Dibromomethane

Basic Information

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CAS Number

74-95-3

Molecular Formula

CH2Br2

Molecular Weight

173.83 g/mol

Chemical Classification

Water Treatment Chemicals Disinfectants Chlorine Compounds

Basic Physical Properties

Melting Point

−52 °C

Boiling Point

96-98 °C

Density

2.477 g/mL at 25 °C

Water Solubility

0.1 g/100 mL (20 ºC)

Flash Point

96-98°C

Solubility

11.7g/l

Refractive Index

n20/D 1.541(lit.)

Vapor Pressure

34.9 mmHg ( 20 °C)

SMILES

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BrCBr

InChI

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

InChIKey

FJBFPHVGVWTDIP-UHFFFAOYSA-N

LogP

1.7337

Topological Polar Surface Area

0.0 Å²

Hydrogen Bond Donor/Acceptor

0 / 0

Complexity

2.8

Safety Information

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GHS Hazard Pictograms

H225

H301

H311

H331

H370

Hazard Statement

H225 Highly Flammable liquid and vapor
Flammable liquids

H301 Toxic if swallowed
Acute toxicity, oral

H311 Toxic in contact with skin
Acute toxicity, dermal

H331 Toxic if inhaled
Acute toxicity, inhalation

H370 Causes damage to organs
Specific target organ toxicity, single exposure

Hazard Class

Class 6.1 Class 6.1

Stability

Stable. Incompatible with strong oxidizing agents, aluminium, magnesium. Reacts violently with potassium.

Sensitiveness

Sensitive to light and air

Synonyms & References

English

Dibromomethane
DBM
METHYLENE BROMIDE
METHYLENE DIBROMIDE
CH2Br2
Dibrommethan
dibromo-methan
methane,dibromo
Methane,dibromo-
Rcra waste number U068
DIBROMOMETHANE, 1000MG, NEAT
dibromomethane solution
Dibromomethaneneat
dibromo-methane
dibromomethylene

MDL Number

MFCD00000168

Customs Code

2903399010

FAQ

What are the physical and chemical properties of Dibromomethane (CAS: 74-95-3)?

Dibromomethane (CAS: 74-95-3) is a colorless, non-flammable liquid with a slightly sweet odor. It has a molecular weight of 187.93 g/mol. It is slightly soluble in water and highly soluble in organic solvents. Dibromomethane is reactive towards bases and reducing agents. It is a good solvent for fats and waxes.

How is Dibromomethane (CAS: 74-95-3) typically synthesized?

Dibromomethane (CAS: 74-95-3) is typically synthesized by the reaction of methanol with bromine in the presence of a catalyst such as sulfuric acid. The reaction is exothermic, and the yield is around 80-90%. The reaction is selective, and no significant by-products are formed.

What industries use Dibromomethane (CAS: 74-95-3)?

Dibromomethane (CAS: 74-95-3) is used in various industries including pharmaceuticals, where it is used as a solvent and intermediate in the synthesis of drugs. It is also used in the polymer industry as a solvent for waxes, resins, and oils. Additionally, it is used in the production of sensors and semiconductors due to its ability to dissolve a wide range of organic materials.

What precautions should be taken when handling Dibromomethane (CAS: 74-95-3)?

When handling Dibromomethane (CAS: 74-95-3), it is important to wear appropriate personal protective equipment (PPE) such as gloves, safety goggles, and a lab coat. It should be handled in a well-ventilated area or a fume hood to avoid inhalation. Spills should be cleaned up using absorbent materials and disposed of according to local regulations. Refer to the Material Safety Data Sheet (MSDS) for detailed safety information.