Rubber antioxidant mb

Rubber Antioxidant MB is a non-staining secondary antioxidant primarily used to protect rubber products from heat-oxygen aging and copper-induced degradation. It is highly valued for its ability to provide synergistic effects when used in combination with other antioxidants like 4010NA or RD. It is particularly effective in transparent, white, and brightly colored rubber products because it does not cause discoloration or pollution.

Buyers must focus on the purity level (typically ≥98%), melting point (initial M.P. ≥285°C), and ash content (≤0.5%). For high-precision manufacturing, the fineness (residue on 150μm sieve ≤0.1%) is critical to ensure uniform dispersion within the rubber matrix. Always request a Certificate of Analysis (COA) for every batch to verify these parameters.

It is widely used in natural rubber (NR), styrene-butadiene rubber (SBR), and nitrile rubber (NBR). Common applications include wire and cable insulation, heat-resistant hoses, and medical rubber components. Buyers should ensure the product is compatible with their specific vulcanization system, as MB can slightly retard the vulcanization process in some formulations.

The product must comply with REACH regulations for the EU market and TSCA for the US. Since it is a chemical powder, it must have a valid Material Safety Data Sheet (MSDS/SDS). For products used in food-contact or medical applications, ensure the supplier adheres to FDA 21 CFR 177.2600 or equivalent local health standards.

Utilize third-party inspection services (such as SGS or Intertek) to conduct pre-shipment sampling and testing. On Made-in-China.com, prioritize Audited Suppliers who have undergone rigorous on-site verification of their production facilities and quality management systems.

Focus on long-term volume contracts rather than spot purchases to secure stable pricing amidst raw material fluctuations. Negotiate for tiered pricing based on annual volume and request free samples (500g-1kg) for laboratory testing before committing to a full container load (FCL).

The product is sensitive to moisture and heat. Ensure the shipping terms specify cool, dry, and ventilated storage. Packaging should be moisture-proof (PE-lined woven bags or kraft paper bags). For cross-border shipping, verify the HS Code (typically 2933.99) to ensure accurate customs declaration and avoid delays.

Always use secure payment methods such as Letters of Credit (L/C) for large orders or Escrow services provided by reputable platforms. Avoid direct wire transfers to unknown accounts. Ensure all Incoterms (e.g., FOB, CIF) are clearly defined in the sales contract to establish the point of risk transfer.