基本化(hua)學工(gong)(gong)(gong)業(ye)(ye)主要產(chan)品中的(de)鹽(yan)酸(suan)(suan)、燒(shao)堿(jian)、純堿(jian)、氯化(hua)銨、氯氣(qi)等(deng)(deng)主要是用工(gong)(gong)(gong)業(ye)(ye)鹽(yan)為原料生(sheng)產(chan)的(de)。此外(wai)，還用于肥皂制造、陶瓷、玻(bo)璃(li)生(sheng)產(chan)、日(ri)用化(hua)工(gong)(gong)(gong)、石(shi)油鉆(zhan)探、鉆(zhan)井(jing)工(gong)(gong)(gong)作液(ye)、完井(jing)液(ye)、石(shi)油化(hua)工(gong)(gong)(gong)脫水(shui)液(ye)、建筑(zhu)行業(ye)(ye)早強劑(ji)、生(sheng)產(chan)涂料的(de)凝(ning)固劑(ji)、橡膠行業(ye)(ye)乳膠凝(ning)結劑(ji)、造紙工(gong)(gong)(gong)業(ye)(ye)添加劑(ji)及(ji)(ji)廢紙張脫墨(mo)、化(hua)學工(gong)(gong)(gong)業(ye)(ye)的(de)無機化(hua)工(gong)(gong)(gong)原料及(ji)(ji)硫酸(suan)(suan)根脫除劑(ji)，褐藻酸(suan)(suan)鈉(na)的(de)凝(ning)固劑(ji)、防治小麥、蘋果、白菜等(deng)(deng)腐(fu)爛及(ji)(ji)食(shi)品防腐(fu)劑(ji)、制取金(jin)屬鈉(na)及(ji)(ji)其他鈉(na)化(hua)合物、鋼鐵熱處理(li)介質等(deng)(deng)。在水(shui)處理(li)、公路除雪、制冷(leng)冷(leng)藏等(deng)(deng)方面，鹽(yan)也有(you)廣泛的(de)用途(tu)。