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Dibromomethane cas no:74-95-3

Synonyms: Methylene bromide; methylene dibromide

Identification
NameDibromomethane
CAS74-95-3
SynonymsMethylene bromide; methylene dibromide
EINECS(EC#)200-824-2
Molecular FormulaCH2Br2
Molecular Weight173.83
Chemical Properties
Appearancecolourless liquid
refractive index1.54-1.542
storage tempRefrigerator
Globally Harmonized System of Classification adn Labelling of Chemicals(GHS)
Hazardclass6.1
Safety Data

Hazard Xn:Harmful
Risk R20;R52/53
Safety

Hazard Codes:??Xn,T,F
Risk Statements:? 20-52/53-39/23/24/25-23/24/25-11?
R20:Harmful by inhalation.?
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.?
R39:Danger of very serious irreversible effects.?
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed.?
R11:Highly flammable.
Safety Statements:? 24-61-45-36/37-16-7?
S24:Avoid contact with skin.?
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.?
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)?
S36/37:Wear suitable protective clothing and gloves.?
S16:Keep away from sources of ignition.?
S7:Keep container tightly closed.
RIDADR:UN 2664 6.1/PG 3
WGK Germany:? 2
RTECS:? PA7350000
HazardClass:? 6.1
PackingGroup:? III
A poison. Moderately toxic by subcutaneous route. Mildly toxic by inhalation. Mutation data reported. Mixtures with potassium explode on light impact. When heated to decomposition it emits toxic fumes of Br?.


Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 subcutaneous 3738mg/kg (3738mg/kg) ? Toxicology and Applied Pharmacology. Vol. 4, Pg. 354, 1962.
rabbit LD50 oral 1gm/kg (1000mg/kg) ? Dow Chemical Company Reports. Vol. MSD-472,
rabbit LD50 skin > 4gm/kg (4000mg/kg) ? Dow Chemical Company Reports. Vol. MSD-472,
rabbit LDLo rectal 5gm/kg (5000mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION
Journal of Pharmacology and Experimental Therapeutics. Vol. 34, Pg. 223, 1928.
rat LC50 inhalation 40gm/m3/2H (40000mg/m3) ? "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 83, 1982.
rat LD50 oral 108mg/kg (108mg/kg) ? National Technical Information Service. Vol. PB85-143766

supplier list

Unistar International, Inc.
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Klaus F. Meyer GmbH
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Dead Sea Bromine Group
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Alfa Aesar
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Ring Specialty Chemicals, Inc.
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Shanghai Ruiyi Medical Tech Co., Ltd
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Tractus-Chemistry
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Trust & We Co., Ltd.
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Shanghai Xunxin Chemical Co., Ltd
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Zouping Ming Xing Chemical Co., Ltd.
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Suzhou Industrial Park Yacoo Chemical Reagent Co., Ltd.
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Dalchem
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ICL - Industrial Products
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Wuhan Senwayer Century chemical Co.,Ltd
Tel:86-27-59009407
Address: 20#Xudong Street,Wuhan China
Hangzhou J&H Chemical Co., Ltd
Tel:86-571-87396430
Address: No.200 Zhenhua Rd.Xihu Industrial Park, Hangzhou 310030, China

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