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Samarium acetate | |
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Names: | samarium(III) acetate samarium triacetate samarium(III) ethanoate |
Formula: | Sm(CH3COO)3 (anhydrous) Sm(CH3COO)3 · 3H2O (trihydrate) |
Molar mass: | 327.491 g/mol (anhydrous) 381.536 g/mol (trihydrate) |
Density: | 1.94 g/cm3 (trihydrate) |
Crystal system: | tetragonal (trihydrate) α=90°, β=90°, γ=90° |
Shapes: | |
Color: | light yellow |
Stability: | erodes (trihydrate) |
Hardness: | fragile |
Toxicity: | moderately toxic |
Description
Organic compound, salt of trivalent rare earth metal samarium and organic acetic acid. From water solutions crystallizes as trihydrate.
Precursors
Reaction between samarium(III) oxide, hydroxide or carbonate and acetic acid
Chemical equation:
100.00
g of samarium acetate trihydrate
а 63.00
g of carbonate or 52.78
g of hydroxide or 45.70
g of samarium oxide and 67.45
g of 70%
acetic acid is required.Add acid to the flask, then add small parts of samarium compound with stirring until it will totally dissolve or, if you use carbonate, until carbon dioxide emission will stop. After reaction will stop, filter the solution and use it for crystal growing.
Storage conditions
For crystal storing use hermetic vessel with wadding moistened with such solution near the crystal. You can use such alternatives as vessel with vaseline or vegetable oil, organic non-hygroscopic solvent (kerosene or liquid paraffin). Also you can use acrylate polymer or another kinds of solidifying plastic.
Solubility
Temperature | g/100,00 g water | |
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(anhydrous) | (trihydrate) | |
25°C298.15 K <br />77 °F <br />536.67 °R <br /> | ~12.6 | 15 |
Gallery
Sources
Acetates | |
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Salts |
Calcium acetate (Ca(CH3COO)2) • Copper(II) acetate (Cu(CH3COO)2) • Chromium(II) acetate (Cr(CH3COO)2) • Gadolinium acetate (Gd(CH3COO)3) • Dysprosium acetate (Dy(CH3COO)3) • Holmium acetate (Ho(CH3COO)3) • Iron(II) acetate (Fe(CH3COO)2) • Lead(II) acetate (Pb(CH3COO)2) • Manganese(II) acetate (Mn(CH3COO)2) • Neodymium acetate (Nd(CH3COO)3) • Nickel acetate (Ni(CH3COO)2) • Samarium acetate (Sm(CH3COO)3) • Strontium acetate (Sr(CH3COO)2) • Sodium acetate (NaCH3COO) • Zinc acetate (Zn(CH3COO)2) |
Double Salts |
Copper-calcium acetate (CuCa(CH3COO)4) • Uranyl-sodium acetate (NaUО2(CH3COO)3) • Uranyl-zinc-sodium acetate (NaZn(UO2)3(CH3COO)9) |
Samarium compounds | |
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Samarium acetate (Sm(CH3COO)3) |