A food-grade PVC stabilizer is not just a marketing label — it must satisfy a complex web of global regulations including EU ROHS, EU 10/2011 plastic food contact regulation, U.S. FDA 21 CFR 178.2650, and China GB 9685. Key criteria include:

• Heavy metal limits: Cadmium, lead, mercury, hexavalent chromium must be below detection
• Phthalate restriction: 16+ phthalate items must not migrate
• Overall migration limits: Total migration into food simulants must not exceed 10 mg/dm²
• Organotin type: Methyl and octyl tin are approved; butyl tin is restricted in food contact

Unistars XY-728 is our food-contact-grade methyl tin stabilizer, tested to ASTM D3421-75 with all 16 phthalates below MDL. It is the preferred choice for transparent food packaging, medical blister packs, and drinking water pipes.