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HomeProduct name listDimethylolurea

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: 2024-11-19 23:02:33
Dimethylolurea Structural

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)
ghs
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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