Morpholine
| Formula: | C₄H₉NO |
| CAS Number: | 110-91-8 |
| EC Number (EINECS): | 203-539-1 |
| HS Code: | 29215100 |
| UN Number: | 2052 |
| IUPAC Name: | Morpholine |
| Also Known As: | 1-Oxa-4-azaspiro[4.4]nonane; 4-Hydroxyethylpiperazine (common name in some industries) |
| Molecular Weight, g/mol: | 87.12 |
Typical Specifications
| Appearance: | Colorless to pale yellow liquid |
| Odor: | Amine-like, fishy |
| Melting Point, °C: | 2.5–3.5 |
| Boiling Point, °C: | 129–130 |
| Density, g/cm³ (at 20°C): | 1.0 |
| Flash Point, °C: | 43 (closed cup) |
| Refractive Index (20°C): | 1.446 |
| Solubility: | Miscible with water and most organic solvents |
| pH (1% solution): | ~11 |
| Vapor Pressure (at 20°C): | 22 mmHg |
| Purity, %: | ≥99.0 |
| Grades Available: | Industrial, Technical |
| Packaging: | 25kg drums, 200kg drums, 1000kg IBC |
Applications / Uses
Primary Applications
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Used as a solvent in chemical synthesis
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Intermediate in rubber accelerators, corrosion inhibitors, and surfactants
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Raw material for pharmaceuticals and agrochemicals
Secondary Applications
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Used in textile processing and coatings
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Ingredient in flotation agents and dyes
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Component in epoxy curing agents
End Industries Served: Chemicals, Pharmaceuticals, Agrochemicals, Rubber, Textiles, Coatings, Surfactants
Safety & Handling Information
Hazard Class (GHS): Corrosive to skin and eyes; harmful if inhaled
Hazard Statements (H-Codes):
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H302: Harmful if swallowed
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H312: Harmful in contact with skin
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H315: Causes skin irritation
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H319: Causes serious eye irritation
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H332: Harmful if inhaled
Precautionary Statements (P-Codes):
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P261: Avoid breathing vapors
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P280: Wear protective gloves/eye protection
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P302 + P352: IF ON SKIN – wash with plenty of soap and water
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P305 + P351 + P338: IF IN EYES – rinse cautiously with water, remove contact lenses if present
Storage Conditions
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Store in cool, dry, ventilated place
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Keep container tightly closed and away from heat sources
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Avoid moisture and contamination
Transport Information
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ADR/RID: Class 8, UN2052, PG II
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IMDG: Class 8, UN2052
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IATA: Class 8, UN2052