disodium sulfinatosulfinate

• ChemBase ID: 129519
• Molecular Formular: Na2O4S2
• Molecular Mass: 174.10714
• Monoisotopic Mass: 173.90333904
• SMILES: [O-]S(=O)S(=O)[O-].[Na+].[Na+]
• Canonical SMILES: [O-]S(=O)S(=O)[O-].[Na+].[Na+]
• InChI: InChI=1S/2Na.H2O4S2/c;;1-5(2)6(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2
• InChIKey: JVBXVOWTABLYPX-UHFFFAOYSA-L

NAMES AND DATABASE IDS

Names

• IUPAC name: disodium sulfinatosulfinate
• IUPAC Traditional name: disodium dithionite
• Synonyms: D-Ox; Hydrolin; Reductone; Sodium hydrosulfite; Sodium sulfoxylate; Sulfoxylate; Vatrolite; Virtex L; Sodium dithionite; Sodium dithionite; Sodium hypodisulfite; Sodium hydrosulfite; Sodium hydrosulfite, tech.; Sodium dithionite; 低亚硫酸钠; 次硫酸氢钠; 连二亚硫酸钠; 连二亚硫酸钠 , tech.; 连二亚硫酸钠; 低亚硫酸钠

Database IDs

• CAS Number: 7775-14-6
• EC Number: 231-890-0
• MDL Number: MFCD00011640
• Merck Index: 148626
• PubChem SID: 24849712; 162223811; 24886252
• PubChem CID: 24489
• CHEBI ID: 66870
• Wikipedia Title: Sodium_dithionite

CALCULATED PROPERTIES

• Acid pKa: 1.69897
• H Acceptors: 4
• H Donor: 0
• LogD (pH = 5.5): -6.079097
• LogD (pH = 7.4): -6.1319666
• Log P: -1.5210184
• Molar Refractivity: 17.2832 cm^3
• Polarizability: 9.018009 Å^3
• Polar Surface Area: 80.26 Å^2
• Rotatable Bonds: 1
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: 18.2 g/10 mL (anhydrous, 20 °C) ; 21.9 g/100 mL (Dihydrate, 20 °C) in water; slightly soluble in alcohol
• Apperance: Powder; white to grayish crystalline powder ; light-lemon colored flakes
• Melting Point: >300 °C (dec.)(lit.); 52°C; 52°C dec.
• Boiling Point: Decomposes
• Flash Point: 100 °C
• Auto Ignition Point: 200 °C
• Density: 2.38 g/cm^3 (anhydrous) ; 1.58 g/cm^3 (dihydrate)
• Odor: faint sulfur odor

Safety Information

• Storage Warning: Moisture Sensitive
• RTECS: JP2100000
• European Hazard Symbols: Oxidising (O); X; Harmful (Xn)
• UN Number: 1384; UN1384
• German water hazard class: 1
• Hazard Class: 4.2
• Packing Group: 2; II
• Risk Statements: 7-22-31; R7, R22, R31
• Safety Statements: 7/8-26-28-43; S2, S7/8, S26, S28, S43
• TSCA Listed: 是
• EU Index: 016-028-00-1
• GHS Pictograms: GHS02; GHS07
• GHS Signal Word: Danger
• NFPA704:
  

  3

  2

  1
• GHS Hazard statements: H251-H302
• GHS Precautionary statements: P235 + P410; P280-P235+P410-P301+P312-P420-P407-P501A
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves; Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
• RID/ADR: UN 1384 4.2/PG 2
• Supplemental Hazard Statements: Contact with acids liberates toxic gas.

Product Information

• Purity: ≥80% (RT); ≥82% (RT); ≥85.0%; ≥86%; 85%; 85+%
• Grade: CP; JIS special grade; technical; technical grade
• 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
• Antion Traces: chloride (Cl-): ≤50 mg/kg
• Quality: purified
• Linear Formula: NaO2SSO2Na

DETAILS

Sigma Aldrich - 71699

Other Notes
Reducing agent1; To identify the essential tyrosine residue of F1-ATPase from the thermophilic bacterium PS3, that reacts with 7-chloro-4-nitrobenzofurazan2; Spectrophotometric determination of the haptoglobin-haemoglobin complex in haemolysed serum3; Prolongs the hydrogen photoproduction by Chlorella fusca var. vacuolata 211.11M4; Cleaves Ellman′s reagent in surfactant vesicles5.

Sigma Aldrich - 71700

Other Notes
Reagent for the reduction of aldehydes and ketones to alcohols1; review2

Sigma Aldrich - 157953

Frequently Asked Questions
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Packaging
100 g in poly bottle
2 kg in poly bottle
5 g in glass bottle

REFERENCES

• Useful reducing agent for a variety of functional groups. Often used in aqueous mixtures in combination with a base such as bicarbonate to prevent decomposition of the reagent by acid.
• Examples of reductions with the reagent:
• Nitroso compounds to amines: Org. Synth. Coll., 2, 33 (1943); 4, 247, (1963). Azo compounds to amines: Org. Synth. Coll., 1, 49 (1941); 2, 35, 39 (1943). Quinones to hydroquinones: Org. Synth. Coll., 4, 16 (1963). Aldehydes and ketones to alcohols: Synthesis, 246 (1977); for a phase-transfer method giving improved yields, see: J. Chem. Soc., Chem. Commun., 1080 (1979). For selective 1,4-reduction of conjugated aldehydes and ketones in the presence of unconjugated, see: Tetrahedron Lett., 36, 1107 (1995). Dehalogenation of ɑ-halo ketones: Synth. Commun., 12, 261 (1982).
• For a review of reductions with dithionite, including nitrogen functions, carbonyl compounds and 1,4-reductions of enones, see: Bull. Soc. Chim. Fr., 565 (1986).
• Also useful in small amounts as a decolorizing agent in the purification of organic compounds; see, e.g.: Org. Synth. Coll., 3, 86, 637 (1955); 4, 45 (1963).