4-ethyl-morpholin
N-Ethylmorpholine
CAS: 100-74-3
Molecular Formula: C6H13NO
4-ethyl-morpholin - Names and Identifiers
| Name | N-Ethylmorpholine |
| Synonyms | Texacat NEM Toyocat -NEM ethylmorpholine 4-ETHYLMORPHOLINE N-Ethylmorpholine N-ETHYLMORPHOLINE LUPRAGEN(R) N 104 4-ethyl-morpholin 4-ethylmorpholine N-Ethyl morpholine 4-ethylmorpholin-4-ium 4-ETHYLMORPHOLINE, FOR PROTEIN SEQUENCE ANALYSIS |
| CAS | 100-74-3 |
| EINECS | 202-885-0 |
| InChI | InChI=1/C6H13NO/c1-2-7-3-5-8-6-4-7/h2-6H2,1H3/p+1 |
4-ethyl-morpholin - Physico-chemical Properties
| Molecular Formula | C6H13NO |
| Molar Mass | 115.17 |
| Density | 0.91 g/mL at 20 °C (lit.) |
| Melting Point | -63 °C (lit.) |
| Boling Point | 139 °C (lit.) |
| Flash Point | 82°F |
| Water Solubility | miscible |
| Solubility | miscible |
| Vapor Presure | 8.1 hPa (20 °C) |
| Appearance | Powder |
| Color | Cream to beige to brown-grey |
| Exposure Limit | NIOSH REL: TWA 5 ppm (23 mg/m3), IDLH 100 ppm; OSHA PEL: TWA 20ppm (94 mg/m3); ACGIH TLV: TWA 5 ppm (adopted). |
| BRN | 102969 |
| pKa | 7.67(at 25℃) |
| PH | 11.8 (100g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Flammable. Incompatible with strong oxidizing agents. Slightly air sensitive. |
| Sensitive | Air Sensitive |
| Explosive Limit | 1.9%(V) |
| Refractive Index | n20/D 1.441(lit.) |
| Physical and Chemical Properties | Properties: colorless transparent liquid, corrosive, slightly toxic liquid. |
| Use | Production of preservatives, emulsifiers and coatings. This product is soluble in water, alcohol, ether, can be used as solvent, Catalyst, dye, drug, surfactant intermediates. |
4-ethyl-morpholin - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R10 - Flammable R21/22 - Harmful in contact with skin and if swallowed. R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S16 - Keep away from sources of ignition. |
| UN IDs | UN 2920 8/PG 2 |
| WGK Germany | 1 |
| RTECS | QE4025000 |
| FLUKA BRAND F CODES | 8-23 |
| TSCA | Yes |
| HS Code | 29349990 |
| Hazard Class | 8 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: 1640 mg/kg LD50 dermal Rabbit 900 mg/kg |
4-ethyl-morpholin - Nature
Open Data Verified Data
colorless liquid, boiling point 138 °c. Flash point 32 °c. Freezing point -63 °c. The relative density was 0. 916. The vapor pressure was 0.813kPa.
Last Update：2025-06-10 22:55:16
4-ethyl-morpholin - Preparation Method
Open Data Verified Data
with cooling and stirring, morpholine is slowly added with bromoethane, and the reaction temperature is controlled to be below 70 ℃. After feeding, the mixture is refluxed for 6 hours, the oil layer was separated by neutralization with 50% NaOH solution until it was strongly alkaline. The water layer was extracted with ether and then combined with the oil layer.
Last Update：2022-01-01 10:53:27
4-ethyl-morpholin - Application
Open Data Verified Data
solvent, raw materials for organic synthesis.
Last Update：2025-08-19 16:24:40
4-ethyl-morpholin - Safety
Open Data Verified Data
- this product and morpholine can also stimulate the skin and mucous membranes, but the toxicity is light, did not cause liver and kidney changes. Mice inhaled LC50 18mg/L. Rats were fed with LD50 1.2g/kg. According to the change of the sum of the central nervous system, the threshold concentration of the product is 0. 09~0.1 mg/L, and the concentration is gradually increased after repeated administration. The threshold concentration of stimulation for human was 0.22 mg/L. The irritant effect on the skin was 1/20 of that of Morpholine. The allowable concentration in air is 5 mg/m3. See morpholine (D 059) for personal protection and precautions.
- tightly sealed in glass bottles or ceramic cans, jacket barrel packaging. Store in a cool, dry and ventilated place. Sunscreen, moisture, away from fire, heat source. Light loading and light unloading should be carried out to avoid package breakage. According to the provisions of the storage and transportation of toxic chemicals.
Last Update：2022-01-01 10:53:28
4-ethyl-morpholin - Reference Information
| freezing point | -63 ℃ |
| LogP | 0.08 at 24.6℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| purpose | used as solvent, also used in organic synthesis production of preservatives, emulsifiers and coatings. This product is soluble in water, alcohol, ether, can be used as solvent, Catalyst, dye, drug, surfactant intermediates. it can be used as a catalyst in the field of PU, as a solvent for oils and resins, and as an intermediate for organic synthesis. |
| production method | is derived from the combination of morpholine and bromoethane. |
| category | flammable liquid |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 1780 mg/kg; Oral-mouse LD50: 1200 mg/kg |
| stimulation data | Skin-rabbit 453 mg mild; Eye-rabbit 200 mg severe |
| flammability hazard characteristics | flammable in case of open flame, high temperature and oxidant; toxic NOx smoke from combustion |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Stored separately from oxidants and acids |
| extinguishing agent | dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| spontaneous combustion temperature | 160°C |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-and health-threatening concentration | 100 ppm |
Last Update：2024-04-09 19:55:45
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