32318-M

Natriumacetat Trihydrat

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5%

• Synonym(e): Essigsäure Natriumsalz Trihydrat
• Lineare Formel: CH₃COONa · 3H₂O
• CAS-Nummer: 6131-90-4
• Molekulargewicht: 136.08
• UNSPSC Code: 12352300
• NACRES: NA.21
• PubChem Substance ID: 329754136
• EC Number: 204-823-8
• Beilstein/REAXYS Number: 3732037
• MDL number: MFCD00071557

Eigenschaften

• Quality Segment: 100
• agency: USP/NF, reag. ISO, reag. Ph. Eur.
• grade: ACS reagent, puriss. p.a.
• assay: ≥99.5%
• form: crystalline
• autoignition temp.: 1112 °F
• impurities: ≤0.0005% heavy metals (as Pb), ≤0.005% KMnO₄ red. matter (as HCOOH), ≤0.005% in water soluble matter
• loss: 39.0-40.5% loss on drying, 130 °C
• pH: 7.5-9.0 (20 °C, 5%)
• anion traces: chloride (Cl^-): ≤0.001%, phosphate (PO₄^3-): ≤5 mg/kg, sulfate (SO₄^2-): ≤20 mg/kg
• cation traces: Al: ≤0.2 mg/kg, As: ≤2 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
• suitability: in accordance for appearance of solution
• SMILES string: O.O.O.[Na+].CC([O-])=O
• InChI: 1S/C2H4O2.Na.3H2O/c1-2(3)4;;;;/h1H3,(H,3,4);;3*1H2/q;+1;;;/p-1
• InChI key: AYRVGWHSXIMRAB-UHFFFAOYSA-M

Beschreibung

General description

Sodium acetate trihydrate can be obtained from the crystallization of sodium acetate in water. On heating at 75°C, it melts, while on heating above 120°C it loses water of crystallization and gets converted into anhydrous form. The hyperfine proton and ¹³C splittings have been evaluated by recording ESR spectra of its irradiated single crystals. ESR studies suggested the existence of trapped methyl radicals. Its crystals are monoclinic and its crystal structure has been investigated by photographic methods. Unit cell parameters were evaluated.

Application

Sodium acetate trihydrate may be used in the fabrication of silicone/sodium acetate trihydrate hybrid, a water-responsive shape memory hybrid.

Other Notes

Enzymsubstrat für Acetatkinase (EC 2.7.2.1)

Sicherheitshinweise

• Lagerklasse: 11 - Combustible Solids
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable