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Dichloromethane CAS#75-09-2
CAS Number: 75-09-2
Chemical Formula: CH2Cl2
Synonyms:
F30
F30(chlorocarbon)
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Appearance: APHA: ≤10 Liquid
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 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 | n |
| 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℃) |
| PH | 7 (20°C) |
| 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 |
| Surface tension | 26.5mN/m at 20°C |
| CAS DataBase Reference | 75-09-2(CAS DataBase Reference) |
| IARC | 2A (Vol. Sup 7, 71, 110) 2017 |
| NIST Chemistry Reference | Methylene chloride(75-09-2) |
| EPA Substance Registry System | Methylene chloride (75-09-2) |
| Absorption | in accordance |
| ECETOC JACC REPORT | Dichloromethane (75-09-2) |
| Safety Information |
| 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 |
| F | 3-10 |
| Autoignition Temperature | 556 °C |
| Hazard Note | Harmful |
| TSCA | Yes |
| HS Code | 2903 12 00 |
| HazardClass | 6.1 |
| PackingGroup | III |
| Hazardous Substances Data | 75-09-2(Hazardous Substances Data) |
| Toxicity | LD50 orally in young adult rats: 1.6 ml/kg (Kimura) |
| IDLA | 2,300 ppm |
Product Application of Dichloromethane CAS#75-09-2
House Hold Uses
The compound is used in bathtub refurbishing. Dichloromethane is highly used industrially in the production of pharmaceuticals, strippers, and process solvents.
Industrial and Manufacturing Uses
DCM is a solvent that is found in varnish and paint strippers, which are often used to remove varnish or paint coatings from various surfaces. As a solvent in the pharmaceutical industry, DCM is used for the preparation of cephalosporin and ampicillin.
Food and Beverage Manufacturing
It is also used in manufacturing beverage and food manufacturing as an extraction solvent. For instance, DCM can be used to decaffeinate unroasted coffee beans as well as tea leaves. The compound is also used in creating hops extract for beer, beverages and other flavoring for foods, as well as in processing spices.
Transportation Industry
DCM is normally used in the degreasing of metal parts and surfaces, such as railroad equipment and tracks as well as airplane components. It can also be used in degreasing and lubricating products utilized in automotive products, for instance, removal of the gasket and for preparing metal parts for a new gasket.
Experts in automotive commonly use vapor dichloromethane degreasing process to for the removal of grease and oils from car parts of car transistor, spacecraft assemblies, aircraft components, and diesel motors. Today, specialists are able to safely and quickly clean transportation systems using degreasing techniques that depend on methylene chloride.
Medical Industry
Dichloromethane is used in laboratories in the extraction of chemicals from foods or plants for medicines such as antibiotics, steroids, and vitamins. In addition, medical equipment can be efficiently and quickly cleaned using dichloromethane cleaners while avoiding damage to heat-sensitive parts and corrosion problems.
Photographic Films
Methylene chloride is used as a solvent in the production of cellulose triacetate (CTA), which is applied in the creation of safety films in photography. When dissolved in DCM, CTA begins to evaporate as the fibre of acetate remains behind.
Electronic Industry
Methylene chloride is used in the production of printed circuit boards in the electronic industry. DCM is utilized to degrease the foil surface of the substrate before the photoresist layer is added to the board.
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