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Dichloromethane CAS# 75-09-2

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Chemical Name：Dichloromethane

CAS No.: 75-09-2

Molecular Formula：CH2Cl2

Molecular weight:84.93

Sample: Available

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Product Details

Dichloromethane CAS# 75-09-2

Dichloromethane is a colorless liquid with an ethereal, but penetrating odor. Its miscibility in alcohol and ether and slight solubility in water has made it an ideal solvent and otherwise extremely versatile chemical. It has been used industrially (solvent and paint remover), as a drug (inhalation anesthetic) and as an agricultural chemical (growth regulator and fertilizer). It is narcotic in high concentrations and carcinogenic. Inhalation exposure to this substance irritates the nose and throat and affects the central nervous system.

Dichloromethane CAS# 75-09-2

Dichloromethane Chemical Properties

Melting point	-97 °C
Boiling point	39.8-40 °C mm Hg(lit.)
density	1.325 g/mL at 25 °C(lit.)
vapor density	2.9 (vs air)
vapor pressure	24.45 psi ( 55 °C)
refractive index	n20/D 1.424(lit.)
Fp	39-40°C
storage temp.	room temp
solubility	Miscible in ethyl acetate, alcohol, hexanes, methanol, diethyl ether, n-octanol, acetone benzene, carbon tetrachloride, diethyl ether and chloroform.
form	Liquid
color	APHA: ≤10
Specific Gravity	1.329 (20/20℃)
Odor	Odor threshold 160 to 230 ppm
PH	7 (20°C)
Odor Threshold	160ppm
explosive limit	13-22%(V)
Water Solubility	20 g/L (20 ºC)
λmax	λ: 235 nm Amax: 1.00 λ: 240 nm Amax: 0.20 λ: 250 nm Amax: 0.05 λ: 260 nm Amax: 0.02 λ: 340-400 nm Amax: 0.01
Merck	14,6063
BRN	1730800
Henry's Law Constant	2.49 at 30 °C (headspace-GC, Sanz et al., 1997)
Dielectric constant	9.1（20℃）
Exposure limits	TLV-TWA 50 ppm (～175 mg/m3) (ACGIH); carcinogenicity: Suspected Human Carcinogen (ACGIH), Animal Sufficient Evidence, Human Inadequate Evidence (IARC).
Stability:	Volatile
LogP	1.250
Surface tension	26.5mN/m at 20°C
CAS DataBase Reference	75-09-2(CAS DataBase Reference)
NIST Chemistry Reference	Methylene chloride(75-09-2)
IARC	2A (Vol. Sup 7, 71, 110) 2017
EPA Substance Registry System	Methylene chloride (75-09-2)
Absorption	in accordance

Product Usage

Methylene chloride is primarily used as a paint remover solvent. It is also used as an aerosol propellant, processing solvent in the production of steroids, antibiotics, vitamins, and tablet coatings. Additionally, it serves as a degreasing agent, particularly in electronics manufacturing. Methylene chloride is utilized as a urethane foamblowing agent as well. It finds application in metal cleaning, production of polycarbonate resins and triacetate fibers, film processing, ink formulations, and as an extraction solvent for spice oleoresins, caffeine, and hops. Due to its high volatility, it is commonly employed as a solvent in various extraction processes. Methylene chloride possesses strong solvent power for cellulose esters, fats, oils, resins, and rubber. It is more soluble in water compared to other chlorinated solvents. In the past, it was approved for use as an insecticide for commodity fumigation of strawberries, citrus fruits, and grains.

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