72030

Sodium tetrathionate dihydrate

purum p.a., ≥98.0% (T)

• Fórmula lineal: NaO₃SS₂SO₃Na · 2H₂O
• Número de CAS: 13721-29-4
• Peso molecular: 306.27
• MDL number: MFCD00150868
• UNSPSC Code: 12352302
• PubChem Substance ID: 329762997
• NACRES: NA.21
• assay: ≥98.0% (T)
• form: powder or crystals
• solubility: H₂O: 50 mg/mL, slightly turbid, colorless

Propiedades

• grade: purum p.a.
• Quality Level: 200
• assay: ≥98.0% (T)
• form: powder or crystals
• impurities: 10.5-20.0% water (Karl Fischer)
• pH: 4-6 (25 °C, 30.6 g/L)
• solubility: H₂O: 50 mg/mL, slightly turbid, colorless
• density: 2.1 g/mL at 25 °C (lit.)
• anion traces: thiosulfate (S₂O₃^2-): ≤500 mg/kg
• cation traces: Ca: ≤500 mg/kg; Cd: ≤50 mg/kg; Co: ≤50 mg/kg; Cu: ≤50 mg/kg; Fe: ≤50 mg/kg; K: ≤100 mg/kg; Ni: ≤50 mg/kg; Pb: ≤50 mg/kg; Zn: ≤50 mg/kg
• storage temp.: 2-8°C
• SMILES string: O.O.[Na+].[Na+].[O-]S(=O)(=O)SSS([O-])(=O)=O
• InChI: 1S/2Na.H2O6S4.2H2O/c;;1-9(2,3)7-8-10(4,5)6;;/h;;(H,1,2,3)(H,4,5,6);2*1H2/q2*+1;;;/p-2
• InChI key: HAEPBEMBOAIUPN-UHFFFAOYSA-L

Descripción

General description

Sodium tetrathionate dihydrate is the dihydrate of sodium tetrathionate. It has been synthesized from sodium thiosulfate by iodine oxidation. Its crystals exhibit monoclinic crystal system and space group C₂³-C2.

Application

Sodium tetrathionate dihydrate may be used to compose the 0.2M Tris buffer in a study.

Other Notes

Thiosulfating agent; it reacts with thiols, e.g. cysteine to S-sulfo-thiols, used in the quantitative determination of total cysteine/cystine in proteins; Reversible inactivation of enzymes

Información de seguridad

• pictograms: GHS07
• signalword: Warning
• hcodes: H315,H319,H335
• pcodes: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable