Merck

270997

Sigma-Aldrich

二氯甲烷

anhydrous, ≥99.8%, contains 40-150 ppm amylene as stabilizer

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别名:
DCM, 亚甲基氯
Empirical Formula (Hill Notation):
CH2Cl2
CAS号:
分子量:
84.93
Beilstein:
1730800
EC 号:
MDL编号:
PubChem化学物质编号:
NACRES:
NA.21

等级

anhydrous

质量水平

Agency

suitable for EPA 1613

蒸汽密度

2.9 (vs air)

蒸汽压

24.45 psi ( 55 °C)
6.83 psi ( 20 °C)
6.86 psi ( 20 °C)

检测方案

≥99.8%

形式

liquid

自燃温度

1223 °F

包含

40-150 ppm amylene as stabilizer

expl. lim.

22 %

technique(s)

gas chromatography (GC): suitable

杂质

≤0.001% water
≤0.005% water (100 mL pkg)

蒸发残留物

<0.0005%

折射率

n20/D 1.424 (lit.)

bp

39.8-40 °C (lit.)

mp

−95 °C (lit.)

密度

1.325 g/mL at 25 °C (lit.)

SMILES string

ClCCl

InChI

1S/CH2Cl2/c2-1-3/h1H2

InChI key

YMWUJEATGCHHMB-UHFFFAOYSA-N

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此商品
2423332222439223
Dichloromethane anhydrous, &#8805;99.8%, contains 40-150&#160;ppm amylene as stabilizer

Sigma-Aldrich

270997

二氯甲烷

-
Dichloromethane puriss., meets analytical specification of Ph.&nbsp;Eur., NF, &#8805;99% (GC)

Sigma-Aldrich

24233

二氯甲烷

Essential Grade
Dichloromethane puriss. p.a., ACS reagent, reag. ISO, &#8805;99.9% (GC)

Sigma-Aldrich

32222

二氯甲烷

Essential Grade
Dichloromethane suitable for HPLC, &#8805;99.9%, contains 40-150&#160;ppm amylene as stabilizer

Sigma-Aldrich

439223

二氯甲烷

-
vapor density

2.9 (vs air)

vapor density

2.9 (vs air)

vapor density

2.9 (vs air)

vapor density

2.9 (vs air)

vapor pressure

24.45 psi ( 55 °C), 6.83 psi ( 20 °C), 6.86 psi ( 20 °C)

vapor pressure

24.45 psi ( 55 °C), 6.83 psi ( 20 °C)

vapor pressure

24.45 psi ( 55 °C), 6.83 psi ( 20 °C)

vapor pressure

24.45 psi ( 55 °C), 6.83 psi ( 20 °C)

assay

≥99.8%

assay

≥99% (GC)

assay

≥99.9% (GC)

assay

≥99.9%

form

liquid

form

liquid

form

liquid

form

liquid

autoignition temp.

1223 °F

autoignition temp.

1223 °F

autoignition temp.

1223 °F

autoignition temp.

1223 °F

一般描述

二氯甲烷是一种氯化有机溶剂,易随时间降解。添加戊烯作为稳定剂可抑制其降解。
对二氯甲烷作为二吡啶-氧化铬(VI)的溶剂介质进行了测试。据报道,溶解度为12.5 g/100 ml。研究了活性炭载体上TiO2负载量对二氯甲烷光分解的作用。

应用

二氯甲烷可用于气相色谱法(GC)定量检测草食性动物(舞毒蛾)诱导的蓝莓挥发物。
二氯甲烷可用作使用二吡啶-氧化铬(VI)氧化伯醇和仲醇的溶剂。悬浮于DCM中的高氯酸锂是醛与甲硅烷基乙烯酮缩醛进行Mukaiyama醇醛缩合反应的有效介质。DCM也可用作通过锂-溴交换反应由2,6-二溴吡啶合成2-溴-6-硫代吡啶的溶剂。

象形图

Exclamation markHealth hazard

警示用语:

Warning

危险分类

Carc. 2 - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

靶器官

Central nervous system

储存分类代码

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 2

闪点(°F)

does not flash

闪点(°C)

does not flash

个人防护装备

Eyeshields, Faceshields, Gloves


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Efficient Preparation of 2-Bromo-6-lithiopyridine via Lithium? Bromine Exchange in Dichloromethane
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