Detection of Separated Compounds on the Plate

Reagents applied to GF254 plate without subsequent heating  

Potassium permanganate Potassium permanganate Potassium permanganate Antimony pentachloride Phosphomolybdic acid 

2% wh in carbon tetrachloride 3% wh in ethanol, then expose plate to ammonia vapour 

Further information on the nature of some particular classes of additives can then be obtained by spraying fresh plates with more specific chromogenic reagents (Table 5.4). 

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