DIMETHYLAMINE (ANHYDROUS)†
| CAS # | 124-40-3 |
|---|---|
| Formula |
C₂H₇N |
| Synonyms |
N-methylmethanamine |
| Physical description | Colorless gas with an ammonia- or fish-like odor. | ||
|---|---|---|---|
| Boiling point | 44°F | Molecular weight | 45.1 |
| Freezing point/melting point | -134°F | Vapor pressure | 1.7 atm |
| Flash point | 20°F (liquid) | Vapor density | 1.56 |
| Specific gravity | 0.67 (liquid at 44°F) | Ionization potential | 8.24 eV |
| Lower explosive limit (LEL) | 2.8% | Upper explosive limit (UEL) | 14.4% |
| 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.) | 0928 | ||
|---|---|---|---|
| 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 34 (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 | Gastec 180 | Miran 1A & 1B | |||
|
Sampling information (see manufacturer instructions) |
1-60 ppm range | 1.2 ppm@8.8 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 (18 mg/m³) |
REL-TWA |
10 ppm (18 mg/m³) |
TLV-TWA |
5 ppm [2013] |
PEL-TWA |
5 ppm (9.2 mg/m³) |
| PEL-STEL | REL-STEL | TLV-STEL |
15 ppm [2013] |
PEL-STEL |
15 ppm (27.6 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:
dermal sensitizer (DSEN) |
Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
500 ppm |
|||||
| Carcinogenic classifications: TLV-A4 | Notes: | ||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
0.6 ppm/100 ppm/350 ppm |
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Dimethylamine, anhydrous NIOSH: Pocket Guide to Chemical Hazards - Dimethylamine Literature References
|
Last Updated Date : 12/28/2020