gum rosin

gum rosin 1.Properties and uses Gum rosin is a kind of natural resin, a mixture with various organic acids, and with special chemical activity, and important chemicals for paper-making, soap, paint, ink, adhesive, rubber, food, synthetic resin, electric insulating material and building industries. 2.Specifications (National Std UDC GB/T8145-2003) ItemGrade and RequirementsXWWWGNMKColorslightly yellowpale yellowyellowdeep yellowyellow brownyellow redCorrespond to the standard glass color piece of rosinAppearancetransparent solidSoftening Point (ball & ring)76 °C min75 °C min74 °C minAcid No. ( mgKOH/g )166 min165 min164 minUnsaponifiable Material5% maxAlcohol Insoluble Material0.03 % max0.04 % maxAsh ( % ) , max0.020.030.04 · Packing and storage The product is packed in galvanized iron drum, net weight 225kgs/drum. The product must be kept in dark and cool place, away from water and fire.