Tar coal

When sourcing coal tar, you must prioritize chemical composition and physical properties. Key metrics include density (typically 1.15–1.25 g/cm³), viscosity, and water content (ideally <2%). For specialized applications like aluminum production or roofing, verify the Fixed Carbon content and Softening Point. Ensure the supplier provides a Certificate of Analysis (COA) for every batch to guarantee consistency in distillation fractions.

Coal tar is classified as a hazardous material. You must ensure the product complies with REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) for the EU market and TSCA (Toxic Substances Control Act) for the US. Furthermore, the packaging and labeling must strictly adhere to the GHS (Globally Harmonized System of Classification and Labelling of Chemicals), specifically regarding its status as a Category 1 carcinogen and environmental hazard.

Request a pre-shipment inspection (PSI) conducted by a third-party agency like SGS or Intertek. The inspection should focus on ash content (should be <0.1% for high grade), toluene insoluble (TI) levels, and quinoline insoluble (QI) content. For B2B buyers, it is highly recommended to request a 1kg sample for laboratory testing before committing to bulk vessel or ISO tank orders.

Coal tar is versatile: Crude Coal Tar is primarily used for distillation into oils and pitch; Refined Tar is used in pavement sealants and anti-corrosion coatings; and Coal Tar Pitch is essential for manufacturing graphite electrodes and aluminum anodes. Ensure your supplier understands the specific end-use to provide the correct distillation range.

Coal tar is a Class 9 Miscellaneous Dangerous Good (or Class 3 if flammable volatiles are high). The primary risk is leakage and environmental contamination. You must ensure the supplier uses UN-certified packaging, such as ISO Tanks or steel drums with internal coatings. Always verify that the Material Safety Data Sheet (MSDS) is updated and matches the specific batch being shipped to avoid customs seizures.

Pricing for coal tar is often linked to global crude oil or coking coal indices. Negotiate a formula-based pricing model for long-term contracts. For payment, use Irrevocable Letter of Credit (L/C) at sight or Trade Assurance via reputable platforms like Made-in-China.com to protect your funds until the Bill of Lading (B/L) and Quality Certificate are verified.

For large volumes, Flexitanks can be more cost-effective than drums, but only if the product is non-hazardous and the temperature is controlled. For standard coal tar, ISO Tanks are the gold standard for safety and ease of discharge. Ensure the Incoterms are clearly defined; CIF (Cost, Insurance, and Freight) is often preferred for buyers new to chemical logistics, as the seller manages the complex dangerous goods (DG) bookings.

Conduct a factory audit to confirm the supplier has a valid Hazardous Chemicals Business License and Export License. Use the verified supplier directory on Made-in-China.com to filter for Audited Suppliers. Avoid making full advance payments; a standard 30% deposit and 70% against shipping documents is the industry norm for building trust.