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Chemical Name:
syM;(CH3NH)2CO;AKOS B029718;1.3-DiMethyl u;SYM-DIMETHYLUREA;1,3-dimethyl-ure;1,3-DIMETHYLUREA;N,N'-DIMETHYLUREA;n,n’-dimethyl-ure;Dimethylcarbamide
Molecular Formula:
Formula Weight:
MOL File:

1,3-Dimethylurea Properties

Melting point:
101-104 °C(lit.)
Boiling point:
268-270 °C(lit.)
vapor pressure 
6 hPa (115 °C)
refractive index 
1.4715 (estimate)
Flash point:
157 °C
storage temp. 
Store at RT.
H2O: 0.1 g/mL, clear, colorless
9.0-9.5 (100g/l, H2O, 20℃)
Water Solubility 
765 g/L (21.5 ºC)
CAS DataBase Reference
96-31-1(CAS DataBase Reference)
NIST Chemistry Reference
Urea, N,N'-dimethyl-(96-31-1)
EPA Substance Registry System
Urea, N,N'-dimethyl-(96-31-1)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Risk Statements  62-63-68
Safety Statements  22-24/25
WGK Germany  1
RTECS  YS9868000
Autoignition Temperature 400 °C
HS Code  29241900
Hazardous Substances Data 96-31-1(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 4000 mg/kg
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
Precautionary statements:
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P314 Get medical advice/attention if you feel unwell.
P501 Dispose of contents/container to..…

1,3-Dimethylurea price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 36574 N,N′-Dimethylurea PESTANAL , analytical standard 96-31-1 250mg $33.2 2018-11-13 Buy
Sigma-Aldrich 15450 N,N′-Dimethylurea (sym.), ≥99% (from N) 96-31-1 1kg-r $54.7 2018-11-22 Buy
TCI Chemical D0289 1,3-Dimethylurea >98.0%(GC) 96-31-1 25g $14 2018-11-22 Buy
TCI Chemical D0289 1,3-Dimethylurea >98.0%(GC) 96-31-1 500g $30 2018-11-22 Buy
Alfa Aesar B21329 N,N'-Dimethylurea, 98% 96-31-1 500g $31.7 2018-11-13 Buy

1,3-Dimethylurea Chemical Properties,Uses,Production


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


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.]

1,3-Dimethylurea Preparation Products And Raw materials

Raw materials

Preparation Products

1,3-Dimethylurea Suppliers

Global( 227)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Shenzhen Sendi Biotechnology Co.Ltd.
0755-23311925 18102838259
0755-23311925 CHINA 3218 55
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 22060 58
Dalian Richfortune Chemicals Co., Ltd
86-411-84820922, 84821539
86-411-84821380 China 362 57
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20795 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32764 55
Qingdao Hongjin Trading Co., Ltd.
0532-83657313 CHINA 113 58
career henan chemical co
+86-371-86658258 CHINA 20001 58
Jiaxing Trustworthy Import And Export Co., Ltd. +86 (573) 8203-0555 China 38 56
Shijiazhuang Kunxiangda Technology Co.,Ltd +86-311-89683399
+86-311-89683399 China 16 56
Shanghai Rolead Chemical Technology Co., Ltd. 021-69992230 / 69992220
021-69992237 China 4641 50

View Lastest Price from 1,3-Dimethylurea manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-08-06 1,3-Dimethylurea
US $1.00 / KG 1KG 98% 1 career henan chemical co

1,3-Dimethylurea Spectrum

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