... ≥ 118 ° C, insoluble in water, ethanol, soluble in hot organic solvents and acids. In case of cold jelly heating dissolved ... specific level; main dispersing agent, heat stabilizer used in the petrochemical industry, production of polyethylene, polystyrene, polyvinyl ... effectively isolate the agent, soluble in rubber, and the last to be absorbed in the rubber vulcanization process at high temperatures ...