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D41686

Dibromomethane

Name: Dibromomethane
Brand: ALDRICH

99%

Synonym(s):

Methylene bromide

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About This Item

Empirical Formula (Hill Notation):

CH₂Br₂

CAS Number:

74-95-3

Molecular Weight:

173.83

UNSPSC Code:

12352100

NACRES:

NA.22

PubChem Substance ID:

24893828

EC Number:

200-824-2

Beilstein/REAXYS Number:

969143

MDL number:

MFCD00000168

Assay:

99%

Form:

liquid

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Properties

vapor density

6.05 (vs air)

Quality Level

200

vapor pressure

34.9 mmHg ( 20 °C)

assay

99%

form

liquid

refractive index

n20/D 1.541 (lit.)

bp

96-98 °C (lit.)

mp

−52 °C (lit.)

density

2.477 g/mL at 25 °C (lit.)

SMILES string

BrCBr

InChI

1S/CH2Br2/c2-1-3/h1H2

InChI key

FJBFPHVGVWTDIP-UHFFFAOYSA-N

Description

Application

Dibromomethane may be used for the cyclopropanation of alkenes via Simmons-Smith type reaction. It may also be used in a novel methodology for the preparation of reaction intermediates such as α-substituted acroleins, α-methylene esters, α-keto esters, α-methylene lactones, α-methylene lactams, and α-keto lactones.

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pictograms

GHS07

signalword

Warning

hcodes

H332,H412

pcodes

P261 - P271 - P273 - P304 + P340 + P312 - P501

Hazard Classifications

Acute Tox. 4 Inhalation - Aquatic Chronic 3

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Information

危险化学品

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Dibromomethane as one-carbon source in organic synthesis: microwave-accelerated ?-methylenation of ketones with dibromomethane and diethylamine.

Hon Y, et. Al.

Tetrahedron, 59(9), 1509-1520 (2003)

Dibromomethane as one-carbon source in organic synthesis: total synthesis of (?)-and (?)-methylenolactocin.