Iron chloride, reagent

Bipyridine — Iron(III) Chloride Reagent (Emmerie-Engel Reagent) 217... 

Iodine starch inclusion compounds 46 Iodine vapor reagent 46, 64, 78 2-Iodoestrone 66 Ipecacuanha alkaloids 46, 263 Ipecacuanhae radix extract 263 Iron cadons 144, 217, 311 Iron(IIl) chloride reagent 170,216,314 Iron(III) thiocyanate reagent 170 Isoascorbic acid 376 Isoleucine 246,247... 

Ferric chloride-Silica, 134 Ferric nitrate/KlO Bentonite, 134 Grignard reagents-Iron(III) reagents, 211... 

If pieces of iron are added to a solution, and the mixture is filtered, tin(II) ions can be detected with mercury(II) chloride reagent. A similar result is obtained on boiling the solution with copper or antimony. 

Tappi standard T 223 outlines the procedure for pentosan analysis. Briefly, wood meal is boiled in 3.85 N HCl with some NaCl added. Furfural is generated and distilled into a collection flask. The furfural is determined colorimetrically with orcinol-iron(III) chloride reagent. Another method also generates furfural, and the furfural is determined gravimetrically by precipitation with 1,3,5-benzenetriol. These and other methods of pentosan analysis are described and discussed in Browning s book (36). 

Fig. 1 Densitograms of 25.00 ixg ( )-a-tocopherol (a) without using a visualizing reagent (b) after detection with 2,2 -dipiry-dyl-iron(III) chloride reagent.

Fig. 2b Thin layer chromatogram of the 80 % methanol extracts of Cortex Albiziae, sprayed with Trichloroacetic acid- potassium hexacyanoferrate-iron-III-chloride reagent (VIS)...

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