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Dibromomethane

Product Name
Dibromomethane
CAS No.
74-95-3
Chemical Name
Dibromomethane
Synonyms
DBM;CH2Br2;METHYLENE BROMIDE;1,1-dibroMoMethane;Dibrommethan;DIBROMOMETHANE;dibromo-methan;methane,dibromo;Methane,dibromo-;Dibromomethane >
CBNumber
CB7854206
Molecular Formula
CH2Br2
Formula Weight
173.83
MOL File
74-95-3.mol
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Dibromomethane Property

Melting point:
-52 °C
Boiling point:
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.)
Flash point:
96-98°C
storage temp. 
Store below +30°C.
solubility 
11.7g/l
form 
Liquid
color 
Clear colorless to slightly brown
Water Solubility 
0.1 g/100 mL (20 ºC)
Merck 
14,6061
BRN 
969143
Dielectric constant
6.7(10℃)
Stability:
Stable. Incompatible with strong oxidizing agents, aluminium, magnesium. Reacts violently with potassium.
CAS DataBase Reference
74-95-3(CAS DataBase Reference)
NIST Chemistry Reference
Methane, dibromo-(74-95-3)
EPA Substance Registry System
Dibromomethane (74-95-3)
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Safety

Hazard Codes 
Xn,T,F
Risk Statements 
20-52/53-39/23/24/25-23/24/25-11
Safety Statements 
24-61-45-36/37-16-7
RIDADR 
UN 2664 6.1/PG 3
WGK Germany 
2
RTECS 
PA7350000
TSCA 
Yes
HS Code 
2903 39 15
HazardClass 
6.1
PackingGroup 
III
Hazardous Substances Data
74-95-3(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 108 mg/kg LD50 dermal Rabbit > 4000 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P273Avoid release to the environment.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
D41686
Product name
Dibromomethane
Purity
99%
Packaging
500ml
Price
$95.6
Updated
2024/03/01
Sigma-Aldrich
Product number
SAB2502029
Product name
Anti-DBH antibody produced in goat
Purity
affinity isolated antibody, buffered aqueous solution
Packaging
100μG
Price
$568
Updated
2024/03/01
Sigma-Aldrich
Product number
8.10278
Product name
Dibromomethane
Purity
(stabilised) for synthesis
Packaging
100mL
Price
$40.3
Updated
2024/03/01
Sigma-Aldrich
Product number
D41686
Product name
Dibromomethane
Purity
99%
Packaging
2l
Price
$280
Updated
2024/03/01
Sigma-Aldrich
Product number
8.10278
Product name
Dibromomethane
Purity
(stabilised) for synthesis
Packaging
250ML
Price
$71.9
Updated
2024/03/01
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Dibromomethane Chemical Properties,Usage,Production

Description

Dibromomethane is a member of the class of bromomethanes that is methane substituted by two bromo groups. It is produced by marine algae. It has a role as a marine metabolite and an algal metabolite. It is a member of bromomethanes and a bromohydrocarbon.

Chemical Properties

colourless liquid

Chemical Properties

Dibromomethane is a colorless liquid with a sweet, pleasant odor.

Uses

Organic synthesis, solvent.

Uses

Dibromomethane is used as solvent in organic synthesis. It acts as an intermediate in the manufacture of specialty chemicals, agrochemicals and pharmaceuticals. It is useful as extractant and utilized for the determination of 5-nitroimidazoles (5-NDZ) in environmental waters. It is involved in the convertion of catechols to their methylenedioxy derivatives.

Definition

ChEBI: A member of the class of bromomethanes that is methane substituted by two bromo groups. It is produced by marine algae.

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.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Halogenated aliphatic compounds, such as Dibromomethane, 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.

Health Hazard

INHALATION: Anesthetic effects, nausea and drunkenness. CONTACT WITH SKIN AND EYES: Skin irritation of eyes and nose.

Fire Hazard

Special Hazards of Combustion Products: Dissociation products generated in a fire may be irritating or toxic.

Toxicology

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

Hazard

In laboratory studies, animals experienced CNS depression at 2400-2800 ppm and liver and kidney damage after repeated exposures to 1000 ppm. Dichloromethane rarely causes hepatotoxicity unless exposure is extremely heavy or agent ingested. If left on clothes, it may cause reddening of skin; may have effects on the nervous system and blood, causing impaired functions, carboxyhemoglobinemia, and lowering of consciousness; chronic exposure may cause liver and kidney effects; an irritant; harmful by inhalation; a simple asphyxiant; may cause blood disorders, cardiac irregularities, and CNS depression;

Synthesis

Dibromomethane is synthesized commercially from dichloromethane via bromochloromethane:
6 CH2Cl2  + 3 Br2  + 2 Al  →  6 CH2BrCl  +  2 AlCl3
CH2Cl2  + HBr  →  CH2BrCl  +  HCl
The latter route requires aluminium trichloride as a catalyst. The bromochloromethane product from either reaction can further react in a similar manner:
6 CH2BrCl  + 3 Br2  + 2 Al  →  6 CH2Br2  +  2 AlCl3
CH2BrCl  + HBr  →  CH2Br2  +  HCl
In the laboratory, it is synthesized from bromoform:
CHBr3 + Na3AsO3 + NaOH → CH2Br2 + Na3AsO4 + NaBr
using sodium arsenite and sodium hydroxide.
Another way is to synthesize it from diiodomethane and bromine. 

Potential Exposure

Methylene bromide is used as a solvent and as a chemical intermediate.

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit

storage

Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with thischemical you should be trained on its proper handling andstorage. Store in tightly closed container in a well-ventilatedarea away from potential high heat sources. Where possible,automatically pump liquid from drums or other storage containers to process containers.

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

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Dibromomethane Suppliers

Shanghai Aladdin Bio-Chem Technology Co.,LTD
Tel
400-400-6206333 18521732826
Fax
021-50323701
Email
market@aladdin-e.com
Country
China
ProdList
25003
Advantage
65
NingBo ZhongXin Fine Chemical Co.,Ltd
Tel
13665765309
Email
648341524@qq.com
Country
China
ProdList
24
Advantage
58
Zouping Mingxing Chemical Co.,Ltd
Tel
18806491188
Email
lzkysong@163.com
Country
China
ProdList
20
Advantage
58
Shandong Xiangfei Chemical Co. LTD
Tel
13105464419
Email
13105464419@163.com
Country
China
ProdList
126
Advantage
58
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
Advantage
81
Beijing dtftchem Technology Co., Ltd.
Tel
010-60275820 13031183356
Fax
010-60270825
Email
elainezt@sina.com
Country
China
ProdList
1390
Advantage
62
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44688
Advantage
61
Beijing Ouhe Technology Co., Ltd
Tel
010-82967028 13552068683
Fax
+86-10-82967029
Email
2355560935@qq.com
Country
China
ProdList
12390
Advantage
60
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View Lastest Price from Dibromomethane manufacturers

Hebei Weibang Biotechnology Co., Ltd
Product
Dibromomethane 74-95-3
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 mt
Release date
2024-10-30
Hebei Yanxi Chemical Co., Ltd.
Product
Dibromomethane 74-95-3
Price
US $20.00-1.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
10 tons
Release date
2023-11-02
Hebei Chuanghai Biotechnology Co,.LTD
Product
Dibromomethane 74-95-3
Price
US $5.00-2.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10000kg
Release date
2024-08-15

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