產品介紹
無水亞硫酸鈉
基本信息
無(wu)水(shui)(shui)(shui)亞(ya)硫(liu)(liu)(liu)酸(suan)鈉,為白色結晶或(huo)粉末;無(wu)臭。 本品在(zai)水(shui)(shui)(shui)中易溶(rong)(rong)(rong),在(zai)乙(yi)醇(chun)中極微溶(rong)(rong)(rong)解(jie)。溶(rong)(rong)(rong)于水(shui)(shui)(shui)(0℃時(shi)(shi),12.54g/100ml水(shui)(shui)(shui);80℃時(shi)(shi)28.3g/100ml水(shui)(shui)(shui)),在(zai)33.4℃時(shi)(shi)溶(rong)(rong)(rong)解(jie)度約為28%,水(shui)(shui)(shui)溶(rong)(rong)(rong)液呈堿性,PH值約為9~9.5。微溶(rong)(rong)(rong)于醇(chun),不(bu)溶(rong)(rong)(rong)于氨。在(zai)空(kong)氣(qi)中易被氧化(hua)成硫(liu)(liu)(liu)酸(suan)鈉,遇高(gao)溫則分(fen)解(jie)成硫(liu)(liu)(liu)化(hua)鈉。為強(qiang)化(hua)還原劑(ji),與二氧化(hua)硫(liu)(liu)(liu)作用生(sheng)成亞(ya)硫(liu)(liu)(liu)酸(suan)氫鈉,與強(qiang)酸(suan)反(fan)應(ying)(ying)生(sheng)成相應(ying)(ying)鹽(yan)。
指標
用途
1.無水亞硫酸鈉用于膠片(pian)顯影(ying)
2,化(hua)學工業用(yong)作還原(yuan)劑和(he)磺(huang)化(hua)劑;
3.印染工業的脫(tuo)氯劑(ji)(ji)和漂白劑(ji)(ji);
4.化學纖(xian)維的穩定劑(ji)等(deng)等(deng)。
儲運注意
儲(chu)存于(yu)陰涼、干燥通風倉庫內。遠(yuan)離火(huo)種熱源。包裝要(yao)求(qiu)密封,不(bu)可(ke)與空(kong)氣接觸(chu)。不(bu)可(ke)與氧(yang)化劑(ji)、強酸類(lei)物品及有害物質(zhi)共儲(chu)運。本品有潮(chao)解性(xing),不(bu)宜久儲(chu)。運輸(shu)時要(yao)防(fang)雨淋和日(ri)光暴曬。