硝酸鈉，熔點為306.8℃，密度為2.257克/立方厘米（20℃時），weiwusetouminghuobaiweidaihuangselingxingjingti。qiweikuxian，yirongyushuiheyean
，weirongyuganyouheyichunzhong
，yichaojie，tebiezaihanyoujishaolianglvhuanazazhishi
，xiaosuannachaojiexingjiudaweizengjia。dangrongjieyushuishiqirongyewendujiangdi，rongyechengzhongxing。zaijiareshi
，xiaosuannayifenjiechengyaxiaosuannaheyangqi。xiaosuannakezhuran，xucunchuzaiyinliangtongfengdedifang。youyanghuaxing
，yuyoujiwumocahuozhuangjinengyinqiranshaohuobaozha。

    搪瓷工業用作助熔劑
、氧化劑和用於配製琺琅粉的原料。玻璃工業用作各種玻璃及製品的脫色劑、消泡劑、澄cheng清qing劑ji及ji氧yang化hua助zhu熔rong劑ji。無wu機ji工gong業ye用yong作zuo熔rong融rong燒shao堿jian的de脫tuo色se劑ji和he用yong於yu製zhi造zao其qi他ta硝xiao酸suan鹽yan類lei。食shi品pin工gong業ye用yong作zuo肉rou類lei加jia工gong的de發fa色se劑ji，可ke防fang止zhi肉rou類lei變bian質zhi，並bing能neng起qi調tiao味wei作zuo用yong。化hua肥fei工gong業ye用yong作zuo適shi用yong酸suan性xing土tu壤rang的de速su效xiao肥fei料liao，特te別bie適shi用yong塊kuai根gen作zuo物wu
，如ru甜tian菜cai、蘿卜等。染料工業用作生產苦味酸和染料的原料。冶金工業用作煉鋼、鋁(lv)合(he)金(jin)的(de)熱(re)處(chu)理(li)劑(ji)。機(ji)城(cheng)工(gong)業(ye)用(yong)作(zuo)金(jin)屬(shu)清(qing)洗(xi)劑(ji)和(he)配(pei)製(zhi)黑(hei)色(se)金(jin)屬(shu)發(fa)藍(lan)劑(ji)。醫(yi)藥(yao)工(gong)業(ye)用(yong)作(zuo)青(qing)黴(mei)素(su)的(de)培(pei)養(yang)基(ji)。卷(juan)煙(yan)工(gong)業(ye)用(yong)作(zuo)煙(yan)草(cao)的(de)助(zhu)燃(ran)劑(ji)。分(fen)析(xi)化(hua)學(xue)中(zhong)用(yong)作(zuo)化(hua)學(xue)試(shi)劑(ji)。此(ci)外(wai)，也(ye)用(yong)於(yu)生(sheng)產(chan)炸(zha)藥(yao)等(deng)。化(hua)學(xue)純(chun)的(de)硝(xiao)酸(suan)鈉(na)用(yong)於(yu)鍍(du)鋅(xin)層(ceng)的(de)低(di)鉻(ge)酸(suan)鈍(dun)化(hua)和(he)鎂(mei)合(he)金(jin)的(de)氧(yang)化(hua)溶(rong)液(ye)中(zhong)。