Photographic materials and method of developing the same
Dithioresorcinol is prepared as follows. Benzene is treated with sulphuric acid to produce sodium-1,3-benzene disulphonate. This is reacted with phosphorus pentachloride to produce benzene 1,3-disulphonylchloride which is reacted with zinc dust in water and dilute hydrochloric acid to produce the de...
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| Zusammenfassung: | Dithioresorcinol is prepared as follows. Benzene is treated with sulphuric acid to produce sodium-1,3-benzene disulphonate. This is reacted with phosphorus pentachloride to produce benzene 1,3-disulphonylchloride which is reacted with zinc dust in water and dilute hydrochloric acid to produce the desired compound. U.S.A. Specification 1,970,578 is referred to. |
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