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碳(tan)酸(suan)(suan)氫鈉(na)可直接作為制(zhi)藥(yao)工(gong)(gong)業(ye)的(de)原料(liao)，用(yong)于(yu)(yu)治療胃酸(suan)(suan)過多(duo)。還可用(yong)于(yu)(yu)電(dian)影(ying)制(zhi)片(pian)、鞣革、選礦、冶煉、金屬熱處理，以及用(yong)于(yu)(yu)纖維(wei)、橡(xiang)膠(jiao)工(gong)(gong)業(ye)等。同時用(yong)作羊毛的(de)洗滌(di)劑(ji)，以及用(yong)于(yu)(yu)農(nong)業(ye)浸種等。食品(pin)工(gong)(gong)業(ye)中(zhong)- -種應(ying)用(yong)最廣泛(fan)的(de)疏松劑(ji)，用(yong)于(yu)(yu)生產(chan)(chan)(chan)(chan)餅(bing)干、糕點(dian)、饅頭、面包等，是汽水飲料(liao)中(zhong)二氧化碳(tan)的(de)發(fa)(fa)生劑(ji);可與(yu)明(ming)礬復合(he)為堿性(xing)發(fa)(fa)酵(jiao)粉，也可與(yu)純堿復合(he)為民(min)用(yong)石(shi)堿;還可用(yong)作黃油保存劑(ji)。消(xiao)防器(qi)(qi)材中(zhong)用(yong)于(yu)(yu)生產(chan)(chan)(chan)(chan)酸(suan)(suan)堿滅(mie)火器(qi)(qi)和泡(pao)沫滅(mie)火器(qi)(qi)。橡(xiang)膠(jiao)工(gong)(gong)業(ye)利用(yong)其與(yu)明(ming)礬、碳(tan)酸(suan)(suan)氫鈉(na)發(fa)(fa)孔劑(ji)配合(he)起均勻發(fa)(fa)孔的(de)作用(yong)用(yong)于(yu)(yu)橡(xiang)膠(jiao)、海棉生產(chan)(chan)(chan)(chan)。冶金工(gong)(gong)業(ye)用(yong)作澆(jiao)鑄鋼錠的(de)助(zhu)熔劑(ji)。機(ji)械_工(gong)(gong)業(ye)用(yong)作鑄鋼(翻砂(sha))砂(sha)型的(de)成(cheng)型助(zhu)劑(ji)。印染(ran)工(gong)(gong)業(ye)用(yong)作染(ran)色(se)印花的(de)固色(se)劑(ji)，酸(suan)(suan)堿緩沖劑(ji)，織物染(ran)整(zheng)的(de)后方處理劑(ji)。染(ran)色(se)中(zhong)加入小蘇打可以防止紗筒(tong)產(chan)(chan)(chan)(chan)生色(se)花。醫(yi)藥(yao)工(gong)(gong)業(ye)用(yong)作制(zhi)酸(suan)(suan)劑(ji)的(de)原料(liao)