Merck
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270997

Sigma-Aldrich

Dichloromethane

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

Synonym(s):
DCM, Methylene chloride
Empirical Formula (Hill Notation):
CH2Cl2
CAS Number:
Molecular Weight:
84.93
Beilstein:
1730800
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

anhydrous

Quality Level

vapor density

2.9 (vs air)

vapor pressure

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

assay

≥99.8%

form

liquid

autoignition temp.

1223 °F

contains

40-150 ppm amylene as stabilizer

expl. lim.

22 %

technique(s)

gas chromatography (GC): suitable

impurities

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

evapn. residue

<0.0005%

refractive index

n20/D 1.424 (lit.)

bp

39.8-40 °C (lit.)

mp

−97 °C (lit.)

density

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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General description

Dichloromethane has been tested as a solvent medium for the dipyridine-chromium(VI) oxide. Solubility was reported to be 12.5g/100ml. Role of quantity of TiO2 loading on activated carbon support employed in the photodecomposition of dichloromethane has been investigated.
Dichloromethane is a chlorinated organic solvent that is susceptible to degradation with time. This can be suppressed by adding amylene as a stabilizer.

Application

Dichloromethane has been used for the quantification of herbivore (gypsy moth) induced blueberry volatiles by gas chromatography (GC).
Dichloromethane may be used as a solvent for the oxidation of primary and secondary alcohols using dipyridine-chromium(VI) oxide. Lithium perchlorate suspended in DCM is an effective medium for Mukaiyama aldol reactions of aldehydes with silyl ketene acetal. DCM may also be used as solvent for the synthesis of 2-bromo-6-lithiopyridine from 2,6-dibromopyridine via lithium-bromine exchange reaction.

Packaging

100, 12×100 mL in Sure/Seal™
1, 6×1, 2, 4×2 L in Sure/Seal™
18 L in Pure-Pac™ 1
20 L in Pure-Pac™ 2
200 L in Pure-Pac™ 1

Pictograms

Exclamation markHealth hazard

Signal Word

Warning

Hazard Statements

Hazard Classifications

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

Target Organs

Central nervous system

Storage Class Code

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

WGK

WGK 2

Flash Point(F)

does not flash

Flash Point(C)

does not flash

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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