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74-95-3

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Identification

Name
Dibromomethane
CAS
74-95-3
Synonyms
DBM
DIBROMOMETHANE
METHYLENE BROMIDE
METHYLENE DIBROMIDE
CH2Br2
Dibrommethan
dibromo-methan
methane,dibromo
Methane,dibromo-
Rcra waste number U068
rcrawastenumberu068
DIBROMOMETHANE, 1000MG, NEAT
DIBROMOMETHANE, 99+%
DIBROMOMETHANE, 1X1ML, MEOH, 2000UG/ML
DIBROMOMETHANE, 1X1ML, MEOH, 5000UG/ML
dibromomethane solution
Dibromomethane, 99%, stab. with 50ppm BHT
Dibromomethane (1mg/ml in Methanol) [for Water Analysis]
EINECS(EC#)
200-824-2
Molecular Formula
CH2Br2
MDL Number
MFCD00000168
Molecular Weight
173.83
MOL File
74-95-3.mol

Chemical Properties

Appearance
colourless liquid
Appearance
Methylene bromide is a colorless liquid with a sweet, pleasant odor.
mp 
-52 °C
bp 
96-98 °C(lit.)

density 
2.477 g/mL at 25 °C(lit.)

vapor density 
6.05 (vs air)

vapor pressure 
34.9 mm Hg ( 20 °C)

refractive index 
n20/D 1.541(lit.)

Fp 
96-98°C
storage temp. 
Refrigerator
Stability:
Stable. Incompatible with strong oxidizing agents, aluminium, magnesium. Reacts violently with potassium.
Water Solubility 
0.1 g/100 mL (20 ºC)
Merck 
14,6061
BRN 
969143
Uses
Organic synthesis, solvent.
CAS DataBase Reference
74-95-3(CAS DataBase Reference)
NIST Chemistry Reference
Methane, dibromo-(74-95-3)
EPA Substance Registry System
74-95-3(EPA Substance)

Safety Data

Hazard Codes 
Xn,T,F
Risk Statements 
R20:Harmful by inhalation.
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .
R11:Highly Flammable.
Safety Statements 
S24:Avoid contact with skin .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37:Wear suitable protective clothing and gloves .
S16:Keep away from sources of ignition-No smoking .
S7:Keep container tightly closed .
RIDADR 
UN 2664 6.1/PG 3

WGK Germany 
2

RTECS 
PA7350000

HazardClass 
6.1
PackingGroup 
III
HS Code 
29033990
Safety Profile
A poison. Moderately toxic by subcutaneous route. Mdly toxic by inhalation. Mutation data reported. mxtures with potassium explode on light impact. When heated to decomposition it emits toxic fumes of Br-. See also BROMIDES
Hazardous Substances Data
74-95-3(Hazardous Substances Data)

Raw materials And Preparation Products

Hazard Information

General Description
A colorless liquid with a pleasant odor. Insoluble in water and denser than water. May be toxic by ingestion. Used as a solvent and as a motor fuel.
Reactivity Profile
Halogenated aliphatic compounds, such as DIBROMOMETHANE(74-95-3), are moderately or very reactive. Reactivity generally decreases with increased degree of substitution of halogen for hydrogen atoms. Low molecular weight haloalkanes are highly flammable and can react with some metals to form dangerous products. Materials in this group are incompatible with strong oxidizing and reducing agents. Also, they are incompatible with many amines, nitrides, azo/diazo compounds, alkali metals (potassium), and epoxides.
Air & Water Reactions
Insoluble in water.
Health Hazard
INHALATION: Anesthetic effects, nausea and drunkenness. CONTACT WITH SKIN AND EYES: Skin irritation of eyes and nose.
Potential Exposure
Methylene bromide is used as a solvent and as a chemical intermediate.
Fire Hazard
Special Hazards of Combustion Products: Dissociation products generated in a fire may be irritating or toxic.
First aid
If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit
Shipping
UN2664 Dibromomethane, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
Incompatibilities
Mixture with potassium forms a shocksensitive explosive. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, sodium amide, strong acids, strong bases, alkaline earth metals, aluminum, magnesium. The substance decomposes on contact with hot surfaces producing hydrogen bromide
Waste Disposal
Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal

Material Safety Data Sheet(MSDS)

Spectrum Detail

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