Sudan red b

Sudan Red B is a synthetic fat-soluble dye primarily used for coloring industrial solvents, oils, waxes, petrol, and shoe polishes. In technical applications, it is valued for its high heat stability and excellent solubility in organic solvents. It is also utilized in the plastics industry for coloring polystyrene and polycarbonate materials.

As a chemical substance, Sudan Red B must be accompanied by a Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS). It is strictly prohibited for use in food products globally due to its carcinogenic potential. Buyers must ensure the product complies with REACH regulations (for EU markets) and is labeled with the correct GHS (Globally Harmonized System) hazard pictograms, specifically for skin sensitization and environmental toxicity.

Quality validation should focus on Dye Content (typically ≥95%) and insoluble matter levels. Buyers should request a Certificate of Analysis (COA) for every batch. Key performance indicators include lightfastness (rating 6-7) and heat resistance (up to 250°C-300°C). For large-scale procurement, performing a spectrophotometric analysis to ensure color consistency across batches is highly recommended.

Buyers must confirm the CAS Number (3176-79-2) to avoid confusion with other Sudan dyes. The melting point (approx. 180°C) and moisture content (<1%) are critical for applications in plastic masterbatches. Ensure the particle size is optimized for your specific machinery to prevent clogging in automated dosing systems.

Sudan Red B is often classified under HS Code 320419 (Other coloring matter). Since it is a chemical powder, it must be packed in UN-approved fiber drums or high-density polyethylene (HDPE) containers to prevent leakage. When shipping to international markets, ensure the carrier is experienced in handling non-hazardous or hazardous chemicals (depending on local classification) and provide a Non-Hazardous Cargo Declaration if applicable to expedite customs clearance.

To ensure transaction security, utilize Trade Assurance services provided by reputable platforms like Made-in-China.com. Never make full payments upfront; instead, use a 30% deposit and 70% balance payment structure against the Bill of Lading (B/L). Conduct a factory audit or hire a third-party inspector (like SGS or Intertek) to verify the supplier's production capacity and ISO 9001 certification before placing bulk orders.

The most significant risk is regulatory non-compliance. Because Sudan Red B is a restricted substance in many jurisdictions (especially regarding food contact materials), the buyer must provide a Letter of Intent (LOI) or an End-Use Certificate to the supplier. This protects the buyer by documenting that the chemical is intended for strictly industrial, non-food purposes, thereby aligning with international trade safety policies.

Pricing for Sudan Red B is sensitive to raw material costs (petrochemical derivatives). Negotiate based on volume tiers; for instance, ordering in 1-ton increments usually yields a 10-15% discount compared to smaller quantities. For new suppliers, request a paid sample (100g-500g) to test compatibility before committing to a high Minimum Order Quantity (MOQ).