dimethyl urea

Description

dimethyl urea · CAS 1320-50-9 · C3H8N2O. UNII WAM6DR9I4X. Boiling Point: 514 to 518 °F at 760 mmHg (NTP, 1992); Boiling Point: 268-270 °C; Boiling Point: 269.00 °C. @ 760.00 mm Hg.

Identification

CAS Registry Number	1320-50-9
PubChem CID	7293
Molecular formula	C3H8N2O
IUPAC name	1,3-dimethylurea
UNII (FDA)	WAM6DR9I4X

Computed Descriptors

Molecular Weight	88.11
XLogP3	-0.5
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	88.063662883
Monoisotopic Mass	88.063662883
Topological Polar Surface Area	41.1
Heavy Atom Count	6
Formal Charge	0

Physical & Chemical Properties

Boiling Point	514 to 518 °F at 760 mmHg (NTP, 1992)
Boiling Point	268-270 °C
Boiling Point	269.00 °C. @ 760.00 mm Hg
Melting Point	226 °F (NTP, 1992)
Melting Point	108 °C
Melting Point	108.00 °C. @ 760.00 mm Hg
Melting Point	102-107 °C
Flash Point	154 °C
Density	1.142
Density	1.1 g/cm³

Physical description & handling notes

• N,n'-dimethylurea appears as colorless crystals. (NTP, 1992)
• Dry Powder
• Colorless solid; [Hawley] Sheet; [Alfa Aesar MSDS] Colorless powder; [OECD SIDS: 1,3-Dimethylurea - 2003]
• Solid
• COLOURLESS-TO-WHITE CRYSTALLINE POWDER.
• RHOMBIC BIPYRAMIDAL CRYSTALS FROM CHLOROFORM-ETHER

Regulatory Status

GHS notification summary	98.8% (169 / 171)

GHS Hazard Classification

GHS notification summary	98.8% (169 / 171)
Reported hazard statements	H373

Documented Uses

• Used in pharmaceutical manufacturing; [Hawley] Used as an intermediate to make caffeine, pharmachemicals, textile aids, herbicides, paints, and cleaning products; [OECD SIDS: 1,3-Dimethylurea - 2003]
• Not Known or Reasonably Ascertainable
• Information on 2 consumer products that contain Dimethyl Urea in the following categories is provided:
• All Other Basic Organic Chemical Manufacturing

Synonyms

1,3-DIMETHYLUREA; N,N'-Dimethylurea; 96-31-1; sym-Dimethylurea; Urea, N,N'-dimethyl-; Symmetric dimethylurea; Urea, 1,3-dimethyl-; N,N'-Dimethylharnstoff; DTXSID5025156; WAM6DR9I4X; NSC-14910; DTXCID605156; CHEBI:80472; RefChem:72748; 202-498-7; Dimethylurea

Frequently Asked Questions

What are the CAS number and molecular formula of dimethyl urea?

CAS 1320-50-9; molecular formula C3H8N2O; molecular weight — g/mol.

What other names is dimethyl urea known by?

1,3-DIMETHYLUREA, N,N'-Dimethylurea, 96-31-1, sym-Dimethylurea, Urea, N,N'-dimethyl-, Symmetric dimethylurea.

Is dimethyl urea classified as hazardous?

98.8% of GHS notifications report no hazard classification (169 of 171).

What are the key physical properties of dimethyl urea?

Boiling Point: 514 to 518 °F at 760 mmHg (NTP, 1992); Boiling Point: 268-270 °C; Boiling Point: 269.00 °C. @ 760.00 mm Hg; Melting Point: 226 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.