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32318 Sigma-Aldrich

Sodium acetate trihydrate

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

Synonym: Acetic acid sodium salt trihydrate

  • CAS Number 6131-90-4

  • Linear Formula CH3COONa · 3H2O

  • Molecular Weight 136.08

  •  Beilstein Registry Number 3732037

  •  EC Number 204-823-8

  •  MDL number MFCD00071557

  •  PubChem Substance ID 329754136

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, Essential Chemicals, Puriss p.a. ACS,
grade   ACS reagent, reag. ISO, reag. Ph. Eur.
InChI Key   AYRVGWHSXIMRAB-UHFFFAOYSA-M
grade   puriss. p.a.
assay   ≥99.5%
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 (PO43-): ≤5 mg/kg
  sulfate (SO42-): ≤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

Description

Other Notes

Enzyme substrate for acetate kinase (EC 2.7.2.1)

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 its crystal structure has been investigated by photographic methods. Unit cell parameters were evaluated.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
AJ4580000
Protocols & Articles
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