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Sodium acetate trihydrate

Name: Sodium acetate trihydrate
Brand: SIAL

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

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:

329754136

EC Number:

204-823-8

Beilstein/REAXYS Number:

3732037

MDL number:

MFCD00071557

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Properties

Quality Level

100

agency

USP/NF, reag. ISO, reag. Ph. Eur.

grade

ACS reagent, puriss. p.a.

assay

≥99.5%

form

crystalline

autoignition temp.

1112 °F

impurities

≤0.0005% heavy metals (as Pb), ≤0.005% KMnO₄ red. matter (as HCOOH), ≤0.005% in water soluble matter

loss

39.0-40.5% loss on drying, 130 °C

pH

7.5-9.0 (20 °C, 5%)

anion traces

chloride (Cl^-): ≤0.001%, phosphate (PO₄^3-): ≤5 mg/kg, sulfate (SO₄^2-): ≤20 mg/kg

cation traces

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

suitability

in accordance 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

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 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.

Other Notes

Enzyme substrate for acetate kinase (EC 2.7.2.1)

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1 of 1

This Item	236500	935700	1.04162
Sigma-Aldrich 32318-M Sodium acetate trihydrate	Sigma-Aldrich 236500 Sodium acetate trihydrate	Sigma-Aldrich 935700 Sodium acetate trihydrate	SAFC 1.04162 Sodium acetate trihydrate
grade ACS reagent, puriss. p.a.	grade ACS reagent	grade -	grade -
assay ≥99.5%	assay ≥99%	assay ≥99.9% trace metals basis	assay -
Quality Level 100	Quality Level 200	Quality Level 200	Quality Level 500
form crystalline	form crystals or chunks	form powder or crystals (or granules)	form granular
pH 7.5-9.0 (20 °C, 5%)	pH 7.5-9.2 (25 °C, 5%)	pH -	pH -
cation traces Al: ≤0.2 mg/kg, Ca: ≤10 mg/kg, Cu: ≤5 mg/kg, K: ≤50 mg/kg, Pb: ≤5 mg/kg, As: ≤2 mg/kg, Fe: ≤5 mg/kg, Zn: ≤5 mg/kg, Cd: ≤5 mg/kg, Mg: ≤5 mg/kg	cation traces Ca: ≤0.005%, Fe: ≤5 ppm, K: ≤0.005%, Mg: ≤0.002%, heavy metals (as Pb): ≤5 ppm	cation traces -	cation traces -

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Water-responsive shape memory hybrid: Design concept and demonstration.

Fan K, et al.

Express Polymer Letters, 5(5), 409-416 (2011)

Methyl radical in irradiated single crystals of sodium acetate trihydrate.

Rogers MT and Kispert LD.

J. Chem. Phys. , 46(1), 221-223 (1967)

The crystal structure of sodium acetate trihydrate.

Cameron TS, et al.

Acta Crystallographica Section B, Structural Science, 32(1), 87-90 (1976)

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