Millon reagent

Millon reagent Variety of colors after heating 1... 

Millon reagent A solution of mercury (5 g) in fuming nitric acid (10 ml) diluted with water (10 ml) is sprayed on the plate to yield yellow/orange spots that are intensified by heat (100°C). 

Tile Berlin blue reaction shows arbutin as a blue (--413), the Millons reagent as a yellow zone (- C) in sample 1. In sample 3, in the II, range of arbutin two minor blue (->13) and yellow ( C) zones are detectable. 

If phenols react with nitrites in the presence of mercuric salts (Millon reagent), orange to red colors are formed. Positive reactions are also observed with p-substituted phenols, but not with o,o -disubstituted phenols (21). 

Quantitative estimation by the Millon reagent yielded 95.6 per cent and by the phenol reagent, 97.6 per cent of the respective values given by commercial tyrosine. Confirmatory evidence that fraction A was tyrosine was... 

Millon s reagent Dissolve one part of mercury in two parts of nitric acid (d. 142) first in the cold and then by warming. Dilute the solution with two volumes of water. 

TLC Color reactions with Millon s and Pauly s reagents ... 

Millon s reagent is prepared by dissolving 1 part of mercury in 1 part of nitric acid (D 1 -41) first in the cold and afterwards at a gentle heat the solution obtained is diluted with twice its volume of water and allowed to settle, the clear liquid being decanted off. 

A number of preparative methods are available for the synthesis of WVI nitrides. The reaction of Millon s base [Hg2N]Br with WBr6 provides nitride 86 (Eq. (32)) [37]. The same reagent has been utilized in the synthesis of an interesting Wv complex 87 (Eq. (33)). This W2(p-N) complex can, in turn, be utilized to prepare a W nitride 88. Thus, treatment of 87 with Ph4PBr leads to a disproportionation reaction affording 88 and 89. 

B. Add a few drops of Millon s Reagent to a 1 100 aqueous solution. A white, curdy precipitate forms. 

Millon s Reagent To 2 mL of mercury in an Erlenmeyer flask add 20 mL of nitric acid. Shake the flask in a hood to break the mercury into small globules. After about 10 min add 35 mL of water, and if a precipitate or crystals appear, add sufficient 1 5 nitric acid (prepared from nitric acid from which the oxides have been removed by blowing air through it until it is colorless) to dissolve the separated solid. Add a 1 10 solution of sodium hydroxide, drop wise, with thorough... 

Strong Acid Fraction Aromaticity Ferric Chloride Folin-Ciocalteu Reagent Liebermann s Test Millon s Reagent Nessler s Reagent... 

Colour Tests. Ferric Chloride—brown Folin-Ciocalteu Reagent—blue Liebermann s Test—black Millon s Reagent— pink— red. 

Colour Tests. Ammoniacal Silver Nitrate—black p-Dimethyl-aminobenzaldehyde—red/- Ferric Chloride—green-brown Folin-Ciocalteu Reagent—blue Methanolic Potassium Hydroxide—red Millon s Reagent—red-orange Nessler s Reagent—black Palladium Chloride—orange - brown Potassium Dichromate—brown. 

Colour Tests. Liebermann s Test—orange Marquis Test— yellow Millon s Reagent—red Sulphuric Acid—yellow. 

Colour Tests. Folin-Ciocalteu Reagent—blue Mandelin s Test—green- blue rim Millon s Reagent—red. 

Colour Tests. Aromaticity (Method 2 —yellow/brown Folin-Ciocalteu Reagent—blue Liebermann s Test—violet-brown Millon s Reagent—red. 

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