PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Monomethylhydrazine; (Methyl hydrazine) | 60-34-4 | 1244 |
13.00
14.01
4.01
11.01
14.02
4.08
4.05
7.01
8.00
4.09
|
|||||||||
| Formula | Synonyms | |||||||||||
| CH6N2 | METHYLHYDRAZINE, 1-METHYLHYDRAZINE, HYDRAZINE, METHYL-, HYDRAZOMETHANE, METHYL HYDRAZINE, MÉTHYLHYDRAZINE (DOT FRENCH), METILHIDRAZINA (DOT SPANISH), MMH, MONOMETHYLHYDRAZINE, UN 1244 | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 46.07 | L | -52.36 | 87.5 | 75 | 32.9 | 0.874 | 25000 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.082 | 0.90 | 2.7 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.15 | 1.7 | 5.1 |
Technical Basis
A review of available sources identified exposure limits for this chemical including an AEGL-2 and AEGL-3. The AEGLs were selected as the TEEL-3 and TEEL-2 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 values that are consistent with Rev. 29A.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values that are consistent with Rev. 29A.
References
Chemical information: Retrieved from Table 3-2 of the EPA Technical Support document: https://www.epa.gov/aegl/methyl-hydrazine-results-aegl-program
AEGLs: https://www.epa.gov/aegl/methyl-hydrazine-results-aegl-program
Other exposure limits: https://www.osha.gov/chemicaldata/439