DEVELOPERS AND THEORY OF DEVELOPMENT 329 



Table I. — Organic Compounds Suggested for Photographic Development 



Compound 



Discoverer 



Date 



Polyphenols 



Pyrogallol 



Hydroquinone 



Pyrocatechol 



Chlorohydroquinone 



Bromohydroquinone 



2:3-Dichlorohydroquinone 



2:3-Dibromohydroquinone 



Toluhydroquinone 



Ethyl gallate 



1 :4-Dihydroxy-2-acetophenone 



1 :2:3-Trihydroxy-4-acetophenone 



I:2:6-Trihydroxy-4-benzophenone 



2:3:4-Trihydroxy-acetophenone 



1 :2 :6-Trihydroxyphenyl-4-phenyl-ketone 



Pyrogallol-dimethylaniline 



Pyrogallol-piperazine 



Pyrogallol-quinoline 



Pyrooatechol-dimethylamine 



Hydroquinone-triacetoamine 



Pyrogallol-methylether-monoglycollic acid. . . . 

 Pyrogallol-dimethylether-monoglycollic acid. . 



Pyrogallol-l-monomethylether 



Pyrogallol-l-monoethylether 



Monethyl-pyrogallol 



Diethyl-pyrogallol 



Mono-tertiary butyl-pyrogallol 



2 :5-Dimethyl-hydroquinone 



2:o-Diethyl-hydroquinone 



2:5-Diphenoxy-hydroquinone 



2:5-Di-p-phenethyl-hydroquinone 



2:5-Dibenzoylainino-hydroquinone 



1 :3-Dimethoxy-2-phenol 



2:4:6-Triniethyl-l:3:5-Trihydroxybenzene. . . . 



2:5-Diphenyl-3:6-dibenzyl-hydroquinone 



2:5-Diacetamino-hydroquinone 



von Regnault & S. Archer 



W. Abney (Eder, Aus. Hndbh., 1903, 



322) 

 Eder & Toth, Phot. Korr., 1880, 191 

 Hauff, Phot. Korr., 1897, 396 

 Schering, D.R.P. 117,798 

 Sobering, D.R.P. 117,798 

 Schering, D.R.P. 117,798 



Lumi^re & Seyewetz, B.J. Phot., 1897, 



665 

 Lumiere & Seyewetz, B.J. Phot., 1897, 



665 

 Lumiere & Seyewetz, B.J. Phot., 1897, 



665 

 LumiSre & Seyewetz, B.J. Phot., 1897, 



665 

 Lumiere & Seyewetz, B.J. Phot., 1897, 



665 

 Lumiere & Seyewetz, B.J. Phot., 1897, 



665 

 Bayer, B.P. 10,721 

 Bayer, B.P. 10,721 

 Bayer, B.P. 10,721 

 Bayer, B.P. 10,721 

 Bayer, B.P. 10,721 

 A.G.F.A., D.R.P. 155,568 

 A.G.F.A., D.R.P. 155,568 

 Schultes, U.S. P. 2,017,295 

 Schultes, U.S.P. 2,017,295 

 Stockelbach, U.S.P. 2,037,742 

 Stockelbach, U.S.P. 2,037,742 

 Stockelbach, U.S.P. 2,037,742 

 K. & L. Schinzel, Das Lichtbild, Aus. 



12/XI, 1936, 173 

 K. & L. Schinzel, Das Lichtbild, Aus. 



12/XI, 1936, 173 

 K. & L. Schinzel, Das Lichtbild, Aus. 



12/XI, 1936, 173 

 K. & L. Schinzel, Das Lichtbild, Aus. 



12/XI, 1936, 173 

 'K. & L. Schinzel, Das Lichtbild, Aus. 



12/XI, 1936, 173 

 K. & L. Schinzel, Das Lichtbild, Aus. 



12/XI, 1936, 173 

 K. & L. Schinzel, Das Lichtbild, Aus. 



12/XI, 1936, 173 

 Kodak-Schinzel, B.P. 498,869 

 Kodak-Schinzel, B.P. 498,869 



1851 



1880 

 1880 

 1897 

 1897 

 1897 

 1897 



1897 



1897 



1897 



1897 



1897 



1897 

 1901 

 1901 

 1901 

 1901 

 1901 

 1903 

 1903 

 1933 

 1933 

 1934 

 1934 

 1934 



1936 



1936 



1936 



1936 



1936 



1936 



1936 

 1939 

 1939 



Aminophenols 



4-Aminophenol 



5-Amino-2-hydroxy toluene 

 2 :4-Diaminophenol 



Andresen, Farben-Industrie, 1888, 187 1888 

 Andresen, B.P. 1,736 1891 



Andresen, D.R.P. 60,174 1891 



