Methyl Diethanolamine
| Formula: | C₅H₁₃NO₂ |
| CAS Number: | 105-59-9 |
| EC Number (EINECS): | 203-581-6 |
| HS Code: | 29221900 |
| UN Number: | Not classified as hazardous for transport |
| IUPAC Name: | 2,2′-(Methylazanediyl)diethanol |
| Also Known As: | N-Methyldiethanolamine; Diethanol(methyl)amine |
| Molecular Weight, g/mol: | 119.16 |
Typical Specifications
| Appearance: | Clear, colorless to pale yellow liquid |
| Odor: | Slight ammonia-like odor |
| Melting Point, °C: | -21 |
| Boiling Point, °C: | 247–248 |
| Density, g/cm³ (at 20°C): | 1.040–1.050 |
| Flash Point, °C: | 138 (closed cup) |
| Refractive Index (20°C): | 1.47 |
| Solubility: | Miscible with water and alcohols |
| Vapor Pressure (at 20°C): | <0.01 mmHg |
| Purity, %: | ≥99.0 |
| Grades Available: | Industrial, Gas Treating, Technical |
| Packaging: | 200kg drums, 1000kg IBCs, bulk ISO tanks |
Applications / Uses
Primary Applications
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Gas treating (selective absorption of H₂S and CO₂ in natural gas & refinery gas sweetening)
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Intermediate in synthesis of surfactants and emulsifiers
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Catalyst and neutralizing agent in coatings and textile finishing
Secondary Applications
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Used in polyurethane foam production
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Additive in cement grinding aids
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Component in corrosion inhibitors
End Industries Served: Oil & Gas, Petrochemicals, Refining, Textiles, Coatings, Cement, Surfactants
Safety & Handling Information
Hazard Class (GHS): Skin Irritant (Category 2), Eye Irritant (Category 2A)
Hazard Statements (H-Codes):
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H315: Causes skin irritation
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H319: Causes serious eye irritation
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H335: May cause respiratory irritation
Precautionary Statements (P-Codes):
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P280: Wear protective gloves/eye protection
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P261: Avoid breathing vapors/mist
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P305 + P351 + P338: IF IN EYES – rinse cautiously with water for several minutes
Storage Conditions
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Store in tightly closed containers
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Keep in cool, well-ventilated place
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Protect from moisture and strong oxidizing agents
Transport Information
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ADR/RID: Not classified as dangerous goods
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IMDG: Not classified as dangerous goods
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IATA: Not classified as dangerous goods