72030

Natriumtetrathionat Dihydrat

purum p.a., ≥98.0% (T)

• Lineare Formel: NaO₃SS₂SO₃Na · 2H₂O
• CAS-Nummer: 13721-29-4
• Molekulargewicht: 306.27
• MDL-Nummer: MFCD00150868
• UNSPSC-Code: 12352302
• PubChem Substanz-ID: 329762997
• NACRES: NA.21

Eigenschaften

• Qualität: purum p.a.
• Qualitätsniveau: 200
• Assay: ≥98.0% (T)
• Form: powder or crystals
• Verunreinigungen: 10.5-20.0% water (Karl Fischer)
• pH-Wert: 4-6 (25 °C, 30.6 g/L)
• Löslichkeit: H₂O: 50 mg/mL, slightly turbid, colorless
• Dichte: 2.1 g/mL at 25 °C (lit.)
• Anionenspuren: thiosulfate (S₂O₃^2-): ≤500 mg/kg
• Kationenspuren: 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
• Lagertemp.: 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
• InChIKey: HAEPBEMBOAIUPN-UHFFFAOYSA-L

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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

Sonstige Hinweise

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

Sicherheitshinweise

• Piktogramme: GHS07
• Signalwort: Warning
• H-Sätze: H315,H319,H335
• P-Sätze: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Gefahreneinstufungen: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Zielorgane: Respiratory system
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable