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Merck
CN

32318-M

乙酸钠 三水合物

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

别名:

醋酸 钠盐 三水合物

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关于此项目

线性分子式:
CH3COONa · 3H2O
化学文摘社编号:
6131-90-4
分子量:
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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InChI key

AYRVGWHSXIMRAB-UHFFFAOYSA-M

InChI

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

SMILES string

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

grade

ACS reagent, puriss. p.a.

agency

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

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 (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

Quality Level

100

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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

乙酸激酶的酶底物（酶代码 EC 2.7.2.1）

存储类别

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

法规信息

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分析证书(COA)

Lot/Batch Number
SDBB3475
SDBB4998
STBL1787
STBL0516
STBK8946

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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)

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