Catechol

Catechol is a critical intermediate used primarily in the production of pesticides (such as Carbofuran and Propoxur), flavors and fragrances (like Vanillin and Ethylvanillin), and pharmaceuticals. It also serves as a specialized antioxidant in the rubber and chemical industries and as a developer in photography. Buyers must ensure the purity grade (typically ≥99%) aligns with their specific end-use requirements to avoid chemical interference.

Buyers should demand a Certificate of Analysis (COA) for every batch. Key parameters include Purity (GC analysis), Melting Point (typically 103-106°C), and Moisture Content (≤0.5%). For high-end applications like pharmaceuticals, monitoring heavy metal impurities and ash content is essential. Ensure the product is supplied in flakes or crystalline form depending on your processing equipment's requirements.

As a hazardous chemical, Catechol must be accompanied by a Safety Data Sheet (SDS/MSDS) compliant with GHS standards. For international trade, verify the supplier's ISO 9001 (Quality Management) and ISO 14001 (Environmental Management) certifications. If exporting to Europe, ensure the supplier is REACH registered; for the US, compliance with TSCA (Toxic Substances Control Act) is mandatory.

Catechol is sensitive to light and air, which can cause it to oxidize and turn brown. It must be packed in fiber drums with double-layer anti-static PE bags or UV-protected containers. Storage must be in a cool, dry, and well-ventilated warehouse away from oxidizing agents. Buyers should confirm that the supplier uses nitrogen-blanketing during packaging to extend shelf life and maintain color stability.

Catechol is classified under UN Number 2811 (Toxic Solid, Organic, N.O.S.), Class 6.1. It requires specialized dangerous goods (DG) handling. You must work with freight forwarders experienced in IMO Class 6.1 shipments. Ensure the supplier provides a Dangerous Goods Declaration and that the packaging meets UN-certified standards to prevent leaks during sea or air transit.

Utilize Made-in-China.com's 'Audited Supplier' reports to verify the manufacturer's production capacity and legal existence. For large orders, implement a staged payment structure (e.g., 30% deposit, 70% against BL) and consider third-party pre-shipment inspections (SGS or Intertek) to verify chemical purity and weight before the goods leave the factory.

The price of Catechol is highly sensitive to the cost of Phenol (raw material) and environmental regulation shifts in the manufacturing region. Avoid 'too-good-to-be-true' low prices, which often indicate recycled or sub-standard purity. Negotiate based on volume-based pricing tiers and seek long-term supply contracts to hedge against market price volatility.

Check for Anti-dumping duties (ADD) or Countervailing duties (CVD) that your specific country may impose on chemical imports from certain regions. Additionally, ensure the HS Code (typically 290729) is correctly declared to avoid customs delays or incorrect tariff applications at the port of entry.