基本化(hua)學工(gong)(gong)業(ye)主要產(chan)品中的鹽(yan)酸、燒堿(jian)、純堿(jian)、氯化(hua)銨、氯氣等主要是用(yong)工(gong)(gong)業(ye)鹽(yan)為原(yuan)料(liao)生產(chan)的。此外(wai),還用(yong)于肥(fei)皂制(zhi)造、陶瓷、玻璃生產(chan)、日用(yong)化(hua)工(gong)(gong)、石(shi)油(you)鉆探(tan)、鉆井工(gong)(gong)作(zuo)液、完井液、石(shi)油(you)化(hua)工(gong)(gong)脫(tuo)(tuo)水液、建筑行(xing)業(ye)早強劑(ji)、生產(chan)涂(tu)料(liao)的凝固(gu)劑(ji)、橡膠行(xing)業(ye)乳膠凝結劑(ji)、造紙工(gong)(gong)業(ye)添加劑(ji)及廢紙張脫(tuo)(tuo)墨、化(hua)學工(gong)(gong)業(ye)的無機化(hua)工(gong)(gong)原(yuan)料(liao)及硫酸根脫(tuo)(tuo)除(chu)劑(ji),褐藻酸鈉的凝固(gu)劑(ji)、防(fang)治小(xiao)麥(mai)、蘋果(guo)、白菜等腐爛及食品防(fang)腐劑(ji)、制(zhi)取金屬鈉及其他鈉化(hua)合(he)物(wu)、鋼鐵熱處(chu)理介質(zhi)等。在水處(chu)理、公路除(chu)雪、制(zhi)冷冷藏等方面,鹽(yan)也有廣泛(fan)的用(yong)途。