?)i HYPONITRITES ; PROPERTIES AND PREPARATION BY 



2. Eeductiou of an alkali nitrite by ferrous hydroxide 

 (Zorn, 1882 ; Dunstan and Dymond). 



3. Keduction of (hypo-nitrososulpliates by sodium amal- 

 gam (Divers and Haga, 1885). 



4. Keduction of nitric oxide by alkali stannite (Divers 

 and Haga, 1885). 



5. Keduction of nitric oxide by ferrous hydroxide 

 (Dunstan and Dymond, 1887). 



6. Decomposition of an oxyamidosulphonate by alkali 

 (Divers and Haga, 1889). 



7. Oxidation of hydroxylamine by sodium hypobromite 

 (Kolotow, 1890). 



8. Oxidation of hydroxylamine by mercuric oxide, sil- 

 ver oxide, or cupric hydroxide (Thum, 189o). 



9. Interaction of hydroxylamine and nitrous acid (Thum, 

 H. Wislicenus, Paal and Kretschmer, Tanatar, 1893). 



10. Oxidation of hydroxylamine by benzenesulphonic 

 chloride and alkali (Piloty, 1896). 



11. Interaction, in methyl alcohol, of hydroxylamine 

 and nitrous gases (Kaufmann, 1898, Ann., 299, 98). 



12. Interaction, in methyl alcohol, of hydroxycarbamide 

 and nitrous gases (Hantzsch, 1898). 



13. Interaction of dimethylhydroxynitrosocarl)amide and 

 alkali (Hantzsch and Saner, 1898). 



Menke's reduction of fused alkali nitrate by iron and Kay's 

 reduction of mercuric nitrite by potassium cyanide in solution 

 are not included in the list, because both reductions are very 

 doubtful and in need of confirmation before they can be 

 accepted as facts. In the present paper only the original method 

 of preparing hyponitrites will be treated of. 



