7450-63-7

Basic information

• Product Name: Carbamic acid,N,N'-(methylenedi-4,1-phenylene)bis-, C,C'-dimethyl ester
• Synonyms: Carbamicacid, (methylenedi-4,1-phenylene)bis-, dimethyl ester (9CI); Carbanilic acid,4,4'-methylenedi-, dimethyl ester (6CI,7CI,8CI);(Methylenedi-4,1-phenylene)bis[carbamic acid] dimethyl ester;4,4'-Bis(carbomethoxyamino)diphenylmethane; 4,4'-Methylenebis(phenylcarbamicacid methyl ester); Dimethyl 4,4'-methylenebis(phenylcarbamate); Dimethyl4,4'-methylenediphenylenedicarbamate; Dimethyldiphenylmethane-4,4'-dicarbamate; Diphenylmethane-4,4'-di(methylurethane); NSC215914
• CAS NO: 7450-63-7
• Molecular Formula: C₁₇H₁₈N₂O₄
• Molecular Weight: 314.3358
• Mol File: 7450-63-7.mol
• Article Data: 32

Chemical Properties

• Melting Point: 178.5-179.5 °C
• Boiling Point: 393°C at 760 mmHg
• Flash Point: 191.5°C
• Appearance: /
• Density: 1.268g/cm³
• Vapor Pressure: 2.2E-06mmHg at 25°C
• Refractive Index: 1.625
• Storage Temp.: 2-8°C
• PKA: 13.48±0.70(Predicted)
• CAS DataBase Reference: Carbamic acid,N,N'-(methylenedi-4,1-phenylene)bis-, C,C'-dimethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Carbamic acid,N,N'-(methylenedi-4,1-phenylene)bis-, C,C'-dimethyl ester(7450-63-7)
• EPA Substance Registry System: Carbamic acid,N,N'-(methylenedi-4,1-phenylene)bis-, C,C'-dimethyl ester(7450-63-7)

Safety Data

• Hazardous Substances Data: 7450-63-7(Hazardous Substances Data)

Usage

General Description

The chemical "Carbamic acid,N,N'-(methylenedi-4,1-phenylene)bis-, C,C'-dimethyl ester" is a compound with the molecular formula C13H18N2O4. It is also known as dimethyl 4,4'-methylenebis(3-methylphenylcarbamate) and is commonly used as a carbamate pesticide. Its main application is as an insecticide and acaricide to control pests in agricultural settings. It is a white solid that is soluble in organic solvents and has low solubility in water. This chemical is considered to be moderately toxic and care must be taken when handling it to avoid exposure to skin and inhalation.

InChI:InChI=1/C17H18N2O4/c1-22-16(20)18-14-7-3-12(4-8-14)11-13-5-9-15(10-6-13)19-17(21)23-2/h3-10H,11H2,1-2H3,(H,18,20)(H,19,21)

Upstream product

• 101-77-9 4,4'-diamino diphenyl methane 
• 616-38-6 carbonic acid dimethyl ester 
• 67-56-1 methanol 
• 201230-82-2 carbon monoxide 
• 50-00-0 formaldehyd 
• 2603-10-3 N-phenyl methyl carbamate 
• 107-31-3 Methyl formate 
• 79-22-1 methyl chloroformate 
• 124-38-9 carbon dioxide 
• 681-84-5 tetramethylorthosilicate 
• 1067-55-6 dibutyldimethoxytin 
• 110-88-3 1,3,5-Trioxan 
• 2597-44-6 formyl radical 
• 1817-74-9 bis(4-nitrophenyl)methane 

Downstream Products

• 101-68-8 di(4-isocyanatophenyl)methane 
• 37144-79-9 [4-(4-Isocyanato-benzyl)-phenyl]-carbamic acid methyl ester 
• 122886-55-9 4,4'-bis(octylureido)diphenylmethane 

Relevant articles and documents

Catalytic synthesis of methylene diphenyl dicarbamate from methyl phenyl carbamate and trioxane over sulfuric acid catalyst

Methylene diphenyl dicarbamate (MDC) was synthesized from methyl phenyl carbamate (MPC) and trioxane using sulfuric acid (H2SO4) as catalyst. The effects of reaction temperature, reaction time, molar ratio of reactants and the content of catalyst have been studied in details. The results showed that H2SO4 exhibited high catalytic activity with the merits of moderate reaction velocity. Under the conditions of n(MPC)/n(trioxane) = 3:1, reaction temperature of 95°C, reaction time of 3.5 h and 30% H2SO4, the conversion of MPC reached 99.0% with the selectivity of MDC 81.6%. Moreover, the H2SO4 catalyst was reused five times without obviously activity decrease. Based on the identification of byproducts, a possible reaction mechanism was proposed. Higher Education Press and Springer-Verlag Berlin Heidelberg 2010.

Montmorillonite K30 Supported Tungstophosphoric Acid as an Efficient Catalyst for Condensation Reaction of Methyl N-phenylcarbamate for Generating Diurethane

Methylene diphenyl-4,4′-dicarbamate (MDC) was prepared via condensation reaction of methyl N-phenyl carbamate (MPC) and formaldehyde (HCHO) over montmorillonite K30 supported tungstophosphoric acid (TPA/K30) as an effective catalyst. A 26.2?wt.% TPA/K30 exhibited the highest product yield (75.5%) under a mild reaction temperature of 90?°C for 4?h at the molar ratio of MPC/HCHO = 4. Pyridine FTIR study indicates that Br?nsted and Lewis acid sites in the TPA/K30 were found to be beneficial for achieving an excellent yield of MDC. Furthermore, the TPA/K30 could be reused at least four runs without significant loss in the original activity. Graphic Abstract: [Figure not available: see fulltext.].

METHOD FOR PRODUCING CARBAMATE

PROBLEM TO BE SOLVED: To provide a method that can produce carbamate with high yield and high selectivity, and excellent economical efficiency, using more different kinds of amines. SOLUTION: A method for producing carbamate has a reaction step where, in the presence of calcium carbide and potassium carbonate, a reaction is induced among amine, methanol, and carbon dioxide. The reaction step is preferably performed at a temperature of 165-180°C. The reaction step is preferably performed at a carbon dioxide pressure of 3-5 MPa. The reaction step is preferably performed using an acetonitrile solvent. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2021,JPOandINPIT