25022

Acetato de sodio trihydrate

puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E262, 99.0-101.0% (calc. to the dried substance), ≤0.00002% Al

• Sinónimos: Ácido acético sodium salt trihydrate
• Fórmula lineal: CH₃COONa · 3H₂O
• Número de CAS: 6131-90-4
• Peso molecular: 136.08
• Beilstein/REAXYS Number: 3732037
• EC Number: 204-823-8
• MDL number: MFCD00071557
• UNSPSC Code: 12352300
• PubChem Substance ID: 329752766
• NACRES: NA.21

Propiedades

• grade: puriss.
• Quality Level: 200
• assay: 99.0-101.0% (calc. to the dried substance)
• form: powder or crystals
• autoignition temp.: 1112 °F
• quality: meets analytical specification of Ph. Eur., BP, USP, FCC, E262
• impurities: organic volatile impurities, complies (GC); reducing matter, complies; residual solvents, in accordance; ≤0.00002% Al; ≤0.001% heavy metals (as Pb); ≤0.002% KMnO₄ red. matter (as O); ≤0.1% KMnO₄ red. matter (as HCOOH)
• loss: 39.0-40.5% loss on drying, 130 °C
• pH: 7.5-9.0 (20 °C, 5%)
• anion traces: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: Al: ≤0.2 mg/kg; As: ≤2 mg/kg; Ca: ≤20 mg/kg; Cu: ≤10 mg/kg; Fe: ≤10 mg/kg; Hg: ≤1 mg/kg; K: ≤200 mg/kg; Mg: ≤20 mg/kg; Pb: ≤2 mg/kg; Zn: ≤10 mg/kg
• suitability: complies 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

Descripción

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.[1] 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.[2] Its crystals are monoclinic and their structure has been investigated by photographic methods. Unit cell parameters were evaluated.[3]

Application

Sodium acetate trihydrate may be used in the fabrication of silicone/sodium acetate trihydrate hybrid, a water-responsive shape memory hybrid.[4]

Other Notes

Sustrato enzimático para la acetato cinasa (EC 2.7.2.1)

Información de seguridad

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable