METHYLAMINE†
| CAS # | 74-89-5 |
|---|---|
| Formula |
CH₅N |
| Synonyms |
aminomethane; methylamine (anhydrous); methylamine (aqueous); monomethylamine |
| Physical description | Colorless gas with a fish- or ammonia-like odor. | ||
|---|---|---|---|
| Boiling point | 20.3°F | Molecular weight | 31.1 |
| Freezing point/melting point | -136°F | Vapor pressure | 3.0 atm |
| Flash point | Vapor density | 1.08 | |
| Specific gravity | 0.693 at 20.3°F | Ionization potential | 8.97 eV |
| Lower explosive limit (LEL) | 4.9% | Upper explosive limit (UEL) | 20.7% |
| NFPA health rating | 3 | NFPA fire rating | 4 |
| NFPA reactivity rating | 0 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 1665 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | XAD-7 tube (80/40 mg) coated with 10% NBD chloride [SKC 226-96] |
| Sampling time* |
50 min |
| Sampling volume (TWA)* |
10 L |
| Sampling flow rate (TWA)* |
0.2 L/min |
| Sampling volume (STEL/Peak/C)* | |
| Sampling flow rate (STEL/Peak/C)* | |
| Analytical method instruments | HPLC |
| Method reference | OSHA 40 (fully 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 | Detector tube | Infrared spectrophotometer |
|---|---|---|
| Model/Type | Matheson-Kitagawa 8014-222S | Miran 1A & 1B |
|
Sampling information (see manufacturer instructions) |
1-40 ppm range | 1.9 ppm@3.4 µm |
|
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 |
10 ppm (12 mg/m³) |
REL-TWA |
10 ppm (12 mg/m³) |
TLV-TWA |
5 ppm [2012] |
PEL-TWA |
5 ppm (6.4 mg/m³) |
| PEL-STEL | REL-STEL | TLV-STEL |
15 ppm [2012] |
PEL-STEL |
15 ppm (19 mg/m³) |
||
| 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 |
100 ppm |
|||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
10 ppm/100 ppm/500 ppm |
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Methylamine, anhydrous NIOSH: Pocket Guide to Chemical Hazards - Methylamine Literature References
|
Last Updated Date : 01/29/2021