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: 3732037
• Número CE: 204-823-8
• Número MDL: MFCD00071557
• Código UNSPSC: 12352300
• ID de la sustancia en PubChem: 329752766
• NACRES: NA.21

Propiedades

• grado: puriss.
• Nivel de calidad: 200
• Ensayo: 99.0-101.0% (calc. to the dried substance)
• Formulario: powder or crystals
• temp. de autoignición: 1112 °F
• calidad: meets analytical specification of Ph. Eur., BP, USP, FCC, E262
• impurezas: 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)
• pérdida: 39.0-40.5% loss on drying, 130 °C
• pH: 7.5-9.0 (20 °C, 5%)
• trazas de anión: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• trazas de catión: 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
• idoneidad: complies for appearance of solution
• cadena SMILES: 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
• Clave InChI: AYRVGWHSXIMRAB-UHFFFAOYSA-M

Descripción

Descripción general

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]

Aplicación

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

Otras notas

Sustrato enzimático para la acetato cinasa (EC 2.7.2.1)

Información de seguridad

• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable