31454
亚硫酸钠
puriss. p.a., reag. Ph. Eur., anhydrous, 98-100.0% (iodometric)
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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:
98-100.0% (iodometric)
Form:
solid
InChI key
GEHJYWRUCIMESM-UHFFFAOYSA-L
InChI
1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
SMILES string
[Na+].[Na+].[O-]S([O-])=O
agency
USP/NF, reag. Ph. Eur.
grade
puriss. p.a.
assay
98-100.0% (iodometric)
form
solid
impurities
≤0.001% heavy metals (as Pb), ≤0.02% thiosulfate (S2O3)
pH
9.0-10.5 (25 °C, 126 g/L)
anion traces
chloride (Cl-): ≤50 mg/kg
cation traces
As: ≤0.2 mg/kg, Ca: ≤50 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Pb: ≤5 mg/kg, Se: ≤10 mg/kg, Zn: ≤10 mg/kg
Quality Level
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General description
亚硫酸钠是一种无机钠盐。已经提出了快速混合方法来研究氧与亚硫酸钠之间反应的动力学。
Application
亚硫酸钠被用于制备基于小麦面筋的薄膜。
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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Barron CH and O'Hern HA.
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