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71190

Sigma-Aldrich

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:
6131-90-4
Molecular Weight:
136.08
Beilstein:
3732037
EC Number:
204-823-8
MDL number:
MFCD00071557
UNSPSC Code:
12352300

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

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

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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 Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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)
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)
Eagleson M.
Concise Encyclopedia Chemistry, 995-995 (1994)
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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