Dichloromethane
DCM · CH₂Cl₂ · CAS 75-09-2
CH₂Cl₂
DCM
Overview
Dichloromethane (DCM, methylene chloride) is a colorless, transparent, volatile liquid with an ether-like odor and a sweet taste. Our Gold Diamond special grade (enterprise standard) reaches 99.99% purity. It is a versatile low-toxicity organic solvent and the principal raw material for refrigerant R32, supplied from a 600,000 t/y methane chlorides production base.
Methylene Chloride (CH2Cl2) — Gold Diamond special grade up to 99.99%
Chemical Identity
| CAS No. | 75-09-2 |
|---|---|
| Molecular formula | CH₂Cl₂ |
| Molecular weight | 84.93 |
| Synonyms | Methylene chloride, Methylene dichloride |
| Standard | GB/T 4117-2008; Enterprise Standard (Gold Diamond Special) |
Specifications
Values shown in percent (%) unless noted otherwise; “—” indicates no limit for that grade.
GB/T 4117-2008; Enterprise Standard (Gold Diamond Special)
| Item | Gold Diamond Special | Superior | First | Qualified |
|---|---|---|---|---|
| Appearance | Colorless clear liquid, no suspended matter | Colorless clear liquid, no suspended matter | Colorless clear liquid, no suspended matter | Colorless clear liquid, no suspended matter |
| DCM content, % ≥ | 99.99 | 99.90 | 99.50 | 99.20 |
| Moisture, % ≤ | 0.008 | 0.010 | 0.020 | 0.030 |
| Acidity (as HCl), % ≤ | 0.0004 | 0.0004 | 0.0004 | 0.0008 |
| Color (Pt-Co), max | 10 | 10 | 10 | 10 |
| Evaporation residue, % ≤ | 0.0005 | 0.0005 | 0.0005 | 0.0010 |
| Chloride ion, % ≤ | 0.0005 | — | — | — |
| Chloroform content, % ≤ | 0.006 | — | — | — |
| Carbon tetrachloride, % ≤ | Not detected | — | — | — |
| Form & odor | Colorless transparent volatile liquid; ether-like odor and sweet taste |
|---|---|
| Melting point | -96.7 °C |
| Boiling point | 39.8 °C |
| Flash point | The pure product has no flash point |
| Density (20 °C) | 1.325 g/cm³ |
| Solubility | Slightly soluble in water; soluble in ethanol and ether |
Applications
- Main raw material for refrigerant R32
- Strong low-toxicity organic solvent for paint thinners, metal degreasing and electronics cleaning
- Shoe release agents and paint removers
- Pharmaceutical solvent and reaction medium for ampicillin, oxypicillin and cephalosporin production
- Universal adhesive solvent and ink solvent
- Flame-retardant and fast-drying solvent
- PU sponge blowing agent and aerosol propellant
- Petroleum dewaxing and extraction agent
- Safety film and polycarbonate manufacture
Packaging & Storage
Packaging
- 200 L galvanized steel drum
- ISO tank
Storage & transport
Store in a cool, dry, well-ventilated place. Comply with dangerous goods transport regulations for handling and shipment.
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