CAS 75-09-2: Dichloromethane (Methylene Chloride) (CH2Cl2)

Identity

CAS Number75-09-2
Molecular FormulaCH2Cl2
IUPAC Namedichloromethane
Molecular Weight84.93 g/mol
SMILESClCCl
Synonymsmethylene chloride, DCM, solvent 30

2D Structure

Physical Properties

Density1.325 g/mL at 25°C
Boiling Point39.6°C
Melting Point-96.7°C
Flash PointNone°C
Vapor Pressure47.0 kPa at 20°C
Refractive IndexnD = 1.424
Dielectric Constantε = 8.93

Safety & GHS Classification

IrritantHealth Hazard

Storage: Store in cool, ventilated area away from strong bases and light. DCM decomposes to phosgene upon UV exposure. Use in well-ventilated space with proper respiratory protection per OSHA DCM standard 29 CFR 1910.1052.

Material Compatibility Matrix

Plastics

MaterialRating
PTFEExcellent
PVCPoor
PEPoor
PPFair
PEEKExcellent
PVDFGood

Rubbers

MaterialRating
VitonExcellent
NBRFair
EPDMGood
SiliconeGood
FKMExcellent

Metals

MaterialRating
Stainless 316Excellent
AluminumExcellent
CopperExcellent
BrassExcellent

Applications

External References: PubChem

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