for this chemical, therefore the TEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL ppm values that are consistent with Rev. 29A. Minor differences in the reported TEEL-1 and TEEL-2 values in units of mg/m3 may be due to rounding.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL ppm values that are consistent with Rev. 29A. Minor differences in the reported TEEL-1 and TEEL-2 values in units of mg/m3 may be due to rounding.
References
https://www.epa.gov/aegl/isobutyronitrile-results-aegl-program