13459
偏亚硫酸氢钠
puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, E223, dry, 97-100.5%
别名:
偏二亚硫酸钠, 焦亚硫酸钠
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关于此项目
线性分子式:
Na2S2O5
化学文摘社编号:
分子量:
190.11
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
231-673-0
MDL number:
Assay:
97-100.5%
Form:
powder or crystals
产品名称
偏亚硫酸氢钠, puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, E223, dry, 97-100.5%
InChI key
HRZFUMHJMZEROT-UHFFFAOYSA-L
InChI
1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
SMILES string
[Na+].[Na+].[O-]S(=O)S([O-])(=O)=O
grade
puriss.
assay
97-100.5%
form
powder or crystals
quality
dry
meets analytical specification of Ph. Eur., BP, NF, FCC, E223
composition
SO2, 65.0-67.4%
impurities
residue of solvents, complies
≤0.02% thiosulfate (S2O3)
pH
3.5-5.0 (20 °C, 5%)
mp
>300 °C (lit.)
anion traces
chloride (Cl-): ≤100 mg/kg
cation traces
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
suitability
complies for appearance of solution
Quality Level
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Application
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。
General description
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。
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1
supp_hazards
存储类别
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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Eagleson M.
Concise Encyclopedia Chemistry, 337-337 (1994)
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