Carbon disulfide

For most industrial applications, such as viscose rayon production or rubber vulcanization, a purity level of ≥99.9% is standard. Buyers must verify the non-volatile matter content (typically <0.001%) and the sulfur content to prevent catalyst poisoning in downstream processes. Ensure the product is colorless and transparent; a yellowish tint often indicates the presence of free sulfur or decomposition due to improper storage.

As a highly flammable and toxic chemical (Class 3/6.1), it must have a Globally Harmonized System (GHS) compliant Safety Data Sheet (SDS). Suppliers must provide UN-certified packaging (usually UN 1A1 steel drums or ISO tanks) and adhere to IMDG codes for maritime transport. For European markets, REACH registration is mandatory, while US buyers should ensure compliance with TSCA (Toxic Substances Control Act) regulations.

Carbon Disulfide has an extremely low ignition point (approx. 90°C). You must prioritize suppliers who utilize water-blanketing or nitrogen-padding technology during filling to prevent vapor ignition. Evaluate the supplier's loading facility safety protocols and ensure they provide conductive packaging to mitigate static electricity risks during discharge at your facility.

It is primarily used as a precursor for Carbon Tetrachloride, a solvent in viscose rayon and cellophane manufacturing, and an intermediate in the production of rubber accelerators and soil disinfectants. In the mining industry, it is essential for the synthesis of xanthates used in ore flotation. Buyers should match the grade (Technical vs. Analytical) to their specific chemical synthesis requirements.

Carbon Disulfide is classified as Dangerous Goods (DG), requiring specialized Class 3 (Flammable Liquid) and Class 6.1 (Toxic) labeling. It is often restricted on passenger aircraft and many cargo vessels. You must work with freight forwarders experienced in DG logistics and ensure the supplier provides a Dangerous Goods Declaration. Shipping via ISO Tanks is the most cost-effective and safest method for high-volume cross-border orders.

Utilize third-party inspection services like SGS or Intertek to perform pre-shipment sampling and testing at the loading port. For secure transactions, use Letters of Credit (L/C) or trade assurance terms that release payment only upon the presentation of a clean Bill of Lading and a verified Certificate of Analysis (COA). On Made-in-China.com, look for Audited Suppliers to ensure the factory has been physically verified.

Carbon Disulfide prices are heavily influenced by raw material costs (natural gas and sulfur). Negotiate formula-based pricing for long-term contracts to hedge against market volatility. For spot purchases, request quotes from at least 3-5 verified manufacturers on Made-in-China.com to establish a market benchmark, and aim for volume-based discounts if your storage capacity allows for bulk ISO tank deliveries.

Check the HS Code (typically 2813.10) for specific import duties in your country. Many regions require an Import License for hazardous chemicals. Ensure all documentation, including the Commercial Invoice, Packing List, and SDS, matches the chemical description exactly to avoid customs seizures or heavy fines related to the misdeclaration of dangerous goods.