Phenols Flashcards
soluble; clear dark brown to black solution
Phenol in 5% NaOH
%1 Phenol in FeCl3
Purple solution
%1 Cathecol in FeCl3
Clear colorless solution
%1 Thymol in FeCl3
Clear pale green solution
%1 a-naphthol in FeCl3
Dark red solution
Positive result: colored complexes
FeCl3 Test
Identify solubility of phenols
Solubility test
Detect phenolic compounds
FeCl3
1% phenol in Bromine Water test
Clear colorless solution with white prescription
Salicylic acid in Bromine water Test
Clear colorless solution with white prescription
Positive result: Clear colorless solution with white prescription
Bromine water test
Identify phenolics
Bromine water test
5% HCl in phenolphthalein
Clear colorless solution
5% NaOH in phenolphthalein
Pink solution
1% phenol in million’s test
Clear golden brown solution
5% albumin in Millon’s test
Clear yellowish solution with red precipitation
Positive result: red precipitation
Millon’s test
Ddetermine phenolic compounds in amino acids
Millon’s test
Test for carbonyl group
2,4 DNPH (Brady’s) Test
NaHSO3 Test
Acetone in Brady’s Test
Clear orange solution
Acetophenone in Brady’s Test
Yellow-Orange precipitation
Benzaldehyde in Brady’s Test
Orange solution
Formaldehyde in Brady’s Test
Reddish Orange Precipitation
Positive result:
yellow to orange=
red to orange=
Brady’s test
Who’s behind Brady’s test
Oscar Brady
Acetone in NaHSO3
White precipitation
Acetyldehyde in NaHSO3
White precipitation
Positive result: white precipitation
NaHSO3 Test
Determine if compound is an aldehyde or an aliphatic methyl ketone
NaHSO3 Test
Test for Methyl Kentones
Sodium Nitroprusside Test
Iodoform Test
Acetone in Sodium Nitroprusside Test
Wine red solution
Ethyl Methyl Ketone in Sodium Nitroprusside Test
Wine red solution
Positive result: wine red solution
Sodium Nitroprusside Test
Detect presence of acetone in urine
Sodium Nitroprusside Test
Acetone in Iodoform test
Canary yellow precipitation
Ethyl methyl ketone in Iodoform test
Canary yellow precipitation
Ethyl acetate
Clear colorless solution
Positive result: canary yellow precipitation
Iodoform test
Iodoform test - reagent
Wagner’s
Test for saccharides
Molisch’s test
Bial’s test
5% glucose in Molisch’s test
Purple ring
5% starch in Molisch’s test
Purple ring
Positive result: purple ring
Molisch’s test
Benzaldehyde in Molisch’s test
Dark red solution
General test for saccharides
Molisch’s test
Who’s behind Molisch’s test
Hans Molisch
5% glucose in bial’s test
Clear golden brown solution
5% ribose in Bial’s test
Dark blue solution
Positive result: blue solution
Bial’s test
Who’s behind Bial’s test
Manfred Bial
Components of Bial’s reagent
Orcinol, HCl, FeCl3
Components of Molisch’s test
10% a-naphthol in 95% ethanol
Test for aldehydes
Schiff’s test
Tollen’s test
Fehling’s Test
Acetone in Schiff’s Test
Clear colorless Solution
Acetophenone in Schiff’s Test
Clear colorless solution
Benzaldehyde in Schiff’s Test
Magenta red solution
Formaldehyde in Schiff’s test
Magenta red solution
Positive result: Magenta red solution
Schiff’s Test
Who’s behind of Schiff’s Test
Hugo Schiff
Components of Schiff’s Test - Reagent
NaHSO3 with organic dye pararosaline hydrochloride
Acetone in tollen’s Test
Clear Colorless solution
5% glucose in tollen’s Test
Silver mirror precipitation
Formaldehyde in tollen’s Test
Silver mirror precipitation
Benzaldehyde in tollen’s Test
Turbid gray solution
Positive result: silver mirror precipitation
Tollen’s reagent
Who’s behind the Tollen’s reagent
Bernhard Tollens
Acetone in Fehling’s test
Clear blue solution
Benzaldehyde in Fehling’s test
Clear blue solution
5% glucose in Fehling’s test
Brick red precipitation
Formaldehyde in Fehling’s test
Brick red precipitation
Positive result: brick red precipitation
Fehling’s test
Who’s behind the Fehling’s test
Herman von Fehling
Fehling’s test produce positive result with ________
Aliphatic aldehyde
Fehling’s test produce negative result with ________
Aromatic aldehyde/ketones
