1-9 A-D E-G H-M N-P Q-S T-Z

DIMETHYL UREA (DİMETİL ÜRE)

DIMETHYL UREA

 

CAS NUMBER:15827-60-8 
EC NUMBER:206-896-8

 

synonyms:

sym-diméthylurée; N,N'-diméthylurée; DMU; 1,1-Dimethylharnstoff; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; 1,1-Dimethylurea; DIMETYL URE; DIMETHYL REA; 1,3-Dimethylharnstoff; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; 1,1-Diméthylurée; DIMETİL ÜRE; DIMETHYL UREA; Urea, N,N-dimethyl; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; dımethyl urea; dimetil üre; dimethyl ürea; dımethyl ure; dimtil ürea; DIMETHYL UREA; dimetily ürea; dimetil üre; DIMETİL ÜRE; DIMETHYL UREA; DIMETYL URE; DIMETHYL REA; dimethyl üre; dimetyl ürea; dimethyl üre; dımethyl urea; (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; Dimethylurea (DMU; Uses; 1,3-Dimethylurea; DIMETHYL UREA; DIMETYLURE; dimethylürea; di metil üre; La diméthylurée; diméthylurée

 


Dimethyl urea

 

 

Dimethyl urea
Skeletal formula of Dimethyl urea
Ball and stick model of Dimethyl urea
Names
IUPAC name
1,3-Dimethyl urea[1]
Identifiers
CAS Number
96-31-1 
3D model (JSmol)
Interactive image
Properties
Chemical formula
C3H8N2O
Molar mass 88.110 g·mol-1
Appearance Colorless, waxy crystals
Odor Odorless
Density 1.142 g mL-1
Melting point 104.4 °C; 219.8 °F; 377.5 K
Boiling point 269.1 °C; 516.3 °F; 542.2 K
Solubility in water
765 g L-1
Magnetic susceptibility (χ)
-55.1·10-6 cm3/mol
Thermochemistry
Std enthalpy of
formation (ΔfH⦵298)
-312.1--312.1 kJ mol-1
Std enthalpy of
combustion (ΔcH⦵298)
-2.0145--2.0089 MJ mol-1
Hazards
R-phrases (outdated) H373[1]
R22, R24/25
S-phrases (outdated) P260, P314, P501H373[1]
Flash point 157 °C (315 °F; 430 K)
Lethal dose or concentration (LD, LC):
LD50 (median dose)
4 g kg-1 (oral, rat)
Related compounds
Related ureas
Carmustine
Related compounds
Noxytiolin
1,1,3,3-Tetramethylguanidine
Metformin
Allantoic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

 

Dimethyl urea (DMU) (IUPAC systematic name: 1,3-Dimethyl urea ) is a urea derivative and used as an intermediate in organic synthesis. Dimethyl urea is a colorless crystalline powder with little toxicity.

 

Uses
Dimethyl urea is used for synthesis of caffeine, theophylline, pharmachemicals, textile aids, herbicides and others.[2] In the textile processing industry 1,3-Dimethyl urea is used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles. The estimated world production of DMU is estimated to be less than 25,000 tons.
Experimental procedure: An electrochemical cell with magnesium as the anode and galvanized steel wire as the cathode is added to a substrate (0.1 mmol, 1.0 eq.), 1,3-Dimethyl urea (0.3 mmol, 3.0 eq), tripyrrolidinophosphine oxide (1.0 mmol, 10 eq.), and 1.5 mol/L THF solution of LiBr (500 µL). The reaction mixture is added to THF (3 mL) and is purged with argon. Electrolysis is initiated at a cell ampere of 10 mA at room temperature. After full consumption of substrate, the cell is washed with diethyl ether, and solvent is removed in vacuo. To residue solution is added diethyl ether and solution of Rochelle salt, and then is stirred until two clear layers formed. The organic layer is separated, and the aqueous layer is extracted twice with diethyl ether. The combined organic layers are dried over anhydrous MgSO4. After the organics removed in vacuo, the residue is purified by short silica colum (elution: ethyl acetate) to give product. 
Description
Catalogue Number 803244
Synonyms 1,3-Dimethyl urea
Description N,N'-Dimethyl urea

 

 

Metabolite Identification
Common Name Dimethyl urea
Description Dimethyl urea belongs to the class of organic compounds known as ureas. Ureas are compounds containing two amine groups joined by a carbonyl (C=O) functional group. Dimethyl urea is an extremely weak basic (essentially neutral) compound (based on its pKa). Dimethyl urea (DMU) (IUPAC systematic name: Dimethyl urea ) is a urea derivative and used as an intermediate in organic synthesis.
Description belongs to the class of organic compounds known as ureas. Ureas are compounds containing two amine groups joined by a carbonyl (C=O) functional group.
Dimethylurea (DMU) (IUPAC systematic name: 1,3-Dimethylurea ) is a urea derivative and used as an intermediate in organic synthesis. It is a colorless crystalline powder with little toxicity. 1,3-Dimethylurea is used for synthesis of caffeine, theophylline, pharmachemicals, textile aids, herbicides and others.[2] In the textile processing industry 1,3-dimethylurea is used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles. The estimated world production of DMU is estimated to be less than 25,000 tons. N,N′-Dimethylurea (1,3-Dimethylurea), an alkyl urea derivative,[3] is a nonlinear organic material.[4] It forms needle-shaped crystals. It has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethylureas crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds. Dimethylurea is the suitable reagent used to investigate the polar structure of its crystals.[1] It may be used in the Dowex-50W ion exchange resin-promoted solvent-free synthesis of N,N′-disubstituted-4-aryl-3,4-dihydropyrimidinones. Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. 40410.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit.-Dimethylurea (1,3-Dimethylurea), an alkyl urea derivative,[3] is a nonlinear organic material.[4] Dimethylurea forms needle-shaped crystals. It has been crystallized by using ethylacetate (solvent) and heptane (precipitant) by vapor diffusion technique. Dimethylureas crystals has one molecule in each asymmetric unit. Molecules in crystal are linked by hydrogen bonds.

 

 

 

DİMETİL ÜRE
Dimetilüre bir üre türevidir ve organik sentezde bir ara madde olarak kullanılır. Toksisitesi az olan renksiz bir kristal tozdur.Çay yaprağı ve kafeinin sentezi için bir ara madde olarak ve ayrıca elyaf işleme maddelerinin üretimi için kullanılır. 
Formül: C3H8N2O

 

 

Dimetil üre Ürün Özellikleri: 
• Laboratuvar kimyasalıdır.
• Çeşitli deneylerde kullanılır.

 

 

Dimetil üre öğesinin açıklayıcı görüntüsü
kimlik
IUPAC adı 1,3-dimetilüre
görünüm renksiz kristal katı
Kimyasal özellikleri
Brüt formül Cı- 3 , H 8 K 2 O [izomerler]
Molar kütle 1 88.1084 ± 0.0037 g / mol
C% 40.9, H% 9.15, N% 31.79, O% 18.16,
Fiziksel özellikler
T ° füzyonu 104.35 ° C 2
T ° kaynama 269.05 ° C 2
Dimetil üre çözünürlük 765 gr · L -1 ( su , 21.5 ° C ) 3
Dimetil üre yoğunluk 1.142 gr · cm -3 (katı, 20 ° C ) 3
Kendiliğinden tutuşma sıcaklığı 400 ° C 3
Parlama noktası 154 ° C 3
Doymuş buhar basıncı 6 mbar ile 115 ° C 3
termokimya
Δ f H 0 gazı -221,6 kJ · mol -1 2
Δ f H 0 katı -312,1 kJ · mol -1 2
Δ fus H ° 92.1 kJ · mol -1 için 80.85 ° C 2
ekotoksikoloji
DL 50 2 gr · kg -1 (sıçan?) 4
LogP -0,49 3
Birimleri SI ve STP aksi belirtilmedikçe.
değişim Model belgelerine bakın
Dimetil üre veya 1,3-dimetil bir türevi olan üre reaktif olarak kullanılan sentetik organik .
Dimetil üre Renksiz bir kristal tozdur, çok toksik değildir.

 

 

Dimetil üre Kullanım alanları
1,3-Dimetilüre kafein , teofilin , tekstil ajanları, bazı herbisitler vb. Sentezinde kullanılır . 5 . Tekstil endüstrisinde, dimetilüre, formaldehit içermeyen kırışıklık önleyici maddelerin üretimi için bir ara madde olarak kullanılır .

 

 

Küresel dimetilüre üretiminin yılda 25.000 tondan az olduğu tahmin edilmektedir.

Ambalaj Miktarı: 
• Miktar: 100gr
Dimetil üre (DMU) (IUPAC sistematik adı: 1,3-Dimetilüre) bir üre türevidir ve organik sentezde bir ara madde olarak kullanılır.
Dimetil üre Az toksisiteye sahip renksiz bir kristal tozdur.

 

 

Kullanımları
1,3-Dimetil üre kafein, teofilin, eczacılık, tekstil yardımcıları, herbisitler ve diğerlerinin sentezi için kullanılır. [2] Tekstil işleme endüstrisinde, 1,3-dimetilüre, tekstil için formaldehit içermeyen, bakımı kolay son işlem ajanlarının üretimi için ara madde olarak kullanılır. Dünyada DMU'nun tahmini üretiminin 25.000 tondan az olduğu tahmin edilmektedir.
Deneysel prosedür: Anot olarak magnezyum ve katot olarak galvanizli çelik tel içeren bir elektrokimyasal hücre, bir substrata (0.1 mmol, 1.0 eşdeğer), 1,3-dimetil üre (0.3 mmol, 3.0 eşdeğer), tripirrolidinofosfin oksite (1.0 mmol) ilave edilir. 10 eşd.) Ve 1.5 mol / L THF LiBr çözeltisi (500 uL). Reaksiyon karışımı THF'ye (3 mL) eklenir ve argon ile temizlenir. Elektroliz, oda sıcaklığında 10 mA'lık bir hücre amperinde başlatılır. Substratın tam olarak tüketilmesinden sonra hücre, dietil eter ile yıkanır ve solvent, vakumla çıkarılır. Tortuya çözeltiye dietil eter ve Rochelle tuzu çözeltisi eklenir ve daha sonra iki berrak tabaka oluşana kadar karıştırılır. Organik katman ayrılır ve sulu katmanın özü, iki kez dietil eter ile çıkarılır. Birleştirilen organik katmanlar, susuz MgS04 üzerinde kurutulur. Organikler, vakumla çıkarıldıktan sonra tortu, ürün verecek şekilde kısa silis kolonu (elüsyon: etil asetat) ile saflaştırılır.
Açıklama
Katalog Numarası 803244
Kelimeler 1,3-dimetilüre
Tanımlama N, N'-dimetilüre

 

 

Metabolit Tanımlaması
Ortak Ad Dimetilüre
Tanım 
Dimetil üre, üre olarak bilinen organik bileşikler sınıfına aittir. Üreaz, bir karbonil (C = O) fonksiyonel grubuyla birleştirilen iki amin grubu içeren bileşiklerdir. Dimetil üre son derece zayıf bir bazik (esasen nötr) bir bileşiktir (pKa'ya dayanarak). Dimetil üre (DMU) (IUPAC sistematik adı: Dimetil üre) bir üre türevidir ve organik sentezde bir ara madde olarak kullanılır.
Tanım, üre olarak bilinen organik bileşikler sınıfına aittir. Üreaz, bir karbonil (C = O) fonksiyonel grubuyla birleştirilen iki amin grubu içeren bileşiklerdir.
Kaynama noktası: 269,1 °C
Molar kütle: 88,108 g/mol
Yoğunluk: 1,14 g/cm³

 

 

 


Diméthylurée

 

La diméthylurée ou 1,3-diméthylurée est un dérivé de l'urée qui est utilisé comme réactif en synthèse organique. C'est une poudre cristalline incolore, peu toxique.

 

Utilisation
La 1,3-diméthylurée est utilisée dans la synthèse de la caféine, de la théophylline, d'agents textile, de certains herbicides, etc. 5. Dans l'industrie textile, la diméthylurée est utilisée comme une intermédiaire pour la production d'agents anti-pli sans formaldéhyde.

 

La production mondiale de diméthylurée est estimée à moins de 25 000 tonnes par an.

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Diméthylurée
Image illustrative de l'article Diméthylurée
Identification de La diméthylurée
Nom UICPA 1,3-diméthylurée
No CAS 96-31-1
No ECHA 100.002.272
No CE 202-498-7
PubChem 7293
Apparence de La diméthylurée: solide cristallin incolore
Propriétés chimiques
Formule brute C3H8N2O [Isomères]
Masse molaire1 88,1084 ± 0,0037 g/mol
C 40,9 %, H 9,15 %, N 31,79 %, O 18,16 %,
Propriétés physiques
T° fusion 104,35 °C 2
T° ébullition 269,05 °C 2
Solubilité 765 g·l-1 (eau,21,5 °C) 3
Masse volumique 1,142 g·cm-3 (solide,20 °C) 3
T° d'auto-inflammation 400 °C 3
Point d'éclair 154 °C 3
Pression de vapeur saturante 6 mbar à 115 °C 3
La diméthylurée (DMU) (nom systématique de l'UICPA: 1,3-diméthylurée) est un dérivé de l'urée et utilisé comme intermédiaire dans la synthèse organique. C'est une poudre cristalline incolore avec peu de toxicité.

 

 

Les usages
La diméthylurée est utilisée pour la synthèse de la caféine, de la théophylline, des produits pharmaceutiques, des auxiliaires textiles, des herbicides et autres [2]. Dans l'industrie de transformation des textiles, la diméthylurée est utilisée comme intermédiaire pour la production d'agents de finition faciles à entretenir sans formaldéhyde pour les textiles. La production mondiale estimée de DMU est estimée à moins de 25 000 tonnes.
Procédure expérimentale de La diméthylurée: une cellule électrochimique avec du magnésium comme anode et du fil d'acier galvanisé comme cathode est ajoutée à un substrat (0,1 mmol, 1,0 éq.), 1,3-diméthylurée (0,3 mmol, 3,0 éq), oxyde de tripyrrolidinophosphine (1,0 mmol , 10 éq.), Et 1,5 mol / L de solution THF de LiBr (500 µL). Le mélange réactionnel est ajouté au THF (3 ml) et purgé à l'argon. L'électrolyse est initiée à un ampère cellulaire de 10 mA à température ambiante. Après consommation complète du substrat, la cellule est lavée avec de l'éther diéthylique et le solvant est éliminé sous vide. A la solution résiduelle, on ajoute de l'éther diéthylique et une solution de sel de Rochelle, puis on agite jusqu'à formation de deux couches claires. La couche organique est séparée et la couche aqueuse est extraite deux fois avec de l'éther diéthylique. Les couches organiques combinées sont séchées sur MgSO4 anhydre. Après élimination des matières organiques sous vide, le résidu est purifié par une courte colonne de silice (élution: acétate d'éthyle) pour donner le produit.
La description de La diméthylurée
Numéro de catalogue 803244
Synonymes 1,3-diméthylurée
Description N, N'-diméthylurée

 

 

Identification des métabolites
Nom commun diméthylurée
Description La diméthylurée appartient à la classe des composés organiques appelés urées. Les urées sont des composés contenant deux groupes amine joints par un groupe fonctionnel carbonyle (C = O). La diméthylurée est un composé basique (essentiellement neutre) extrêmement faible (basé sur son pKa). La diméthylurée (DMU) (nom systématique de l'UICPA: diméthylurée) est un dérivé de l'urée et utilisé comme intermédiaire dans la synthèse organique.
La description appartient à la classe des composés organiques appelés urées. Les urées sont des composés contenant deux groupes amine joints par un groupe fonctionnel carbonyle (C = O).

 

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