Samarium. 35 



Sp. Grav: 



1.1551 gram, temp. 20" sp. Gr. 3.737 



0.6168 )) » » » » 3.730 



0.7878 » » » » )) 3.732 



Mean: 3.733. 



Molecular volume: 76.35. 



Acetate of samarium 



This salt crystallises at ordinary temperature on spontaneous eva- 

 poration in short prisms or tabular crystals which are moderately soluble 

 in water. On evaporating the concentrated solution on the water-bath 

 needle-shaped crystals, containing less water, are obtained, but the exact 

 quantity of the water of crystallisation in the salt could not be determi- 

 ned, as the salt very rapidly takes up water from the mother-liquor. 



The salt crystallised at the ordinary temperature gave on analysis: 



0.7886 gram lost at 110" 0.1393 gram HgO and gave by ignition 

 0.3444 gram SmgOg. 



0.8688 gram lost 0.1546 gram H2O and gave 0.3802 gram SniäOs. 

 In percent: 



Calc 



Sm^Oa 43.67 43.76 174 43.61 



NC.H^Og — — 153 — 



H^O 17.66 17.79 ■ 72 18.05 



399 

 Spec. Grav: 



Crystallised salt: 



1.1916 gram, small crystals, temp. 15''.5 sp. Gr. 1.938 

 1.1536 » » » » 14".5 » » 1.942 



Mean of both determinations: 1.940. 

 Molecular volume: 205.7. 



Anhydrous salt: 



1.1475 gr. temp. 18''.3 ep. Gr. 2.208. 

 Molecular volume: 148.1. 



