ブロモジクロロメタン (1mg/mlメタノール溶液) [水質分析用] 化学特性,用途語,生産方法
外観
無色～うすい黄色, 澄明の液体
溶解性
水に難溶 (0.6735g/100ml), アルコール, エーテル等各種有機溶剤と混和。エタノールに極めて溶けやすく、水に溶けにくい。
用途
標準液調製用。
用途
試薬(トリハロメタン測定用)
使用上の注意
安定剤としてエタノールを含有するので、標準液を調製する場合はエタノールを除去するか又は含量の補正が必要である。
化学的特性
Bromodichloromethane (BDCM) is a colorless, heavy, non-burnable/non-flammable liquid. It was formerly used as a flame retardant, a solvent for fats and waxes and because
of its high density for mineral separation. Now, it is only used as a reagent or intermediate in organic chemistry. Small amounts of BDCM are also made in chemical plants for
use in laboratories or in making other chemicals. On contact with hot surfaces or flames,
BDMC decomposes forming toxic and corrosive gases, including hydrogen bromide and
hydrogen chloride and reacts with strong bases, strong oxidants, and magnesium. BDMC
is found in chlorinated drinking water as a consequence of the reaction between chlorine,
added during water treatme
使用
As a chemical intermediate for organic
synthesis and as a laboratory reagent; formerly
used as a solvent and flame retardant.
Currently, the major source of bromodichloromethane
in the environment is from its formation as a by-product during chlorination
of water.
定義
ChEBI: A one-carbon compound that is methane substituted by a bromo and two chloro groups. It occurs as a contaminant in drinking water.
一般的な説明
Clear colorless liquid.
空気と水の反応
Slightly water soluble.
反応プロフィール
BROMODICHLOROMETHANE may react with strong bases and magnesium. Incompatible with oxidizing materials .
健康ハザード
SYMPTOMS: Symptoms of exposure to BROMODICHLOROMETHANE may include irritation of the skin, eyes, mucous membranes and respiratory tract. It may also cause narcosis. Other symptoms may include nausea, dizziness and headache. It may also cause liver and kidney damage. Central nervous system effects may also occur.
火災危険
Literature sources indicate that BROMODICHLOROMETHANE is nonflammable.
安全性プロファイル
Confirmed carcinogen
with experimental carcinogenic data.
Moderately toxic by ingestion. Human
mutation data reported. When heated to
decomposition it emits very toxic fumes of
Brand Cl-. See also CHLORINATED
HYDROCARBONS, ALIPHATIC; and
BROMIDES.
発がん性
Bromodichloromethane is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals.
環境運命予測
Biological. Bromodichloromethane showed significant degradation with gradual adaptation in a
static-culture flask-screening test (settled domestic wastewater inoculum) conducted at 25 °C. At
concentrations of 5 and 10 mg/L, percent losses after 4 wk of incubation were 59 and 51,
respectively. At a substrate concentration of 5 mg/L, 8% was lost due to volatilization after 10 d
(Tabak et al., 1981).
Chemical/Physical. The estimated hydrolysis half-life in water at 25 °C and pH 7 is 137 yr
(Mabey and Mill, 1978). Reported products of hydrolysis include carbon monoxide, hydrochloric
and hydrobromic acids (Ellington et al., 1993; Kollig, 1993).
At influent concentrations of 1.0, 0.1, 0.01, and 0.001 mg/L, the GAC adsorption capacities at
pH 5.3 were 7.9, 1.9, 0.47, and 0.12 mg/g, respectively (Dobbs and Cohen, 1980).
ブロモジクロロメタン (1mg/mlメタノール溶液) [水質分析用] 上流と下流の製品情報
原材料
準備製品