Reagents and Results! Flashcards
1
Q
Aldehyde - Steam Distillation
A
- Fehlin I and Fehlin II
-Result: Red perticipate in presence of Formaldehyde - Schiffs reagent
-Result: Red or Red-Violet colour in presence of Formaldehyde
2
Q
Cyanide - Steam Distillation
A
- Berlin Blue
-Result: Blue or Dark Blue - Picric
-Result: Orange or Brown colour in Filter paper (strip)
3
Q
Hydrogen Phosphide
A
- Result:
-Fully Positive = Orange
-Trace results = Yellow
4
Q
Chlorinated Aliphatic Hydrocarbons - Fugiwars reaction
A
- Results: Pink or Red ring
5
Q
Phenols/Cresols
A
- Reagent: Ferric Chloride
-Result:
-Negative = Yellow
-Phenol Positive = Blue
-Cresol Positive = Blue-Green
-Acetic Acid Positive = Red - Reagent: Millon’s reagent
-Result: Positive for Phenols, Naphthols, Cresols = Red or Pink
6
Q
Warfarin - TLC
A
- Result: Blue stain on Yellow background
7
Q
Brodifacoum - TLC
A
- Reagent: 5% KOH solution in Methane
-Result: Dark Blue spots
8
Q
Organophosphate
A
- Reagent: Bromthymol Blue
-Result: Positive shows slow Blue to Yellow colour change, Negative shows fast Blue to Yellow colour
9
Q
Carbamate Aldicarb - TLC
A
- Result: Dark stain on Green background
10
Q
MCPA - TLC
A
- Reagent: Bromthymol Blue
-Result: Yellow stain on Blue background - Reagent: AgNO3
-Result: Dark stain under UV light
11
Q
DNOC - Extraction Distillation
A
- Result: NaOH is dyed Yellow
12
Q
Monensin and Salinomycin - TLC
A
- Reagents: Vaniline in Benzinalcahol and Sulfuric Acid in Benzinalcahol (together)
-Result Monensin: Dark Pink stain
-Result Salinomycin: Dark Purple stain on Pale background
13
Q
Paracetamolum - TLC
A
- Reagent: Concentrated Nitric Acid
-Result: Yellow stain
14
Q
Alkaloids - Strass and Otto method
A
- Reagent: Dragendorff agent
-Result: Orange in presence of Alkaloid Papaverin - Reagent: Marquis agent
-Result: Dark Blue in presence of Alkaloid
15
Q
Atropine - TLC
A
- Reagent: Dragendorff reagent
-Result: Orange or Brown stains on Yellow background
