25022

Acétate de sodium trihydrate

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

• 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 : 329752766
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: puriss.; meets analytical specification of Ph. Eur., BP, USP, FCC, E262
• Pureté: 99.0-101.0% (calc. to the dried substance)
• Forme: powder or crystals
• Température d'inflammation spontanée: 1112 °F
• Impuretés: 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)
• Perte: 39.0-40.5% loss on drying, 130 °C
• pH: 7.5-9.0 (20 °C, 5%)
• Traces d'anions: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Traces de cations: 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
• Adéquation: complies 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 their 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