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71699

Sigma-Aldrich

Sodium hydrosulfite

≥82% (RT)

Synonym(s):
Sodium dithionite, Sodium hypodisulfite
Linear Formula:
NaO2SSO2Na
CAS Number:
Molecular Weight:
174.11
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

Assay

≥82% (RT)

form

powder

anion traces

chloride (Cl-): ≤50 mg/kg

cation traces

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: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

[Na+].[Na+].[O-]S(=O)S([O-])=O

InChI

1S/2Na.H2O4S2/c;;1-5(2)6(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2

InChI key

JVBXVOWTABLYPX-UHFFFAOYSA-L

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1579531.065281.93642
Sodium hydrosulfite ≥82% (RT)

Sigma-Aldrich

71699

Sodium hydrosulfite

Sodium hydrosulfite technical grade

Sigma-Aldrich

157953

Sodium hydrosulfite

Sodium disulfite (sodium metabisulfite) for analysis EMSURE® ACS,Reag. Ph Eur

Supelco

1.06528

Sodium disulfite

Supelco

Supelco

1.93642

Sodium disulfite

assay

≥82% (RT)

assay

≥82.5% (iodometric)

assay

98.0-100.5% (iodometric)

assay

-

form

powder

form

powder

form

powder

form

-

anion traces

chloride (Cl-): ≤50 mg/kg

anion traces

-

anion traces

chloride (Cl-): ≤0.005%, thiosulfate (S2O32-): ≤0.05%passes test

anion traces

-

Quality Level

100

Quality Level

200

Quality Level

300

Quality Level

-

cation traces

Ca: ≤50 mg/kg

cation traces

heavy metals: ≤0.002%

cation traces

As: ≤0.0001%, Fe: ≤0.0005%, heavy metals (as Pb): ≤0.001%

cation traces

-

Other Notes

Reducing agent; To identify the essential tyrosine residue of F1-ATPase from the thermophilic bacterium PS3, that reacts with 7-chloro-4-nitrobenzofurazan; Spectrophotometric determination of the haptoglobin-haemoglobin complex in haemolysed serum; Prolongs the hydrogen photoproduction by Chlorella fusca var. vacuolata 211.11M; Cleaves Ellman′s reagent in surfactant vesicles.

Pictograms

FlameExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Self-heat. 1

Supplementary Hazards

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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