Dichlorodimethyl ether, symmetrical appears as a colorless volatile liquid with a chloroform-like odor. Toxic by inhalation, skin absorption and ingestion. Dangerous fire risk - flash point below 0°F. Vapors much denser than air. Insoluble in water and denser than water. Used to make paints and varnish, and as a solvent.
颜色/状态:
Colorless liquid
气味:
Suffocating odor
溶解度:
In water, 1,020 mg/L at 25 °C
蒸汽密度:
4 (EPA, 1998) (Relative to Air)
蒸汽压力:
29.4 mm Hg at 25 °C /from experimentally derived coefficients/
IDENTIFICATION AND USE: Bis(chloromethyl) ether (BCME) is a colorless liquid. Historical uses of BCME include crosslinking of cellulose, preparation of styrene and other polymers, surface treatment of vulcanized rubber to increase adhesion, and manufacture of flame-retardant fabrics. It is used in the manufacture of plastics and ion exchange resins, and as a laboratory reagent. HUMAN STUDIES: Potential symptoms of overexposure include irritation of the eyes, skin, mucous membranes and respiratory system, as well as pulmonary congestion, edema, corneal damage, necrosis, decreased pulmonary function, coughing, dyspnea and wheezing, blood stained sputum, and bronchial secretions. A retrospective investigation of a small group of workers exposed to the compound between 1956 and 1962 revealed 6 cases of lung cancer among 18 men employed in a testing laboratory. Five of the 6 men were moderate smokers and 1 was a non-smoker. Two further cases were found among a group of 50 production workers. Five of the total 8 reported cases are stated to have been oat cell carcinomas. The exposure period ranged from 6-9 years and the latent period from first exposure to diagnosis was from 8-16 years. BCME induced unscheduled DNA synthesis and cell transformation in cultured human fibroblasts. A slight increase in the incidence of chromosomal aberrations was observed in blood lymphocytes of workers exposed to BCME during the preparation of ion-exchange resins. ANIMAL STUDIES: Exposure of rabbits for 3 min to atmosphere saturated with BCME caused milky corneal opacity and CNS depression. During inhalation of BCME in laboratory animal studies, irritation of the eyes and respiratory tract were noted as well as necrotizing bronchitis. Skin application resulted in erythema and necrosis. Increased mortality and tracheal hyperplasia were observed in rats and hamsters following multiple inhalation exposure. Carcinogenicity studies in experimental animals (mice and rats) exposed to BCME showed significantly elevated incidence of pulmonary adenomas and respiratory tumors. In mice, inhalation exposure also showed evidence of an elevated incidence of lung tumors. Incidence of pulmonary squamous cell carcinomas and esthesioneuroepitheliomas of the nose was described in a small series of rats exposed to inhalation of BCME in a concentration of 0.1 ppm. BCME was mutagenic in bacteria, but it did not cause chromosomal aberrations in bone-marrow cells of rats exposed to vapors for six months. BCME is among the most potent animal and human carcinogens known. Sufficient information is available to support a genotoxic mode of action.
CLASSIFICATION: A; human carcinogen. BASIS FOR CLASSIFICATION: Statistically significant increases in lung tumors (oat cell carcinomas) observed in six studies of exposed workers and bioassay data from rats and mice. HUMAN CARCINOGENICITY DATA: Sufficient. ANIMAL CARCINOGENICITY DATA: Sufficient.
There is sufficient evidence in humans for the carcinogenicity of bis(chloromethyl)ether. Bis(chloromethyl)ether cause/s/ cancer of the lung. There is sufficient evidence in experimental animals for the carcinogenicity of bis(chloromethyl)ether. Overall evaluation: Bis(chloromethyl) ether is carcinogenic to humans (Group 1).
来源:Hazardous Substances Data Bank (HSDB)
毒理性
致癌性证据
二氯甲醚(BCME)根据人类研究的充分致癌性证据,被认为是一种人类致癌物。
Bis(chloromethyl) ether (BCME) is known to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in humans.
MoCl5, 1a, and WCl6, 1b, activate 1,3-dioxolane at room temperature in chlorinated solvents: the compound [MoOCl3OC(H)OCH2CH2Cl}]2, 2, has been isolated from MoCl5/dioxolane. The mixed oxo-chloro species WOCl4, 1c, reacts with 1,3-dioxolane, selectively giving the coordination adduct WOCl4(κ1-C3H6O2), 3. Dimethoxymethane, CH2(OMe)2, undergoes activation including C–H bond cleavage when reacted with
Chloroacylation and bromoacylation of carbonyl compounds II. Structure of the by-products
羰基化合物的氯酰化和溴酰化II。副产品的结构
Process for halomethyl ethers of hydroxyiminomethyl quaternary pyridinium salts
申请人:Huang Der-Shing
公开号:US20060183777A1
公开(公告)日:2006-08-17
A halide salt of a 1-(hydroxyiminomethyl-1-pyridino)-3-(halomethyl)-2-oxapropane is prepared by adding a pyridinealdoxime to a bis-halomethylether in such a manner that the bis-halomethylether is maintained in excess throughout the addition. This procedure produces the halide salt of a 1-(hydroxyiminomethyl-1-pyridino)-3-(halomethyl)-2-oxapropane in high yield and purity, which facilitates its use as an intermediate in the manufacture of an asymmetrically substituted 1,3-di (1-pyridino)-2-oxapropane, a class of compounds that are generally useful antidotes to various toxic agents. A prominent member of the class is the dimethylsulfonate salt of 1-(2-hydroxyiminomethyl-1-pyridino)-3-(4-carbamoyl-1-pyridino)-2-oxapropane. The use of mercaptoalkyl-functionalized polymers is disclosed as a preferred metal ion scavenger for a final purification step in the manufacture of these compounds.
申请人:Lapto Co., Ltd. 주식회사 랩토(120120213992) Corp. No ▼ 131111-0274298BRN ▼129-86-56546
公开号:KR102279134B1
公开(公告)日:2021-07-19
일 실시예의 유기 전계 발광 소자는 제1 전극, 제2 전극, 및 제1 전극과 제2 전극 사이에 배치된 발광층을 포함하고, 발광층은 하기 화학식 1로 표시되는 화합물을 포함하여 높은 발광 효율 특성 및 개선된 수명 특성을 나타낼 수 있다. [화학식 1] (상기 화학식 1에서 각 치환기들은 발명의 상세한 설명에서 정의한 바와 같다.)
High quantum yield luminescent monomers, oligomers, and polymers, comprising benzotriazole repeating units and derivatives thereof have been discovered and utilized in optical devices and components therefor, including electroluminescent devices, light emitting devices, photoluminescent devices, organic light emitting diodes (OLEDs), OLED displays, sensors, and the like.