1,3-Dimethyl-1,3-diphenylurea

1,3-Dimethyl-1,3-diphenylurea 속성

1,3-Dimethyl-1,3-diphenylurea C화학적 특성, 용도, 생산

화학적 성질

Centralite II, also known as 1,3-Dimethyl-1,3-diphenylurea, is a white to grey crystalline powder that is soluble in water, alcohol, acetone, and chloroform. This substance is commonly used as a burning rate moderator and stabilizer for smokeless powder, as well as a plasticizer for celluloid.

용도

Detection of Methyl Centralite (MC) as gunshot residues (GSR) has been developed.

개요

1,3-Dimethyl-1,3-diphenylurea for Stabilizer and propellant, and production of intermediates of organic chemicals.

용도

1,3-Dimethyl-1,3-diphenylurea (methyl centralite) is a stabilizer in different types of ammunition. This compound is organic gunshot residue. It is the characteristic compound for which forensic analysts test determining if a person has discharged a firearm[1-2].

제조 방법

1,3-Dimethyl-1,3-diphenylurea can be synthesized through the reaction of methylaniline and phosgene.

주요 응용

Centralite II can be used as a stabilizer for smokeless powder, explosives, nitrates and smokeless fuels, as well as intermediates for fine chemicals.

Synthesis

To a 10 mL Schlenk tube equipped with a magnetic stirring bar was charged with arylcarbamoyl chlorides (0.2 mmol, 1.0 equiv), and KHCO3 (40 mg, 0.4 mmol), and then Pd(PPh3)4 (0.01 mmol, 11.56 mg) were added. Finally, 1,4-dioxane (1.0 mL) was added to the mixture via syringe at room temperature under N2. The tube was sealed and put into a preheated oil bath a 100 °C for 48 h. The mixture was cooled to room temperature, quenched with water (5 mL), and diluted with ethyl acetate (5 mL). The layers were separated, and the aqueous layer was extracted with 2 × 5 mL of ethyl acetate. The combined organic extracts were dried over anhydrous sodium sulfate, filtered, and concentrated in vacuo. The crude product of 1,3-dimethyl-1,3-diphenylurea was purified by flash chromatography on silica gel (H), using 30-35% ethyl acetate/petroleum ether as the eluent.

저장

Store in original tightly closed containers in a dry, cool and well-ventilated area.

1,3-Dimethyl-1,3-diphenylurea 준비 용품 및 원자재

원자재

준비 용품

1,3-Dimethyl-1,3-diphenylurea 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Chongqing Hesheng Longgang Technology Co. Ltd.	+86-19112191161 +86-18108377873	jieli@hslg-tech.com	China	16	58
Shandong Juchuang Chemical Co., LTD	+86-18885615001 +86-18885615001	admin@juchuangchem.com	China	387	58
Shanghai Daken Advanced Materials Co.,Ltd	+86-371-66670886	info@dakenam.com	China	15933	58
Hangzhou FandaChem Co.,Ltd.	008657128800458; +8615858145714	fandachem@gmail.com	China	9348	55
.GZ HONESTCHEM CO.,LTD	+86-15013270415	honestchemical@foxmail.com	China	247	58
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28180	58
Shandong chuangyingchemical Co., Ltd.	18853181302	sale@chuangyingchem.com	CHINA	5909	58
Shanghai Longyu Biotechnology Co., Ltd.	+8615821988213	info@longyupharma.com	China	2531	58
Fuxin Pharmaceutical	+86-021-021-50872116 +8613122107989	contact@fuxinpharm.com	China	10297	58
SIMAGCHEM CORP	+86-13806087780	sale@simagchem.com	China	17367	58

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