Health Hazards: Dichloromethane presents a cancer hazard and can irritate the skin and eyes. Vapor exposure can affect the central nervous system; high concentrations can cause unconsciousness and may be fatal. Confirm the applicable hazard categories and label statements in the current SDS.
Exposure Control: Use closed handling systems or appropriate local exhaust ventilation. Avoid inhalation and skin or eye contact. Select protective equipment and gloves using the product SDS, permeation data, and the assessed conditions of use.
Storage and Heat Exposure: Keep containers tightly closed in a cool, ventilated area. Avoid flames and hot surfaces; decomposition can release hazardous gases, including hydrogen chloride and phosgene. Review the SDS for incompatible materials and suitable container materials.
Transport Reference: UN 1593, DICHLOROMETHANE; Class 6.1; Packing Group III. Confirm shipment classification, packaging, and labeling against the current SDS and applicable transport rules.
Documentation and Disposal: Follow the current SDS for spill response, waste handling, and emergency measures. Review destination-specific restrictions and occupational exposure requirements before use.
Methylene Chloride CAS 75-09-2
Methylene Chloride (Dichloromethane) CAS 75-09-2 from Aure Chemical
Methylene chloride, also known as dichloromethane or DCM, CAS 75-09-2, is a volatile chlorinated solvent with the molecular formula CH₂Cl₂. Its low boiling point and ability to dissolve many organic compounds support its use in chemical synthesis, extraction, pharmaceutical intermediate processing, and selected polymer manufacturing processes. Aure Chemical supports China chemical sourcing and international export requirements through product specification review, quality documentation, supplier coordination, and shipment planning.
Basic Information of Methylene Chloride
The following information identifies methylene chloride and summarizes selected reference properties. The reported quality limits and results for one production lot are presented separately in the Reference Quality Analysis section.
| CAS No. | 75-09-2 |
|---|---|
| EC No. | 200-838-9 |
| Molecular Formula | CH₂Cl₂ |
| Molecular Weight | 84.93 g/mol |
| Appearance | Colorless liquid |
| Odor | Characteristic, chloroform-like odor |
| Boiling Point | Approximately 40 °C at 101.3 kPa (reference) |
| Water Solubility | Approximately 1.3 g/100 mL at 20 °C, as stated in the technical data sheet |
| Physical Characteristics | Volatile liquid; vapor is heavier than air |
| Transport Reference | UN 1593, DICHLOROMETHANE, Class 6.1, Packing Group III; confirm against the current product SDS and applicable transport requirements |
| Chemical Structure |  |
Product qualification should address purity, water content, free acidity, evaporation residue, and any restrictions on stabilizers or other additives. Confirm the required commercial grade before ordering.
Reference Quality Analysis
The following quality parameters provide a technical reference for evaluating methylene chloride, including color, free acidity, water content, purity, evaporation residue, amylene content, and relative density. The results represent one production lot.
| Test Item | Reported Specification | Reference Result |
|---|---|---|
| Color (Pt-Co scale) | ≤ 10 | 10 |
| Free acidity (as HCl) | ≤ 0.0004% | 0 (as reported) |
| Moisture (water) | ≤ 0.01% | 0.0048% |
| Purity | ≥ 99.9% | 99.98% |
| Residue after evaporation | ≤ 0.0005% | 0.0003% |
| Amylene | ≤ 0.005% | 0.0035% |
| Relative density (water = 1) | 1.318–1.323 | 1.32 |
The reference COA does not specify test methods or the measurement temperature for relative density. Relative density is dimensionless. The free-acidity result is reproduced as “0”; no detection limit or reporting precision is stated, so this result should not be interpreted as proof of absolute absence.
These values support preliminary technical evaluation and do not guarantee the results of every shipment. Please contact Aure Chemical to confirm the applicable specifications, additive requirements, and batch-specific Certificate of Analysis (COA) before ordering.
Primary Applications of Methylene Chloride (Dichloromethane)
DCM can serve as a process solvent where its solvency, volatility, and limited water solubility meet the needs of the operation. Application suitability depends on the selected grade, process controls, and the requirements of the destination market.
Organic Synthesis and Extraction:
Used as a reaction medium and extraction solvent in selected fine chemical processes. Its limited water solubility allows formation of a separate organic phase during suitable aqueous workup procedures, while its low boiling point facilitates subsequent solvent removal.
Pharmaceutical Intermediate Processing:
Used in selected synthesis, separation, and purification operations. Qualification should address water, acidity, additive compatibility, and the process requirements for residual solvent control. Suitability for a particular pharmaceutical process requires separate grade and documentation review.
Polymer, Resin, and Industrial Formulation Processing:
Used in selected polymer and resin processing operations and solvent systems for industrial formulations. Polymer compatibility, evaporation behavior, residue after evaporation, and solvent recovery requirements should be evaluated for the intended manufacturing process.
Laboratory and Process Development:
Used for organic synthesis, extraction, and process evaluation under appropriate exposure controls. Analytical or other sensitive applications may require additional grade-specific testing beyond the parameters shown in the reference COA.
Confirm that the intended use is permitted in the destination market and that the facility can meet the applicable exposure, emission, and waste management requirements.
Aure Chemical: Methylene Chloride Sourcing and Export Support
Aure Chemical is a chemical trading and export supply business. We coordinate product and documentation review with suppliers to help buyers assess the suitability of a proposed methylene chloride grade.
Specification Review: Review purity, moisture, free acidity, color, evaporation residue, amylene content, and any additional buyer requirements against the available quality documentation.
Supplier Coordination: Confirm the proposed grade, available quantity, packaging options, and lead time for the specific order.
Quality and Safety Documentation: Coordinate requests for the relevant batch COA, technical data, and current product SDS. Additional application or regulatory documentation is subject to availability and review.
International Export Logistics: Coordinate packaging, labeling, shipping documentation, and transport arrangements according to the product classification, order quantity, destination, and carrier requirements.
For a sourcing inquiry, please provide the intended industrial use, required specifications, additive restrictions, order quantity, and destination.
Safety, Handling & Documentation
Obtain the current SDS for the supplied grade and destination before handling, storage, or transport. The overview below does not replace the product SDS or a workplace exposure assessment.
Packaging
200 L steel drum
Final packaging, capacity and net weight are confirmed in the quotation and order.
