Name: 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
Brand: SIGMA-ALDRICH
SKU: 25022-1KG-R
Price: 58.10 EUR
Availability: InStock

Application

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

General description

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.

Other Notes

Enzyme substrate for acetate kinase (EC 2.7.2.1)

anion traces	sulfate (SO₄^2-): ≤50 mg/kg, chloride (Cl^-): ≤50 mg/kg
assay	99.0-101.0% (calc. to the dried substance)
autoignition temp.	1112 °F
cation traces	K: ≤200 mg/kg, Cu: ≤10 mg/kg, Ca: ≤20 mg/kg, Pb: ≤2 mg/kg, Fe: ≤10 mg/kg, Zn: ≤10 mg/kg, Mg: ≤20 mg/kg, Al: ≤0.2 mg/kg, Hg: ≤1 mg/kg, As: ≤2 mg/kg
form	powder or crystals
grade	puriss.
impurities	≤0.00002% Al, residual solvents, in accordance, ≤0.001% heavy metals (as Pb), reducing matter, complies, organic volatile impurities, complies (GC), ≤0.1% KMnO₄ red. matter (as HCOOH), ≤0.002% KMnO₄ red. matter (as O)
InChI key	AYRVGWHSXIMRAB-UHFFFAOYSA-M
InChI	1S/C2H4O2.Na.3H2O/c1-2(3)4;;;;/h1H3,(H,3,4);;3*1H2/q;+1;;;/p-1
loss	39.0-40.5% loss on drying, 130 °C
pH	7.5-9.0 (20 °C, 5%)
Quality Level	200
quality	meets analytical specification of Ph. Eur., BP, USP, FCC, E262
SMILES string	O.O.O.[Na+].CC([O-])=O
suitability	complies for appearance of solution

Safety Data Sheet for 25022-1KG-R

Cas Number

6131-90-4

This product has met the following criteria to qualify for the following awards:

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

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