METHYLENE CHLORIDE

PRODUCT IDENTIFICATION

CAS NO. 75-09-2

METHYLENE CHLORIDE

EINECS NO. 200-838-9
FORMULA CH2Cl2
MOL WT. 84.93

H.S. CODE

2903.12
TOXICITY Oral rat LD50: 1600mg/kg
SYNONYMS Dichloromethane; Freon 30; Methylene dichloride;
Chlorure De Methylene (French); Chlorocarbon; Methylene Bichloride; Metylenu Chlorek (Polish);
DESCRIPTION  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE Clear, colorless liquid
MELTING POINT

-97 C

BOILING POINT 40 C
SPECIFIC GRAVITY 1.32
SOLUBILITY IN WATER slightly soluble
pH  
VAPOR DENSITY 2.9

AUTOIGNITION

556 C

NFPA RATINGS

Health: 2 Flammability: 1 Reactivity: 0

REFRACTIVE INDEX

1.4242
FLASH POINT

 

STABILITY Stable under ordinary conditions

APPLICATIONS

Halogenoalkanes, also known as haloalkanes or alkyl halides, are organic compounds in which one or more hydrogen atoms in an alkane have been replaced by halogen atoms, fluorine, chlorine, bromine or iodine. In carbon-halogen bond, halogens have significantly greater electronegativities than carbon except iodine. In result, this functional group is polarized so that the carbon is electrophilic and the halogen is nucleophilic. Halogenoalkanes are can be classified depending on the halogen atom position on the chain of carbon atoms. The carbon which is attached with the halogen atom is linked up with only one other alkyl group in primary halogenoalkanes, whereas directly linked up with two and three other alkyl groups in secondary halogenoalkanes and tertiary halogenoalkanes respectively. In some case, primary halogenoalkanes are counted even though there are no alkyl groups attached to the carbon with the halogen on it. Three characteristics provide important influences on the chemical behavior of halogenoalkanes, these are electronegativity, covalent bond strength and the relative stability of the corresponding halide anions.  Fluoroalkanes have the strongest of the carbon-halogen covalent bonds so that they are unreactive. This is stronger single bond than a carbon-carbon bond. The carbon-chlorine covalent bond is slightly weaker than a carbon-carbon bond, and the bonds to the other halogens are weaker. The stability may be estimated from the relative acidities of the H-X acids. All the hydrohalic acids are very strong, but with small differences in the direction HCl < HBr < HI, with the exception of HF. Halogenoarenes, also called haloarene, or aryl Halide, are  an organic compound in which one or more hydrogen atoms in an aromatic ring have been replaced by halogen atoms. The Haloarenes exhibit many differences compare to haloalkanes in the method of preparation and their chemical and phisical properties. Haloalkanes are used in as refrigerants, solvents, blowing agents, aerosol propellants, fire extinguishing media , and in semiconductor device fabrication. One of big consumption of halogenoalkanes (properly speaking, halogenoalkenes) is as a raw material to prepare plastics such as PVC [poly(chloroethene)] from chloroethene and PTFE [poly(tetrafluoroethene)] from tetrafluoroethene. Halogenoalkanes and halogenoarenes react with lots of compounds resulting in a wide range of different target substances. They are useful intermediates in making other organic compounds.

Methylene chloride is used in paint and varnish remover formulations, solvent vapor depressent in aerosol applications, general cleaning solvent and as a foam blowing agent for flexible polyurethane foams,

SALES SPECIFICATION

APPEARANCE

Clear liquid free from suspended matter

ASSAY
99.9% min

SPECIFIC GRAVITY

1.318 - 1.321

NONVOLATILES

10ppm max

WATER

100ppm max

COLOR, APHA

10max

ACIDITY (HCl)

5ppm max

FREE HALOGENS

Passes test

TRANSPORTATION
PACKING 260kgs in Drum
HAZARD CLASS 6.1
UN NO. 1593
OTHER INFORMATION
European Hazard Symbols: XN, Risk Phrases: 40, Safety Phrases: 23C/24/25/36/37

CHLORINATED SOLVENTS

COMPOUND

CAS #

FORMULA (MOL WT.)

BOILING POINT C

DENSITY

VAPOR DENSITY

Methyl chloride 74-87-3 CH3Cl (50.49)

-24.2

0.915

1.74

Methylene chloride 75-09-2 CH2Cl2 (84.93) 39.8 1.3 2.9
Chloroacetic Acid 79-11-8 ClCH2COOH (94.50)

188

1.58

3.3

1,1-Dichloroethene 75-35-4 CH2=CCl2 (96.94) 31.7 1.213

3.4

1,2-Dichloroethylene (isomer mixture) 540-59-0 ClCH=CHCl  (96.94) 48 - 60 1.3 3.4
1,1-Dichloroethane 75-34-3 CH3CHCl2  (98.96) 57.3 1.2 3.4
Ethylene dichloride 107-06-2 ClCH2CH2Cl  (98.96) 83.5 1.2 3.4
Chloroacetic Chloride 79-04-9 ClCH2COCl (112.94)

105

1.42

3.9

1,2-Dichloropropane 78-87-5 CH3CHClCH2Cl  (112.99) 96.8 1.2 3.9
Chloroform (Trichloromethane) 67-66-3 CHCl3  (119.38) 61.7 1.5 4.1
Trichloroethylene 79-01-6 ClCH=CCl2  (131.39) 86.7 1.5 4.5
1,1,1-Trichloroethane (Methyl Chloroform) 71-55-6 Cl3CCH3  (133.40) 74.1 1.3 4.6
1,1,2-Trichloroethane 79-00-5 ClCH2CHCl2  (133.40) 113.8 1.4 4.6
1,2,3-Trichloropropane 96-18-4 CH2ClCHClCH2Cl  (147.43) 156 1.4 5.1
Carbon Tetrachloride 56-23-5 CCl4  (153.82) 76.7 1.6 5.3
1,1,2,2-Tetrachloroethylene 127-18-4 CCl2=CCl2  (165.83) 121.1 1.6 5.8
1,1,2,2-Tetrachloroethane 79-34-5 CHCl2CHCl2  (167.85) 146.3 1.6 5.8

The production and use of 1,1,1-trichloroethane and carbon tetrachloride have been phased out throughout the world because of suspected harm to the earth's ozone layer. 

 

 

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