3-Dimethylaminopropylurea
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Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
CAS No. 31506-43-1
Content 70%
Packing 180kg/drum
Names and Identifiers
| Name | Urea, 3-(dimethylamino)propyl- |
| Synonyms | [3-(Dimethylamino)propyl]urea Urea, 3-(dimethylamino)propyl- Urea, N-[3-(dimethylamino)propyl]- |
| CAS | 31506-43-1 |
| EINECS | 401-950-2 |
31506-43-1 – Physico-chemical Properties
| Molecular Formula | C6H15N3O |
| Molar Mass | 145.2 |
| Density | 1.005±0.06 g/cm3 (20 ºC 760 Torr) |
| Boling Point | 224.4±32.0℃ (760 Torr) |
| Flash Point | 89.5±25.1℃ |
| pKa | 14.14±0.46(Predicted) |
31506-43-1 – Risk and Safety
| Hazard Symbols | Xi – Irritant |
| Risk Codes | 41 – Risk of serious damage to eyes |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 – Wear eye / face protection. |
1. Basic Chemical Properties
| Property | Specification |
|---|---|
| Chemical Name | 3-Dimethylaminopropylurea |
| Molecular Formula | C₆H₁₅N₃O |
| Appearance | White to off-white crystalline powder |
| Melting Point | 95–105°C |
| Solubility | Soluble in water, ethanol, acetone |
| pH (10% solution) | 8.0–10.0 |
| Molecular Weight | 145.20 g/mol |
| Ionic Nature | Weakly basic (tertiary amine) |
2. Applications & Performance
| Application | Function | Typical Concentration |
|---|---|---|
| Epoxy Hardener | Latent curing agent | 5–20% w/w |
| Polymer Modification | Crosslinking aid | 1–10% w/w |
| Textile Auxiliaries | Dye-fixing agent | 0.5–5% w/w |
| Adhesives | Curing accelerator | 0.1–2% w/w |
| Personal Care | pH adjuster | 0.5–3% w/w |
Key Features:
Latent reactivity for controlled curing processes
Good thermal stability (up to 150°C)
Water solubility for aqueous formulations
Low volatility for safer handling
3. Safety & Handling
| Parameter | Specification |
|---|---|
| Flash Point | >150°C |
| Skin Irritation | Mild |
| Eye Irritation | Moderate |
| Storage Conditions | Keep sealed at 15–30°C, dry |
| Shelf Life | 24 months |
| Regulatory Status | REACH compliant |
| Handling Precautions | Use gloves & goggles |
Summary
This urea-based tertiary amine combines reactivity and stability, making it valuable for epoxy curing, polymer modification, and textile applications. Its water solubility and low toxicity enhance formulation flexibility while maintaining performance.
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