- 31454
31454
Sodium sulfite
puriss. p.a., reag. Ph. Eur., anhydrous, 98-100.0% (iodometric)
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Agency
USP/NF
reag. Ph. Eur.
Quality Level
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
SMILES string
[Na+].[Na+].[O-]S([O-])=O
InChI
1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
InChI key
GEHJYWRUCIMESM-UHFFFAOYSA-L
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This Item | 239321 | 13471 | 901916 |
|---|---|---|---|
| grade puriss. p.a. | grade - | grade puriss. | grade - |
| assay 98-100.0% (iodometric) | assay ≥98.0% | assay 95.0-100.0% (iodometric) | assay ≥98% |
| form solid | form powder or crystals | form solid | form powder or crystals |
| impurities ≤0.001% heavy metals (as Pb), ≤0.02% thiosulfate (S2O3) | impurities Free acid, passes test, ≤0.005% insolubles, ≤0.03 meq/g Titr. free base | impurities residual solvents, complies, ≤0.001% heavy metals (as Pb), ≤0.05% thiosulfate (S2O3) | impurities - |
| pH 9.0-10.5 (25 °C, 126 g/L) | pH 9.0-10.5 (25 °C, 126 g/L) | pH 9.0-10.5 (25 °C, 126 g/L) | pH 9-10.5 (25 °C, 126 g/L) |
| anion traces chloride (Cl-): ≤50 mg/kg | anion traces chloride (Cl-): ≤0.02% | anion traces chloride (Cl-): ≤200 mg/kg | anion traces - |
General description
Application
Supplementary Hazards
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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