Sodium tetrathionate dihydrate

• Catalog No.: 72030
• CAS Number: 13721-29-4
• M. F.: H4Na2O8S4
• M. W.: 306.2665
• Purity: ≥98.0% (T)

SYNONYMS

• Title: 连四硫酸钠 二水合物
• IUPAC name: disodium dihydrate (sulfonatodisulfanyl)sulfonate
• IUPAC Traditional name: disodium dihydrate tetrathionate

DATABASE IDS

• MDL Number: MFCD00150868
• CAS Number: 13721-29-4
• PubChem SID: 24886348

PROPERTIES

• Antion Traces: thiosulfate (S2O32-): ≤500 mg/kg
• Cation Traces: Ca: ≤500 mg/kg
• Cation Traces: Cd: ≤50 mg/kg
• Cation Traces: Co: ≤50 mg/kg
• Cation Traces: Cu: ≤50 mg/kg
• Cation Traces: Fe: ≤50 mg/kg
• Cation Traces: K: ≤100 mg/kg
• Cation Traces: Ni: ≤50 mg/kg
• Cation Traces: Pb: ≤50 mg/kg
• Cation Traces: Zn: ≤50 mg/kg
• Grade: purum p.a.
• Impurities: 10.5-20.0% water (Karl Fischer)
• Linear Formula: NaO3SS2SO3Na · 2H2O
• Purity: ≥98.0% (T)
• Density: 2.1 g/mL at 25 °C(lit.)
• Solubility: H2O: soluble50 mg/mL, slightly turbid, colorless
• GHS Signal Word: Warning
• GHS Hazard statements: H315-H319-H335
• European Hazard Symbols: Irritant (Xi)
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves
• GHS Precautionary statements: P261-P305 + P351 + P338
• Risk Statements: 36/37/38
• RTECS: XF6470000
• Safety Statements: 26-36
• Storage Temperature: 2-8°C
• German water hazard class: 3

DETAILS

Description (English)

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 proteins1; Reversible inactivation of enzymes2

Description (简体中文)

Other Notes
硫代硫酸化试剂；与硫醇（如半胱氨酸）反应形成 S-磺基-硫醇，用于定量测定蛋白质中总的半胱氨酸/胱氨酸1；酶的可逆失活2