25022

Sodium acetate trihydrate

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

• Szinonimák: Acetic acid sodium salt trihydrate
• Lineáris képlet: CH₃COONa · 3H₂O
• CAS-szám: 6131-90-4
• Molekulatömeg: 136.08
• Beilstein: 3732037
• EC-szám: 204-823-8
• MDL-szám: MFCD00071557
• UNSPSC kód: 12352300
• PubChem Substance ID: 329752766
• NACRES: NA.21

Tulajdonságok

• grade: puriss.
• Minőségi szint: 200
• Teszt: 99.0-101.0% (calc. to the dried substance)
• Forma: powder or crystals
• öngyulladási hőmérséklet: 1112 °F
• minőség: meets analytical specification of Ph. Eur., BP, USP, FCC, E262
• szennyeződések: 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)
• veszteség: 39.0-40.5% loss on drying, 130 °C
• pH: 7.5-9.0 (20 °C, 5%)
• anion nyomok: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• kation nyomok: 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
• alkalmasság: 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
• Nemzetközi kémiai azonosító kulcs: AYRVGWHSXIMRAB-UHFFFAOYSA-M

Leírás

Általános leírás

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.

Alkalmazás

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

Egyéb megjegyzések

Enzyme substrate for acetate kinase (EC 2.7.2.1)

Biztonsági adatok

• Tárolási osztály kódja: 11 - Combustible Solids
• WGK: WGK 1
• Lobbanási pont (F): Not applicable
• Lobbanási pont (C): Not applicable