Description
ChemicalBook > CAS DataBase List > 1,3-Dimethylurea

1,3-Dimethylurea

Description
Product Name
1,3-Dimethylurea
CAS No.
96-31-1
Chemical Name
1,3-Dimethylurea
Synonyms
syM;N,N'-DIMETHYLUREA;(CH3NH)2CO;AKOS B029718;1.3-DiMethyl u;1,3-dimethyl-ure;SYM-DIMETHYLUREA;1,3-DIMETHYLUREA;n,n’-dimethyl-ure;Dimethylcarbamide
CBNumber
CB6266530
Molecular Formula
C3H8N2O
Formula Weight
88.11
MOL File
96-31-1.mol
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1,3-Dimethylurea Property

Melting point:
101-104 °C(lit.)
Boiling point:
268-270 °C(lit.)
Density 
1.142
vapor pressure 
6 hPa (115 °C)
refractive index 
1.4715 (estimate)
Flash point:
157 °C
storage temp. 
Store below +30°C.
solubility 
H2O: 0.1 g/mL, clear, colorless
pka
14.57±0.46(Predicted)
form 
Crystals
color 
White
PH
9.0-9.5 (100g/l, H2O, 20℃)
Water Solubility 
765 g/L (21.5 ºC)
BRN 
1740672
InChIKey
MGJKQDOBUOMPEZ-UHFFFAOYSA-N
LogP
-0.783 at 25℃
CAS DataBase Reference
96-31-1(CAS DataBase Reference)
NIST Chemistry Reference
Urea, N,N'-dimethyl-(96-31-1)
EPA Substance Registry System
1,3-Dimethylurea (96-31-1)
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Safety

Risk Statements 
62-63-68
Safety Statements 
22-24/25
WGK Germany 
1
RTECS 
YS9868000
10-21
Autoignition Temperature
400 °C
TSCA 
Yes
HS Code 
29241900
Hazardous Substances Data
96-31-1(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 4000 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H373May cause damage to organs through prolonged or repeated exposure

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P314Get medical advice/attention if you feel unwell.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.03244
Product name
N,N′-Dimethylurea
Purity
for synthesis
Packaging
100g
Price
$53.6
Updated
2024/03/01
Sigma-Aldrich
Product number
8.03244
Product name
N,N′-Dimethylurea
Purity
for synthesis
Packaging
1kg
Price
$88.1
Updated
2024/03/01
Sigma-Aldrich
Product number
36574
Product name
N,N′-Dimethylurea
Purity
PESTANAL , analytical standard
Packaging
250mg
Price
$57
Updated
2024/03/01
Sigma-Aldrich
Product number
15450
Product name
N,N′-Dimethylurea
Purity
(sym.), ≥99% (from N)
Packaging
1kg
Price
$71.6
Updated
2024/03/01
TCI Chemical
Product number
D0289
Product name
1,3-Dimethylurea
Purity
>98.0%(GC)
Packaging
25g
Price
$16
Updated
2024/03/01
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1,3-Dimethylurea Chemical Properties,Usage,Production

Description

1, 3-Dimethylurea is a urea derivative and used as an intermediate in organic synthesis. It is a colorless crystalline powder with little toxicity. It is also used for synthesis of caffeine, pharmachemicals, textile aids, herbicides and other. In the textile processing industry 1,3-dimethylurea is used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles. In the Swiss Product Register there are 38 products containing 1,3-dimethylurea, among them 17 products intended for consumer use. Product types are e.g. paints and cleaning agents. The content of 1,3-dimethylurea in consumer products is up to 10 % (Swiss Product Register, 2003). Use in cosmetics has been proposed, but there is no information available as to its actual use in such applications.

Chemical Properties

white crystals

Uses

N,N′-Dimethylurea can be used:

  • As a starting material to synthesize N,N′-dimethyl-6-amino uracil.
  • In combination with β-cyclodextrin derivatives, to form low melting mixtures (LMMs), which can be used as solvents for hydroformylation and Tsuji-Trost reactions.
  • To synthesize N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones via Biginelli condensation under solvent-free conditions.

Definition

ChEBI: A member of the class of ureas that is urea substituted by methyl groups at positions 1 and 3.

General Description

Colorless crystals.

Air & Water Reactions

Water soluble.

Reactivity Profile

1,3-Dimethylurea is an amide. Amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).

Health Hazard

ACUTE/CHRONIC HAZARDS: When heated to decomposition 1,3-Dimethylurea emits toxic fumes.

Fire Hazard

Flash point data for 1,3-Dimethylurea are not available; 1,3-Dimethylurea is probably combustible.

Safety Profile

Moderately toxic by intraperitoneal route. Experimental teratogenic and reproductive effects. Human mutation data reported. When heated to decomposition it emits toxic fumes of NOx

Purification Methods

Crystallise the urea from acetone/diethyl ether by cooling in an ice bath. Also crystallise it from EtOH and dry it at 50o/5mm for 24hours [Bloemendahl & Somsen J Am Chem Soc 107 3426 1985]. [Beilstein 4 IV 207.]

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1,3-Dimethylurea Suppliers

TCI Chemicals (India) Pvt. Ltd.
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View Lastest Price from 1,3-Dimethylurea manufacturers

Jinan Finer Chemical Co., Ltd
Product
1,3-Dimethylurea 96-31-1
Price
US $0.00/Kg/Drum
Min. Order
1KG
Purity
99%
Supply Ability
2000mt/year
Release date
2021-07-16
Hebei Zhuanglai Chemical Trading Co Ltd
Product
1,3-Dimethylurea 96-31-1
Price
US $10.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20 ton
Release date
2024-12-13
Wuhan Circle Star Chem-medical Technology Co.,Ltd
Product
1,3-Dimethylurea 96-31-1
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
98
Supply Ability
1000
Release date
2024-12-26

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