SODIUM TETRATHIONATE DIHYDRATE

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

Molecular Weight: 306.27. Empirical Formula: Na₂O₆S₄ · 2H₂O. linearFormula: NaO₃SS₂SO₃Na · 2H₂O. 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. Pictograms: GHS07. Signal Word: Warning. Hazard Statements: H315 - H319 - H335. Precautionary Statements: 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 Code: 11 - Combustible Solids. WGK: WGK 3. Flash Point(F): Not applicable. Flash Point(C): Not applicable.