基本化(hua)(hua)學(xue)工(gong)(gong)(gong)業主(zhu)要(yao)產(chan)品(pin)中的(de)(de)鹽(yan)酸、燒堿、純堿、氯化(hua)(hua)銨、氯氣等(deng)主(zhu)要(yao)是用(yong)工(gong)(gong)(gong)業鹽(yan)為原料生產(chan)的(de)(de)。此(ci)外，還用(yong)于肥皂(zao)制造、陶瓷、玻璃(li)生產(chan)、日用(yong)化(hua)(hua)工(gong)(gong)(gong)、石油鉆(zhan)探、鉆(zhan)井工(gong)(gong)(gong)作液(ye)(ye)、完(wan)井液(ye)(ye)、石油化(hua)(hua)工(gong)(gong)(gong)脫(tuo)水(shui)(shui)液(ye)(ye)、建筑行業早強劑(ji)(ji)(ji)(ji)、生產(chan)涂(tu)料的(de)(de)凝固(gu)劑(ji)(ji)(ji)(ji)、橡膠(jiao)行業乳(ru)膠(jiao)凝結劑(ji)(ji)(ji)(ji)、造紙工(gong)(gong)(gong)業添加劑(ji)(ji)(ji)(ji)及(ji)廢紙張(zhang)脫(tuo)墨(mo)、化(hua)(hua)學(xue)工(gong)(gong)(gong)業的(de)(de)無機化(hua)(hua)工(gong)(gong)(gong)原料及(ji)硫酸根脫(tuo)除劑(ji)(ji)(ji)(ji)，褐藻酸鈉的(de)(de)凝固(gu)劑(ji)(ji)(ji)(ji)、防治小麥、蘋果、白(bai)菜等(deng)腐爛及(ji)食(shi)品(pin)防腐劑(ji)(ji)(ji)(ji)、制取金屬(shu)鈉及(ji)其他鈉化(hua)(hua)合物、鋼鐵熱處理介質等(deng)。在水(shui)(shui)處理、公路除雪、制冷(leng)(leng)冷(leng)(leng)藏等(deng)方面，鹽(yan)也有廣泛的(de)(de)用(yong)途。