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Sodium acetate trihydrate

Name: Sodium acetate trihydrate
Brand: SIGALD

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

Sustainability features

Synonym(s):

Acetic acid sodium salt trihydrate

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About This Item

Linear Formula:

CH₃COONa · 3H₂O

CAS Number:

6131-90-4

Molecular Weight:

136.08

UNSPSC Code:

12352300

NACRES:

NA.21

PubChem Substance ID:

329752766

EC Number:

204-823-8

Beilstein/REAXYS Number:

3732037

MDL number:

MFCD00071557

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Properties

grade

puriss.

Quality Segment

200

assay

99.0-101.0% (calc. to the dried substance)

form

powder or crystals

autoignition temp.

1112 °F

quality

meets analytical specification of Ph. Eur., BP, USP, FCC, E262

sustainability

Sustainability features

impurities

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)

loss

39.0-40.5% loss on drying, 130 °C

pH

7.5-9.0 (20 °C, 5%)

anion traces

chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg

cation traces

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

suitability

complies for appearance of solution

SMILES string

O.O.O.[Na+].CC([O-])=O

greener alternative category

InChI

1S/C2H4O2.Na.3H2O/c1-2(3)4;;;;/h1H3,(H,3,4);;3*1H2/q;+1;;;/p-1

InChI key

AYRVGWHSXIMRAB-UHFFFAOYSA-M

Description

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.

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Application

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

Other Notes

Enzyme substrate for acetate kinase (EC 2.7.2.1)

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Storage Class

11 - Combustible Solids

Flash Point (°F)

Not applicable

Flash Point (°C)