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重要文件

13459

Sigma-Aldrich

偏亚硫酸氢钠

puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, E223, dry, 97-100.5%

同義詞:

偏二亚硫酸钠, 焦亚硫酸钠

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About This Item

線性公式:
Na2S2O5
CAS號碼:
分子量::
190.11
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.21

等級

puriss.

品質等級

化驗

97-100.5%

形狀

powder or crystals

品質

dry
meets analytical specification of Ph. Eur., BP, NF, FCC, E223

成份

SO2, 65.0-67.4%

雜質

residue of solvents, complies
≤0.02% thiosulfate (S2O3)

pH值

3.5-5.0 (20 °C, 5%)

mp

>300 °C (lit.)

負離子痕跡

chloride (Cl-): ≤100 mg/kg

正離子痕跡

As: ≤2 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤2 mg/kg
Se: ≤5 mg/kg
Zn: ≤10 mg/kg

適合性

complies for appearance of solution

SMILES 字串

[Na+].[Na+].[O-]S(=O)S([O-])(=O)=O

InChI

1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

InChI 密鑰

HRZFUMHJMZEROT-UHFFFAOYSA-L

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一般說明

偏亚硫酸氢钠(MBS,亚硫酸氢钠)是一种无机盐。它是亚硫酸的钠盐。在纺织和摄影行业,这种盐广泛用作还原剂。它通常作为防腐剂添加到各种食品和葡萄酒中。

應用

通过溶液中的自由基聚合时,亚硫酸氢钠可用于引发囊泡膜中心的聚丁二烯交联。 在各种研究中,在制备 6-羟基多巴胺储备液过程中,可以添加偏亚硫酸氢钠作为氧化剂。

象形圖

CorrosionExclamation mark

訊號詞

Danger

危險聲明

危險分類

Acute Tox. 4 Oral - Eye Dam. 1

安全危害

儲存類別代碼

11 - 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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