239321
亚硫酸钠
ACS reagent, ≥98.0%
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关于此项目
线性分子式:
Na2SO3
化学文摘社编号:
分子量:
126.04
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
231-821-4
MDL number:
Assay:
≥98.0%
Grade:
ACS reagent
Form:
powder or crystals
Solubility:
water: soluble 126 g/L at 20 °C
产品名称
亚硫酸钠, ACS reagent, ≥98.0%
InChI key
GEHJYWRUCIMESM-UHFFFAOYSA-L
InChI
1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
SMILES string
[Na+].[Na+].[O-]S([O-])=O
grade
ACS reagent
agency
suitable for SM 5210
assay
≥98.0%
form
powder or crystals
impurities
Free acid, passes test
≤0.005% insolubles
≤0.03 meq/g Titr. free base
pH
9.0-10.5 (25 °C, 126 g/L)
solubility
water: soluble 126 g/L at 20 °C
anion traces
chloride (Cl-): ≤0.02%
cation traces
Fe: ≤0.001%
heavy metals (as Pb): ≤0.001%
Quality Level
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Application
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。
General description
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。
存储类别
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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