The following table, prepared by E. Finot and Arm. Bertrand for the
_Jour. de Ph. et de Chim._, shows the point at which the evaporation of
certain solutions is to be interrupted in order to procure a good crop
of crystals on cooling. The density is according to Baumé's scale, the
solution warm:
Aluminum sulphate 25 | Nickel acetate 30
Alum (amm. or pot.) 20 | " ammon. sulphate 18
Ammonium acetate 14 | " chloride 50
" arsenate 5 | " sulphate 40
" benzoate 5 | Oxalic acid 12
" bichromate 28 | Potass. and sod. tartrate 36
" bromide 30 | Potassium arsenate 36
" chloride 12 | " benzoate 2
" nitrate 29 | " bisulphate 35
" oxalate 5 | " bromide 40
" phosphate 35 | " chlorate 22
" sulphate 28 | " chloride 25
" sulphocyanide 18 | " chromate 38
" tartrate 25 | " citrate 36
Barium ethylsulphate 43 | " ferrocyanide 38
" formate 32 | " iodide 17
" hyposulphite 24 | " nitrate 28
" nitrate 18 | " oxalate 30
" oxide 12 | " permanganate 25
Bismuth nitrate 70 | " sulphate 15
Boric acid 6 | " sulphite 25
Cadmium bromide 65 | " sulphocyanide 35
Calcium chloride 40 | " tartrate 48
" ethylsulphate 36 | Soda 28
" lactate 8 | Sodium acetate 22
" nitrate 55 | " ammon. phosp. 17
Cobalt chloride 41 | " arsenate 36
" nitrate 50 | " borate 24
" sulphate 40 | " bromide 55
Copper acetate 5 | " chlorate 43
" ammon. sulph. 35 | " chromate 45
" chloride 45 | " citrate 36
" nitrate 55 | " ethylsulphate 37
" sulphate 30 | " hyposulphite 24
Iron-ammon. oxalate 30 | " nitrate 40
" ammon. sulphate 31 | " phosphate 20
" sulphate 31 | " pyrophosphate 18
" tartrate 40 | " sulphate 30
Lead acetate 42 | " tungstate 45
" nitrate 50 | Stroutium bromide 50
Magnesium chloride 35 | " chlorate 65
" lactate 6 | " chloride 34
" nitrate 45 | Tin choride (stannous) 75
" sulphate 40 |
Manganese chloride 47 | Zinc acetate 20
" lactate 8 | " ammon. chloride 43
" sulphate 44 | " nitrate 55
Mercury cyanide 20 | " sulphate 45
* * * * *