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Merck
CN

71190

Sodium acetate trihydrate

puriss. p.a., ACS reagent, ≥99.0% (NT)

Synonym(s):

Acetic acid sodium salt trihydrate

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About This Item

Linear Formula:
CH3COONa · 3H2O
CAS Number:
Molecular Weight:
136.08
EC Number:
204-823-8
UNSPSC Code:
12352300
MDL number:
Beilstein/REAXYS Number:
3732037
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InChI

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

InChI key

AYRVGWHSXIMRAB-UHFFFAOYSA-M

SMILES string

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

grade

ACS reagent, puriss. p.a.

assay

≥99.0% (NT)

autoignition temp.

1112 °F

impurities

≤0.005% KMnO4-reducing matter (as HCOOH)

pH

7.5-9.2 (25 °C, 50 mg/mL in H2O)

anion traces

chloride (Cl-): ≤5 mg/kg, phosphate (PO43-): ≤5 mg/kg, sulfate (SO42-): ≤20 mg/kg

cation traces

Al: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

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General description

Sodium acetate trihydrate can be obtained from the crystallization of sodium acetate in water. It loses water of crystallization on heating at 75°C, while on heating above 120°C, anhydrous sodium acetate is obtained. Its aqueous solutions are basic in nature. ESR spectra of its irradiated single crystals have been studied at 77°K. The hyperfine proton and 13C splittings indicated the presence of trapped methyl radicals. Its crystal structure has been examined.

Other Notes

Enzyme substrate for acetate kinase (EC 2.7.2.1)

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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Growing crystals from protein.
Blattmann B and Sticher P.
Science in School. The European Journal for Science Teachers, 11, 30-36 (2009)
Methyl radical in irradiated single crystals of sodium acetate trihydrate.
Rogers MT and Kispert LD.
J. Chem. Phys. , 46(1), 221-223 (1967)
Water-responsive shape memory hybrid: Design concept and demonstration.
Fan K, et al.
Express Polymer Letters, 5(5), 409-416 (2011)
The crystal structure of sodium acetate trihydrate.
Cameron TS, et al.
Acta Crystallographica Section B, Structural Science, 32(1), 87-90 (1976)
Eagleson M.
Concise Encyclopedia Chemistry, 995-995 (1994)

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