... , light color or transparent articles. Storage:CIS-1, 4-POLYISOPRENE.IR should be stored in ventilating warehouses at temperature not ... storage conditions. Safety and Handling Precautions:CIS-1, 4-POLYISOPRENE.IR may accumulate electrostatic charges when rubbed, chafed or abraded ... charges that may develop. When processing CIS-1, 4-POLYISOPRENE.IR, maintain a fire watch if temperature reaches 225 ° ...