532 SEC. 13. CHEMISTRY. 



of calcium in the molecular proportion of about 1*5. Obtained 

 by saturating milk of lime with chlorine gas. Towards the end 

 of the process the temperature rises, when permanganate of lime 

 is formed owing to the small quantity of manganese contained in 

 the lime, by which the liquor obtains its pink colour. One litre 

 contains from 45-48 grammes of chlorate of lime. 



James Muspratt fy Sons, Lancashire. 



2682. Chlorate of Potash. Finished ground chlorate of 

 potash, containing about 0*022 per cent, chloride of calcium, and 

 about 0' 125 per cent, moisture. 



James Muspratt $ Sons, Lancashire. 



2683. Chlorate of Potash. First crystals of chlorate of 

 potash, containing about 85 per cent, chlorate of potash, and 3-4 

 per cent, chloride of calcium. 



James Muspratt fy Sons, Lancashire. 



2686. Chlorate of Potash. First mother liquor of chlorate 

 of potash, of about 1 * 3 specific gravity. The solution of chlorate 

 of lime is boiled down with a sufficient quantity of muriate of 

 potash, and allowed to cool and crystallize for 8-10 days. 



James Muspratt fy Sons, Lancashire. 



2684. Chlorate of Potash. Finished crystals of chlorate of 

 potash, containing about 0502 per cent, chloride of calcium. 



James Muspratt fy Sons, Lancashire. 



2685. Chlorate of Potash. Last mother liquor of chlorate 

 of potash, of 1 35-1 * 40 specific gravity. The first mother liquor 

 is boiled down still further, and allowed to cool and crystallize 

 again for 8-10 days. It contains 30-40 grammes chlorate of 

 potash, about 520 grammes chloride of calcium, and 3-5 chloride of 

 potassium in the litre. James Muspratt fy Sons, Lancashire. 



2687. Caustic Soda Ash, containing about 12 per cent, 

 caustic soda, 76-80 per cent, carbonate of soda, total strength 

 about 54-56 per cent. Na 2 O. Black ash is lixiviated in iron tanks, 

 the liquor thus obtained is boiled down in open wrought-iron pans, 

 and, as the crystals fall, they are fished out and calcined in an 

 open furnace. James Muspratt fy Sons, Lancashire. 



2688. Nitre Cake, obtained in the manufacture of sulphuric 

 acid by decomposing nitrate of soda with sulphuric acid. It is 

 composed of sulphate of soda, together with small quantities of 

 sulphate of iron, lime, and magnesia, of chloride of sodium, nitrate 

 of soda- undecomposed nitrate of soda, and free sulphuric acid. 



James Muspratt fy Sons, Lancashire. 



2689. Common Salt. From the salt works of Northwich, 

 Cheshire, used in the manufacture of salt cake or sulphate of soda 



Sullivan Sf Co., Widnes, Lancashire. 



