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Merck

239321

Sigma-Aldrich

亚硫酸钠

ACS reagent, ≥98.0%

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About This Item

线性分子式:
Na2SO3
CAS号:
分子量:
126.04
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.21

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(SO22 ,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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Reaction kinetics of sodium sulfite oxidation by the rapid-mixing method.
Barron CH and O'Hern HA.
Chemical Engineering Science, 21(5), 397-404 (1966)
New plasticizers for wheat gluten films.
Irissin-Mangata J, et al.
European Polymer Journal, 37(8), 1533-1541 (2001)
Amber R Boles et al.
Biotechnology and bioengineering, 109(3), 637-646 (2011-10-22)
A novel sulfur-utilizing perchlorate reducing bacterial consortium successfully treated perchlorate (ClO₄⁻) in prior batch and bench-scale packed bed reactor (PBR) studies. This study examined the scale up of this process for treatment of water from a ClO ₄⁻ and RDX contaminated
Yisu Han et al.
ACS chemical biology, 14(4), 619-635 (2019-03-09)
APEX is an engineered peroxidase that catalyzes the oxidation of a wide range of substrates, facilitating its use in a variety of applications from subcellular staining for electron microscopy to proximity biotinylation for spatial proteomics and transcriptomics. To further advance
Fabian Leinisch et al.
Chemical research in toxicology, 24(12), 2217-2226 (2011-10-19)
Nitrone spin traps such as 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) are commonly used for free radical detection. Though proven examples are rare, artifact formation must be considered. For example, the Forrester-Hepburn mechanism yields the same radical adduct as that formed by genuine radical

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This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.

This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.

This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.

This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.

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