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Merck
CN

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
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grade

ACS reagent

Quality Level

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%

SMILES string

[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 key

GEHJYWRUCIMESM-UHFFFAOYSA-L

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。

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(SO22 ,其缩写为DABSO。



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存储类别

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable



历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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全球贸易项目编号

货号GTIN
239321-500G04061838787514
239321-2.5KG04061837768958