Specifications: Volatile content:2.0 Organic acid:2.3 Organic soap:0.1 Styrene content:62 Tensil strength(Mpa):8.2 Shore Hardness A:98 ML degree(mooney viscosity):45-60 25KG in composite bag(plastic film+fabrics) lined kraft paper. Stored in clean place, avoid fire, insolation, dust and heat, the max pile is less than 20 bags.