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等級
ACS reagent
品質等級
agency
suitable for SM 5210
化驗
≥98.0%
形狀
powder or crystals
雜質
Free acid, passes test
≤0.005% insolubles
≤0.03 meq/g Titr. free base
pH值
9.0-10.5 (25 °C, 126 g/L)
溶解度
water: soluble 126 g/L at 20 °C
負離子痕跡
chloride (Cl-): ≤0.02%
正離子痕跡
Fe: ≤0.001%
heavy metals (as Pb): ≤0.001%
SMILES 字串
[Na+].[Na+].[O-]S([O-])=O
InChI
1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
InChI 密鑰
GEHJYWRUCIMESM-UHFFFAOYSA-L
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一般說明
亚硫酸钠是一种水溶性无机盐，常用作还原剂。它还用于磺化和磺甲基化反应。此外，它在纺织工业中用作漂白剂、脱硫剂和脱氯剂。在水处理过程，Na2SO3 被用作氧气和游离氯清除剂。亚硫酸钠通过与醛和酮形成加合物参与醛和酮的纯化和分离。其他用途包括生产硫代硫酸钠、洗涤剂和染料。
應用
亚硫酸钠可被用于：
- 芳基硼酸和芳基硼酸酯羟基化成相应酚类的还原剂。
- 将 α-氨基醇甲磺酸盐盐酸盐转化为 α-氨基磺酸钠过程中。
- 作为 SO2 前体用于多克合成DABCO（SO2）2 ，其缩写为DABSO。
儲存類別代碼
13 - Non Combustible Solids
水污染物質分類（WGK）
WGK 1
閃點（°F）
Not applicable
閃點（°C）
Not applicable
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