38 



retted hydrogen is obtained, while the chlorides give two atoms of 

 hydrochloric acid, 



Similar reactions are observed with organic compounds belonging 

 to the series of water with the formation of phosphorous and phos- 

 phoric acids respectively, or a copulated acid. By acting in this 

 way, the following series of sulphuretted organic compounds is ob- 

 tained, by the side of which are placed for comparison the products 

 formed by the action of the chlorides of phosphorus on the same 

 substances. 



Sulphuretted Hydrogen. 

 H 



Mercaptan. 



CTT 

 2^5 



H 



Sulphide of Ethyl. 



C^ H 5 J 



Othyl-Hydrosulphuric Acid. 

 C,H,O 



Hydrochloric Acid. 

 2HC1. 



Chloride of Ethyl-f- Hydrochloric Acid. 



Othyl-Sulphide of Othyl. 



Chloride of Ethyl. 

 2C H Cl. 



Chloride of Othyl+Hydrochloric Acid. 

 C 2 H 3 O,C1 + HC1. 



Chloride of Othyl. 

 2C 2 H 3 O, Cl. 



Chloride of Othyl+Chloride of Ethyl. 



Othyl-Sulphide of Ethyl. 



5ls. 



Mercaptan is obtained by the action of tersulphide or pentasulphide 

 of phosphorus on alcohol with extreme facility. Sulphide of ethyl 

 may also be prepared by acting on ether in a similar manner. 



Thiacetic Acid, Sulphuretted Acetic Acid, has been obtained by 

 me by acting on monohydrated acetic acid with tersulphide of 

 phosphorus. It is a colourless liquid, boiling at about 93 C., and 

 has a peculiar odour resembling sulphuretted hydrogen and acetic 



