Phthalic Anhydride (PA)

Keep solid PA dry, sealed, cool and ventilated, protected from moisture and strong oxidisers. For molten storage, use purpose-designed heated systems with temperature control, insulation and appropriate relief. Prevent dust/vapour exposure and follow the current SDS. Because transport is regulated as UN 2214 in standard frameworks, verify package and mode-specific requirements before shipment.

HSE control principle:

Use the current product-specific SDS, local dangerous-goods requirements, receiving-site risk assessment and applicable engineering standards. Website text should never substitute for a supplier SDS or site procedure.

• Solid flakes/FIBC or molten bulk
• Minimum purity and maximum moisture
• Maleic anhydride / colour limits if critical
• Packaging size and liner specification
• Molten storage/unloading temperature if bulk
• Batch COA and analytical methods
• UN 2214 dangerous-goods documentation and route requirements

A technically meaningful RFQ should define the key quality parameters affecting process performance. Typical COA requirements include purity, anhydride/acid value, maleic anhydride content, molten colour, moisture, solidification point, and ash/residue, measured by suitable methods such as GC, titration, Karl Fischer, APHA/Hazen, ASTM, or supplier-standard methods.

These parameters control assay, reactive content, oxidation-related impurities, resin/product colour, hydrolysis risk, purity, and non-volatile contamination. Final testing requirements should be aligned with the producer specification, customer requirements, and intended application.