Why is paraformaldehyde classified as dangerous goods and what does export compliance involve?

Paraformaldehyde is a Class 4.1 flammable solid under UN2213, packing group III, with a flash point of 71.1°C. It releases formaldehyde gas when heated, posing irritation and fire risks. Exporting from China requires a full compliance package: a 16-section MSDS, a hazardous characteristics classification report from an authorized body like CCIC or Shanghai Chemical Institute, and a dangerous goods packaging certificate confirming the bags meet IMDG standards. Shipments must be stuffed at a maritime-approved dangerous goods warehouse, not a regular depot. Vessel booking needs the UN number, class, and packaging details, with strict segregation from oxidizers and foodstuffs. VGM submission is mandatory before loading. For a 20GP container to Durban, cargo must be stacked evenly and secured with safety netting to prevent shifting during ocean transit.