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HomeProduct name listDibutylurea

Dibutylurea

  • CAS NO.:1792-17-2
  • Empirical Formula: C9H20N2O
  • Molecular Weight: 172.27
  • MDL number: MFCD00015229
  • EINECS: 217-258-7
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-19 20:33:22
Dibutylurea Structural

What is Dibutylurea?

Chemical properties

white to pink or light beige crystalline powder

The Uses of Dibutylurea

N,N'-Dibutylurea is a degradation product of Benomyl, the active ingredient in Benlate fungicides.

The Uses of Dibutylurea

N,N''-Dibutylurea is a degradation product of Benomyl, the active ingredient in Benlate fungicides.

Preparation

The reactions under CO2 pressured conditions were carried out in a stainless steel reactor (SUS 304, 30 mL, TVS-5 type). Thus, butylamine (2.9 g, 40 mmol), Ph3SbO (370 mg, 1.0 mmol), P4S10 (890 mg, 2.0 mmol), and benzene (20 mL) were charged into the reactor, and then CO2 was introduced at a pressure of 4.9 MPa (50 kg cm-2, ca. 65 mmol) at room temperature. The reactor was heated at 80 ℃ in a temperature-regulated incubator for 12 h. When a reaction temperature higher than 100 ℃ was necessary, an oil bath was used. After the heating, the reactor was cooled and carefully decompressed. The contents were treated with hot benzene (3×20 mL) and filtered to remove an insoluble residue containing the catalyst and phosphoric acid derivatives. The collected benzene solution was then concentrated to dryness in vacuo with cooling. Pure 1,3-dibutylurea was isolated by recrystallization from ligroin (yield 2.99 g, 88%).

Synthesis Reference(s)

Synthetic Communications, 21, p. 1923, 1991 DOI: 10.1080/00397919108021783

Properties of Dibutylurea

Melting point: 65-75 °C
Boiling point: 115°C 0,03mm
Density  0.9845 (rough estimate)
refractive index  1.5800 (estimate)
Flash point: 115°C/0.03mm
storage temp.  Sealed in dry,Room Temperature
solubility  Chloroform (Slightly), Methanol (Slightly)
form  Solid
pka 14.44±0.46(Predicted)
color  White to Off-White
BRN  1704165
CAS DataBase Reference 1792-17-2(CAS DataBase Reference)
NIST Chemistry Reference 1,3-Dibutylurea(1792-17-2)
EPA Substance Registry System N,N'-Dibutylurea (1792-17-2)

Safety information for Dibutylurea

Computed Descriptors for Dibutylurea

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