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1,3-dimethylurea

CAS Number
96-31-1
EC Number
202-498-7
Chemical Formula
C3H8N2O
Molecular Weight
88.11 g/mol

Description

1,3-Dimethylurea (CAS 96-31-1 ), commonly abbreviated as DMU, is a symmetric disubstituted urea derivative used as a chemical intermediate and reagent across pharmaceutical and specialty chemical manufacturing. It functions primarily as a building block in synthesis pathways and as a component in buffering and catalytic systems. In pharmaceutical manufacturing, DMU serves as an intermediate in the synthesis of active pharmaceutical ingredients. This includes methylxanthine derivatives and heterocyclic compounds requiring a dimethylurea scaffold. Personal care formulators incorporate it into preservation systems where controlled release of antimicrobial activity is required. In biotechnology research and process chemistry, DMU is used to stabilize pH in buffered reaction media. This supports enzyme activity and cell culture conditions during various stages of chemical development. Catalyst precursor applications include its use in the preparation of nitrogen-containing ligands and coordination complexes for specialty chemical synthesis. It is a versatile reagent for modern industrial chemistry. 1,3-Dimethylurea is supplied as a white crystalline powder or granular solid. It is available in technical grade for industrial synthesis and in higher-purity grades suitable for pharmaceutical intermediate use. Specifications are aligned to USP and Ph. Eur. reference standards where required. Packaging typically ranges from kilogram-scale laboratory quantities to bulk industrial supply for large operations. Contact us for supply of 1,3-dimethylurea Request Quote

Other Names (Synonyms)

N,N'-Dimethylurea | sym-Dimethylurea | Urea, N,N'-dimethyl- | Symmetric dimethylurea | Urea, 1,3-dimethyl- | N,N'-Dimethylharnstoff | WAM6DR9I4X | DMU

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point108 °C
Boiling Point268-270 °C
Density1.142 g/cm³
Flash Point157 °C
Appearancewhite crystals
ColorWhite
FormCrystals
Water Solubility765 g/L (21.5 ºC)
Vapor Pressure6 hPa (115 °C)
Refractive Index1.4715 (estimate)
pH9.0-9.5 (100g/l, H2O, 20℃)
Log P-0.783 at 25℃

Safety & Handling

Warning
GHS08· Health Hazard

Hazard Statements

H373May causes damage to organs through prolonged or repeated exposure

Precautionary Statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.
P319Get medical advice/attention if you feel unwell.
P501Dispose of contents/container in accordance with local regulations.

Trade & Regulatory

HS Code29241900
Storage Class11 - Combustible Solids
WGK (Germany)1