~~~~~~~~ Excerpt from the Guide to Platinum-Palladium Photographic Printmaking by Jeffrey D. Mathias ~~~~~~~~
No part of this document may be reproduced in whole or in part without the express written permission of the Author.
updated July 1999

Formulae

Name Formula Description Molar Mass
or
Formula Weight
       
Ammonium Citrate (NH4)2HC6H5O7 Developer  
Ammonium Dichromate (NH4)2Cr2O7 Contrast Agent  
Ammonium Ferric Oxalate (NH4)3Fe(C2O4)3.3H2O Sensitizer 428.06
Citric Acid HOC(COOH)(CH2COOH)2H2O Clearing Agent  
EDTA (HOCOCH2)2NCH2CH2N(CH2COOH)2 Clearing Agent  
Ferric Oxalate Fe2(C2O4)3.6H2O Sensitizer 483.84
Ferrous Oxalate Fe(C2O4) Exposed Sensitizer  
Hydrochloric Acid HCl Clearing Agent  
Hydrogen Peroxide H2O2 Contrast Agent  
Lithium Chloride LiCl Salt 42.39
Oxalic Acid HOCOCOOH.2H2O Sensitizer Additive  
Palladium Pd Nobel Metal  
Palladium (II) chloride PdCl2 Metal Salt 17.31
Platinum Pt Nobel Metal  
Phosphoric Acid H3PO4 Clearing Agent  
Potassium Chloride KCl Salt 74.55
Potassium Chlorate KClO3 Contrast Agent  
Potassium Oxalate KOCOCOOK.H2O Developer  
Potassium Dichromate K2Cr2O7 Contrast Agent  
Potassium meta-Bisulfite K2S2O5 Final Clearing Agent  
Potassium tetrachloropalladium (II) K2PdCl4 Double Metal Salt 326.42
Potassium tetrachloroplatinum (II) K2PtCl4 Double Metal Salt (red) 415.11
Potassium hexachloroplatinum (IV) K2PtCl6 Slightly Soluble Double Metal Salt (yellow)  
Potassium Ferricyanide K3Fe(CN)6 Sensitizer Testing Agent
and clearing indicator		  
Sodium Chloride NaCl Salt 58.44
Sodium Sulfite Na2SO3 Final Clearing Agent  
Sodium tetrachloropalladium (II) Na2PdCl4 Double Metal Salt 294.19
Water (Distilled) H2O    
 
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