- Product Name HBCD-Free Extruded Polystyrene (XPS) Flame Retardant Masterbatch/MH-68T - Advantages: HBCD-Free, High heat resistance (240�¢??min), Good smoke-suppression performance, No corrosion to the screw, Better flow properties, Improve the melt viscosity, strength and sheet bulk density, Provide better mechanical properties. - Application: Fire-resistance for extruded polystyrene (XPS). - Specification: Appearance: Spherical Granules Main Content:50%min Moisture:3000ppm max Density: 1.4±0.2 g/cm3 Recommended: 1.8-2.2% E; 3-4% B2; 4-5% B1 - Package and Storage: 25kgs kraft bag with plastic lining. Keep in a dry and cool place.