71989
亚硫酸钠
puriss. p.a., ACS reagent, anhydrous, ≥98.0% (RT)
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关于此项目
线性分子式:
Na2SO3
化学文摘社编号:
分子量:
126.04
UNSPSC Code:
12352300
PubChem Substance ID:
EC Number:
231-821-4
MDL number:
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
grade
ACS reagent, puriss. p.a.
assay
≥98.0% (RT)
solubility
water: soluble 126 g/L at 20 °C
anion traces
chloride (Cl-): ≤50 mg/kg, thiosulfate (S2O32-): ≤200 mg/kg
cation traces
As: ≤0.1 mg/kg, Ca: ≤50 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤200 mg/kg, Mg: ≤20 mg/kg, Mn: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
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General description
Sodium sulfite is an inorganic sodium salt. Rapid-mixing method has been proposed to investigate kinetics of the reaction between oxygen and sodium sulfite.
Application
Sodium sulfite may be used in the preparation of wheat gluten films.
Other Notes
A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.
supp_hazards
存储类别
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Gloves
法规信息
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New plasticizers for wheat gluten films.
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Reaction kinetics of sodium sulfite oxidation by the rapid-mixing method.
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Agave americana is one of commonly grown agave species but currently less valuable because its large flower stalk cannot be used for producing alcoholic beverage. In the present study, the stalk was pretreated with dilute acid (DA), sulfite (SPORL), and
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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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