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12619

Sigma-Aldrich

焦亚硫酸钾

puriss., meets analytical specification of Ph.Eur., BP, NF, FCC, E224, 95.0-101.0% (iodometric), powder, 51.8-57.6% sulfur dioxide

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别名:
偏硫代硫酸钾, 偏重亚硫酸钾
线性分子式:
K2S2O5
CAS号:
16731-55-8
分子量:
222.32
EC 号:
240-795-3
MDL编号:
MFCD00167605
PubChem化学物质编号:
329749774
NACRES:
NA.21

等级

puriss.

质量水平

100

检测方案

95.0-101.0% (iodometric)

形式

powder

质量

meets analytical specification of Ph.Eur., BP, NF, FCC, E224

杂质

organic volatile impurities, complies (GC)
 residual solvents, in accordance
≤0.001% heavy metals (as Pb)
≤0.08% thiosulfate (S2O3)
51.8-57.6% sulfur dioxide

pH值（酸碱度）

3.5-4.5 (20 °C, 5%)

痕量阴离子

chloride (Cl-): ≤100 mg/kg

痕量阳离子

As: ≤2 mg/kg
Cu: ≤20 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤2 mg/kg
Se: ≤5 mg/kg
Zn: ≤20 mg/kg

适用性

in accordance for appearance of solution

SMILES字符串

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

InChI

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

InChI key

RWPGFSMJFRPDDP-UHFFFAOYSA-L

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相关类别

象形图

CorrosionExclamation mark
GHS05,GHS07

警示用语：

Danger

危险声明

H318 - H335

危险分类

Eye Dam. 1 - STOT SE 3

靶器官

Respiratory system

补充剂危害

EUH031

储存分类代码

13 - Non Combustible Solids

WGK

WGK 1

法规信息

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