20840

Natriumkacodylat Trihydrat

purum p.a., ≥98.0% (T)

• Synonym(e): Cacodylsäure Natriumsalz Trihydrat, Dimethylarsinsäure Natriumsalz, Dimethylarsonsäure Natriumsalz
• Lineare Formel: (CH₃)₂AsO₂Na · 3H₂O
• CAS-Nummer: 6131-99-3
• Molekulargewicht: 214.03
• Beilstein: 3702348
• EG-Nummer: 204-708-2
• MDL-Nummer: MFCD00149079
• UNSPSC-Code: 12352100
• PubChem Substanz-ID: 57647877
• NACRES: NA.21

Eigenschaften

• Qualität: purum p.a.
• Qualitätsniveau: 200
• Assay: ≥98.0% (T)
• Form: solid
• Anionenspuren: chloride (Cl^-): ≤100 mg/kg; sulfate (SO₄^2-): ≤200 mg/kg
• Kationenspuren: Ca: ≤100 mg/kg; Cd: ≤50 mg/kg; Co: ≤50 mg/kg; Cu: ≤50 mg/kg; Fe: ≤50 mg/kg; K: ≤500 mg/kg; Ni: ≤50 mg/kg; Pb: ≤50 mg/kg; Zn: ≤50 mg/kg
• SMILES String: [Na+].[H]O[H].[H]O[H].[H]O[H].C[As](C)([O-])=O
• InChI: 1S/C2H7AsO2.Na.3H2O/c1-3(2,4)5;;;;/h1-2H3,(H,4,5);;3*1H2/q;+1;;;/p-1
• InChIKey: RLGWPHBPRCROJO-UHFFFAOYSA-M

Beschreibung

Allgemeine Beschreibung

Sodium cacodylate trihydrate is a biological buffer. Its crystals have been analyzed by single-crystal X-ray diffraction studies. Studies suggested its crystals exhibited two phases, viz. penta-μ-aqua-disodium(I) bis(dimethylarsenate), {[Na₂(H₂O)₅](C₂H₆AsO₂)₂}_n and di-μ-aqua-bis[triaquasodium(I)] bis(dimethylarsenate), [Na₂(H₂O)₈](C₂H₆AsO₂)₂.

Anwendung

Sodium cacodylate trihydrate may be employed as buffer to maintain pH 7.4 in electron microscopic studies. It may be used to compose cacodylate buffer for use in electron microscopic studies.

Sicherheitshinweise

• Piktogramme: GHS06,GHS08,GHS09
• Signalwort: Danger
• H-Sätze: H301 + H331,H350,H410
• P-Sätze: P202 - P261 - P264 - P273 - P301 + P310 - P304 + P340 + P311
• Gefahreneinstufungen: Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B
• Lagerklassenschlüssel: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• WGK: WGK 3
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges