MORPHOLINE†
| CAS # | 110-91-8 |
|---|---|
| Formula |
C₄H₉NO |
| Synonyms |
diethylene imidoxide; diethylene oximide; tetrahydro-1,4-oxazine; tetrahydro-p-oxazine |
| Physical description | Colorless liquid with a weak, ammonia- or fish-like odor. | ||
|---|---|---|---|
| Boiling point | 264°F | Molecular weight | 87.12 |
| Freezing point/melting point | 23.2°F | Vapor pressure | 6 mmHg |
| Flash point | 98°F (open cup) | Vapor density | 3 |
| Specific gravity | 1.007 | Ionization potential | 8.88 eV |
| Lower explosive limit (LEL) | 1.8% | Upper explosive limit (UEL) | 10.8% |
| NFPA health rating | 3 | NFPA fire rating | 3 |
| NFPA reactivity rating | 1 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 1797 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | XAD-7 tube (80/40 mg) coated with 10% phosphoric acid [SKC 226-98] | ||
| Sampling time* | |||
| Sampling volume (TWA)* |
10 L |
||
| Sampling flow rate (TWA)* |
0.1 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | GC-FID | ||
| Method reference | OSHA PV2123 (partially 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 | Infrared spectrophotometer | Infrared spectrophotometer | |||
|---|---|---|---|---|---|
| Model/Type | Miran 1A & 1B | Miran 103 | |||
|
Sampling information (see manufacturer instructions) |
0.7 ppm@9 µm | 0-100 ppm@9 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 |
20 ppm (70 mg/m³) |
REL-TWA |
20 ppm (70 mg/m³) |
TLV-TWA |
20 ppm [1992] |
PEL-TWA |
20 ppm (70 mg/m³) |
| PEL-STEL | REL-STEL |
30 ppm (105 mg/m³) |
TLV-STEL | PEL-STEL |
30 ppm (105 mg/m³) |
||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
| Notes: | Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
1400 ppm |
|||||
| Carcinogenic classifications: IARC-3, TLV-A4 |
Notes:
10% of LEL |
||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Morpholine NIOSH: Pocket Guide to Chemical Hazards - Morpholine Literature References
|
Last Updated Date : 09/22/2022