25022

Acetato di sodio

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

• Sinonimo/i: Acido acetico
• Formula condensata: CH₃COONa · 3H₂O
• Numero CAS: 6131-90-4
• Peso molecolare: 136.08
• Beilstein: 3732037
• Numero CE: 204-823-8
• Numero MDL: MFCD00071557
• Codice UNSPSC: 12352300
• ID PubChem: 329752766
• NACRES: NA.21

Proprietà

• Grado: puriss.
• Livello qualitativo: 200
• Saggio: 99.0-101.0% (calc. to the dried substance)
• Stato: powder or crystals
• Temp. autoaccensione: 1112 °F
• Qualità: meets analytical specification of Ph. Eur., BP, USP, FCC, E262
• Impurezze: 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)
• Perdita: 39.0-40.5% loss on drying, 130 °C
• pH: 7.5-9.0 (20 °C, 5%)
• Anioni in tracce: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Cationi in tracce: 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
• Compatibilità: complies for appearance of solution
• Stringa SMILE: 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; AYRVGWHSXIMRAB-UHFFFAOYSA-M

Descrizione

Descrizione generale

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 their structure has been investigated by photographic methods. Unit cell parameters were evaluated.

Applicazioni

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

Altre note

Substrato dell′enzima per l′acetato chinasi (EC 2.7.2.1)

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable