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Merck
CN

13471

Sodium sulfite

puriss., meets analytical specification of Ph. Eur., BP, NF, anhydrous, 95.0-100.0% (iodometric)

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About This Item

Linear Formula:
Na2SO3
CAS Number:
7757-83-7
Molecular Weight:
126.04
NACRES:
NA.22
PubChem Substance ID:
329750185
UNSPSC Code:
12352302
EC Number:
231-821-4
MDL number:
MFCD00003503
Assay:
95.0-100.0% (iodometric)
Form:
solid

Key Documents

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Product Name

Sodium sulfite, puriss., meets analytical specification of Ph. Eur., BP, NF, anhydrous, 95.0-100.0% (iodometric)

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

puriss.

assay

95.0-100.0% (iodometric)

form

solid

quality

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

impurities

residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.05% thiosulfate (S2O3)

pH

9.0-10.5 (25 °C, 126 g/L)

anion traces

chloride (Cl-): ≤200 mg/kg

cation traces

Fe: ≤10 mg/kg
Se: ≤10 mg/kg
Zn: ≤10 mg/kg

suitability

complies for appearance of solution

Quality Level

100

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Related Categories

supp_hazards

EUH031

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
STBK9566
STBL4780
STBK8585
STBK5651
STBK5131

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