二氯甲烷

Description

Dichloromethane · CAS 75-09-2 · CH2Cl2. UNII 588X2YUY0A. Boiling Point: 103.6 °F at 760 mmHg (NTP, 1992); Boiling Point: 39.75 °C at 760 mm Hg; Boiling Point: 40 °C.

Identification

CAS Registry Number	75-09-2
PubChem CID	6344
Molecular formula	CH2Cl2
IUPAC name	dichloromethane
UNII (FDA)	588X2YUY0A

Computed Descriptors

Molecular Weight	84.93
XLogP3	1.5
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	83.9533555
Monoisotopic Mass	83.9533555
Topological Polar Surface Area	0
Heavy Atom Count	3
Formal Charge	0

Physical & Chemical Properties

Boiling Point	103.6 °F at 760 mmHg (NTP, 1992)
Boiling Point	39.75 °C at 760 mm Hg
Boiling Point	40 °C
Boiling Point	104 °F
Boiling Point	40 °C @760 [mm Hg]
Melting Point	-142.1 °F (NTP, 1992)
Melting Point	-95 °C
Melting Point	-96.8 °C
Melting Point	-97 °C
Melting Point	-139 °F

Physical description & handling notes

• Dichloromethane appears as a colorless liquid with a sweet, penetrating, ether-like odor. Noncombustible by if exposed to high temperatures may emit toxic chloride fumes. Vapors are narcotic in high concentrations. Used as a solvent and paint remover.
• CBI; Liquid
• Colorless liquid with a chloroform-like odor. [Note: A gas above 104 degrees F.] [NIOSH]
• Liquid
• VERY VOLATILE COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.
• Colorless liquid with a chloroform-like odor.

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: COLOR OR COLORING ADJUNCT, FLAVOR ENHANCER, SOLVENT OR VEHICLE FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS EXTRACTION_SOLVENT: Food Additives Should be limited to current uses (as an extraction solvent for spice oleoresins and the decaffeination of cof TRS 828-JECFA 39/18
GHS notification summary	0.2% (4 / 1930)

GHS Hazard Classification

GHS notification summary	0.2% (4 / 1930)
Reported hazard statements	H351, H302 (24.1%), H315 (30.4%), H319 (53.2%), H336 (29.9%), H341 (22.9%), H373 (12.7%), H332

Documented Uses

• CIR ingredient: Methylene Chloride
• Methylene chloride is predominantly used as a solvent in paint strippers and removers; as a process solvent in the manufacture of drugs, pharmaceuticals, and film coatings; as a metal cleaning and finishing solvent in electronics manufacturing; and as an agent in urethane foam blowing. It is used as an extraction solvent for spice oleoresins, hops, and for the removal of caffeine from coffee. However, due to concern over residual solvent, most decaffeinators no longer use methylene chloride.
• In US industries, the process use of methylene chloride ended in the mid-1990s; [PMID 24224613] Methylene chloride standard (29 CFR 1910.1052) requires medical surveillance if >action level >30 days/yr of >STEL >10 days/yr;
• Metal Degreasing [Category: Clean]
• Painting (Solvents) [Category: Paint]
• Leather Tanning and Processing [Category: Industry]

Synonyms

DICHLOROMETHANE; Methylene chloride; 75-09-2; Methylene dichloride; Methane, dichloro-; Methylene bichloride; Methane dichloride; Solaesthin; Solmethine; Narkotil; Aerothene MM; Freon 30; Metylenu chlorek; Chlorure de methylene; Metaclen; CH2Cl2

Frequently Asked Questions

What are the CAS number and molecular formula of Dichloromethane?

CAS 75-09-2; molecular formula CH2Cl2; molecular weight — g/mol.

What other names is Dichloromethane known by?

DICHLOROMETHANE, Methylene chloride, 75-09-2, Methylene dichloride, Methane, dichloro-, Methylene bichloride.

What is the regulatory status of Dichloromethane?

Documented regulatory listings: FDA Substance added to food: COLOR OR COLORING ADJUNCT, FLAVOR ENHANCER, SOLVENT OR VEHICLE; FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Dichloromethane classified as hazardous?

0.2% of GHS notifications report no hazard classification (4 of 1930).

What are the key physical properties of Dichloromethane?

Boiling Point: 103.6 °F at 760 mmHg (NTP, 1992); Boiling Point: 39.75 °C at 760 mm Hg; Boiling Point: 40 °C; Boiling Point: 104 °F.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.