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A3234212

Dichloromethane , AR, 99.5%, containing 50-150 ppm isoprene stabilizers , 75-09-2

Synonym(s):
DCM;Dichloromethane;Methylene chloride;Dichloromethane solution;Dichloromethane ZerO2

CAS NO.:75-09-2

Empirical Formula: CH2Cl2

Molecular Weight: 84.93

MDL number: MFCD00672695

EINECS: 200-838-9

Update time: 2022-07-08

PRODUCT 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.)
Flash point: 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
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)
Exposure limits TLV-TWA 50 ppm (~175 mg/m3) (ACGIH); carcinogenicity: Suspected Human Carcinogen (ACGIH), Animal Sufficient Evidence, Human Inadequate Evidence (IARC).
Dielectric constant 9.1(20℃)
Stability: Volatile
LogP 1.250

Description and Uses

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.

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.

Safety

Symbol(GHS) 
GHS07,GHS08
Signal word  Warning
Hazard statements  H315-H319-H336-H351
Precautionary statements  P201-P202-P261-P302+P352-P305+P351+P338-P308+P313
Hazard Codes  Xn,T,F,N,C
Risk Statements  40-39/23/24/25-23/24/25-11-67-36/37/38-68/20/21/22-20/21/22-50-37-34
Safety Statements  23-24/25-36/37-45-16-7-26-61-36/37/39
RIDADR  UN 1593 6.1/PG 3
WGK Germany  2
RTECS  PA8050000
3-10
Autoignition Temperature 556 °C
Hazard Note  Harmful
TSCA  Yes
HS Code  2903 12 00
HazardClass  6.1
PackingGroup  III
Toxicity LD50 orally in young adult rats: 1.6 ml/kg (Kimura)
IDLA 2,300 ppm

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