重1.42-1.52，熔點170℃以上，易溶于乙酸乙酯、丙酮、氫氧化鈉及碳酸鈉的稀溶液中，溶于乙醇，不易溶于苯，不溶于水和汽油。貯存穩定，呈現粉塵時，爆炸下限為21g/m3.
Properties: It is yellow powder with little osmyl and taste bitter. The density is 1.42-1.52. Soluble in ethyl acetate、ethanol，solution of NaOH and Na2CO3， unsoluble in benzene、water and gasoline. Good storage stability. Lower explosion limit is 21g/m3.
用途:主要用于制造輪胎、內胎、膠帶、膠鞋和其它工業橡膠制品.
Usage:mainly used to make t