The preservative used in this product is sodium benzoate.

本产品防腐剂为苯甲酸钠。

The company said it recently shifted away from this preservative combination to one with sodium benzoate.

该公司表示，它最近已从这种防腐剂组合向苯甲酸钠。

So they make a salt of benzoic acid by reacting it with sodium hydroxide — aka lye or caustic soda — to make sodium benzoate.

所以他们通过与氢氧化钠——也就是碱液或苛性钠——反苯甲酸盐。

Sodium benzoate, for example, has been found to react with ascorbic acid — aka Vitamin C — to produce benzene, a hydrocarbon that's known to cause cancer.

例如，研究发现苯甲酸钠与抗坏血酸——也就是维素 C——反产苯，而苯是一种已知会导致癌症碳氢化合物。