Dimethylolurea
Synonym(s):1,3-Bis(hydroxymethyl)urea;Dimethylolurea;DMU
- CAS NO.:140-95-4
- Empirical Formula: C3H8N2O3
- Molecular Weight: 120.11
- MDL number: MFCD00014414
- EINECS: 205-444-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-10-28 23:16:16
What is Dimethylolurea?
Chemical properties
white powder
The Uses of Dimethylolurea
In the textile industry in cotton crease- and shrink-proofing, finishing, drying, sizing; in tanning; pesticides; in photographic developers.
The Uses of Dimethylolurea
1,3-Bis(hydroxymethyl)urea is used in preparation method of insulating waterborne polyurethane dispersion coating for electronic and electrical components.
Definition
ChEBI: Oxymethurea is a member of ureas.
Production Methods
Dimethylolurea is produced industrially by the addition of 2 mol of formaldehyde per mole of urea in a stirred vessel. The solution is neutralized with triethanolamine. Urea is added with cooling, and the temperature must not exceed 40 ℃ in this slightly exothermic reaction. After a few hours, the reaction mixture is cooled to room temperature and dihydroxymethylurea crystals form upon cooling. The product is dried in a spray-drying tower.
Flammability and Explosibility
Not classified
Purification Methods
Crystallise it from aqueous 75% EtOH. [Beilstein 3 IV 107.]
Properties of Dimethylolurea
Melting point: | 125 °C (dec.)(lit.) |
Boiling point: | 224.08°C (rough estimate) |
Density | 1.34 |
refractive index | 1.4610 (estimate) |
Flash point: | 100 °C |
storage temp. | 2-8°C |
pka | 12.14±0.46(Predicted) |
form | powder to crystal |
color | White to Almost white |
Water Solubility | 150 g/L |
Merck | 14,6968 |
BRN | 1811870 |
CAS DataBase Reference | 140-95-4(CAS DataBase Reference) |
NIST Chemistry Reference | Dimethanolurea(140-95-4) |
EPA Substance Registry System | Dimethylolurea (140-95-4) |
Safety information for Dimethylolurea
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H319:Serious eye damage/eye irritation |
Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for Dimethylolurea
InChIKey | QUBQYFYWUJJAAK-UHFFFAOYSA-N |
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