32318

Acétate de sodium trihydrate

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

• Synonyme(s) : Acide acétique sodium salt trihydrate
• Formule linéaire : CH₃COONa · 3H₂O
• Numéro CAS: 6131-90-4
• Poids moléculaire : 136.08
• Numéro Beilstein : 3732037
• Numéro CE : 204-823-8
• Numéro MDL: MFCD00071557
• Code UNSPSC : 12352300
• ID de substance PubChem : 329754136
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: ACS reagent; puriss. p.a.
• Agence: USP/NF; reag. ISO; reag. Ph. Eur.
• Pureté: ≥99.5%
• Forme: crystalline
• Température d'inflammation spontanée: 1112 °F
• Impuretés: ≤0.0005% heavy metals (as Pb); ≤0.005% KMnO₄ red. matter (as HCOOH); ≤0.005% in water soluble matter
• Perte: 39.0-40.5% loss on drying, 130 °C
• pH: 7.5-9.0 (20 °C, 5%)
• Traces d'anions: chloride (Cl^-): ≤0.001%; phosphate (PO₄^3-): ≤5 mg/kg; sulfate (SO₄^2-): ≤20 mg/kg
• Traces de cations: 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
• Adéquation: in accordance for appearance of solution
• Chaîne 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
• Clé InChI: AYRVGWHSXIMRAB-UHFFFAOYSA-M

Description

Description générale

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.

Autres remarques

Substrat de l′acétate kinase (EC 2.7.2.1)

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable