dichloromethane mc methylene chloride

Buyers must prioritize purity levels, typically requiring ≥99.9% for industrial and pharmaceutical grades. Check the moisture content (≤100ppm) and acidity (as HCl, ≤10ppm) to prevent equipment corrosion. Ensure the product is a colorless, volatile liquid with no suspended matter, adhering to standards like GB/T 4117-2008 or international equivalents.

Dichloromethane is a versatile solvent used as a paint stripper and remover, a process solvent in pharmaceutical manufacturing (e.g., for vitamins and antibiotics), and a blowing agent for polyurethane foams. It is also widely used in metal cleaning and degreasing, as well as a carrier solvent in the adhesive industry.

As a hazardous chemical, it must have a valid Material Safety Data Sheet (MSDS/SDS). Ensure the supplier provides UN-certified packaging (usually UN 1593, Class 6.1 Toxic Substances). For export to the EU, REACH registration is mandatory; for the US, compliance with TSCA (Toxic Substances Control Act) and EPA regulations regarding VOC emissions is essential.

Request a Certificate of Analysis (COA) for every batch. For large-scale B2B procurement, it is highly recommended to engage third-party inspection services like SGS or Intertek to perform pre-shipment sampling and testing to verify purity and the absence of contaminants like carbon tetrachloride.

The main risks include regulatory seizure due to improper documentation and leakage during transit. Because MC is highly volatile, temperature-controlled storage or specialized ISO tanks/steel drums are required. Always verify that the supplier has a Dangerous Goods Export License to avoid customs delays.

Utilize secure payment methods and prioritize Audited Suppliers on Made-in-China.com. Look for manufacturers with ISO 9001 and ISO 14001 certifications. Conduct a factory audit (virtual or physical) to confirm their production capacity and safety management systems for handling volatile organic compounds.

Dichloromethane is classified as Dangerous Goods (DG). It must be shipped in 250kg blue steel drums or ISO Tanks. Ensure the shipping line accepts Class 6.1 hazardous materials and that the port of discharge has the necessary infrastructure to handle toxic chemicals. Marine insurance covering chemical leakage is strongly advised.

Chemical prices fluctuate with raw material costs (liquid chlorine and methanol). Negotiate based on formula-based pricing for long-term contracts. Seek volume discounts for full container loads (FCL). For Incoterms, CIF (Cost, Insurance, and Freight) is often preferred by buyers to ensure the seller handles the complex DG loading and insurance requirements.