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25022

Sigma-Aldrich

Sodium acetate trihydrate

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

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Synonym(s):
Acetic acid sodium salt trihydrate
Linear Formula:
CH3COONa · 3H2O
CAS Number:
Molecular Weight:
136.08
Beilstein:
3732037
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

puriss.

Quality Level

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

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 (SO42-): ≤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

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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This Item
32318236500SX0255
Sodium acetate trihydrate puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E262, 99.0-101.0% (calc. to the dried substance), ≤0.00002% Al

Sigma-Aldrich

25022

Sodium acetate trihydrate

Essential Grade
Sodium acetate trihydrate puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5%

Sigma-Aldrich

32318

Sodium acetate trihydrate

Essential Grade
Sodium acetate trihydrate Meets ACS Specifications GR ACS

Supelco

SX0255

Sodium acetate trihydrate

-
assay

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

assay

≥99.5%

assay

≥99%

assay

99.0-101.0% (perchloric acid titration)

form

powder or crystals

form

crystalline

form

crystals or chunks

form

solid

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)

impurities

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

impurities

MnO4- reducers, passes test, ≤0.005% insolubles

impurities

≤0.005% Insoluble matter

pH

7.5-9.0 (20 °C, 5%)

pH

7.5-9.0 (20 °C, 5%)

pH

7.5-9.2 (25 °C, 5%)

pH

7.5-9.2 (20 °C, 50 g/L in H2O)

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg

anion traces

chloride (Cl-): ≤0.001%, phosphate (PO43-): ≤5 mg/kg, sulfate (SO42-): ≤20 mg/kg

anion traces

chloride (Cl-): ≤0.001%, phosphate (PO43-): ≤5 ppm, sulfate (SO42-): ≤0.002%

anion traces

chloride (Cl-): ≤0.0005%, phosphate (PO43-): ≤0.0002%, sulfate (SO42-): ≤0.002%

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.

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)

Storage Class Code

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)
Eagleson M.
Concise Encyclopedia Chemistry, 995-995 (1994)
Claire E Mason et al.
Journal of the American Society for Mass Spectrometry, 24(2), 274-285 (2013-01-04)
Single-stranded DNA-binding proteins (SSBs) are ubiquitous oligomeric proteins that bind with very high affinity to single-stranded DNA and have a variety of essential roles in DNA metabolism. Nanoelectrospray ionization mass spectrometry (nanoESI-MS) was used to monitor subunit exchange in full-length

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