Maleic anhydride

Description

1. Product Overview

Maleic Anhydride is a versatile organic intermediate derived from n-butane oxidation, essential for producing unsaturated polyester resins (UPR), fumaric acid, and fuel additives. Its high reactivity and anhydride functionality deliver superior cross-linking density and thermal performance in end products. As a critical raw material for construction, automotive, and marine coatings, securing consistent Maleic Anhydride supply directly impacts downstream formulation stability and cost control. For industrial buyers, this product represents a non-negotiable lever for maintaining output quality and margin predictability.

2. Key Specifications & Technical Characteristics

• Chemical composition: C₄H₂O₃ (CAS 108-31-6), derived from n-butane catalytic oxidation

• Purity level: 99.8% minimum (industrial grade); molten and flake forms available

• Physical characteristics: White crystalline flakes (or clear molten liquid at >52°C), acrid odor, density 1.48 g/cm³ (solid), melting point 52.8°C

• Packaging options: 25 kg moisture-proof kraft bags, 500 kg semi-bulk bags, ISO tanks (molten), and 1 MT big bags

• Shelf life: 12 months in original sealed packaging under dry, ventilated conditions (≤30°C)

3. Core Industrial Applications

• Unsaturated Polyester Resins (UPR): Primary use (over 50% of global consumption) for fiberglass-reinforced plastics in marine hulls, automotive body panels, and construction panels – delivers higher tensile strength and corrosion resistance vs. phthalic anhydride alternatives.

• Lubricant & Fuel Additives: Production of alkenyl succinic anhydrides for engine oil detergents – provides superior thermal stability over polyisobutylene-based additives.

• Copolymer & Coating Intermediates: Manufacture of maleic copolymers for water treatment chemicals and paper sizing agents – enables lower VOC formulations compared to styrene-heavy systems.

4. Competitive Advantages

• Quality consistency: ISO 9001:2025 certified with batch-to-batch purity variance <0.05%; FTIR and titration QC data included per lot.

• Supply reliability: Dual-sourced feedstock (n-butane from Middle East & North America) with 30,000 MT annual dedicated capacity; 98% on-time fulfillment record.

• Logistics capability: Molten ISO tank delivery (heating coils) and moisture-sealed flake packaging available ex-warehouse Rotterdam, Houston, and Shanghai.

• Cost competitiveness: Direct sourcing from integrated production units – no trader markup; volume-based discounts from 500 MT/year.

• Sustainability: Over 98% conversion efficiency with minimized maleic/fumaric acid byproducts; recyclable packaging options and Responsible Care® compliance.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 20 MT (bulk)

• Loading capacity: 20–24 MT per 20’ dry container (flake); 24 MT per ISO tank (molten)