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Naphthalene

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by

Mohammed Attia

on 24 October 2014

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Transcript of Naphthalene

Naphthalene
General Class Reaction:
Structure
Physical Characters
Condition
Solid, Crystalline, Micro-crystals
Colour
White
Odour
Naphthalene odour
Solubility
Insoluble with water
Insoluble with dil HCl
Insoluble with 10%NaOH
L.P: Neutral
Action of Sodalime (CaO+NaOH):
Action of 30% sodium hydroxide:
-On cold: No action
-On Hot: No action
Action of Conc.Sulphuric:
-On cold: No action
-On Hot: Sulphonation
Action of ferric chloride:
No action
-On cold:No action
-On Hot:No action
1- Nitration test: Yellow solid product with bitter almond odour
2- Sulphonation test: Clear solution difficult to obtain.
3- Picrate test: Yellow needle crystals
Thanks for your attention
Done by:
Mohammed Attia
Procedure:
0.25gm unk
+1ml Conc.H2So4
Step1:
Step2:
Procedure:(Preparation)
add 0.25gm Naphthalene
+3ml Picric acid
W.B
Dry test tube
W.B
5min
20ml water
Pour the content of test tube on beaker
Mixing well
Till formation of crystals
Procedure:
0.25gm unk
+1ml Conc.H2SO4
+1ml Conc.HNO3
Step1:
Dry test tube
W.B
5min
Step2:
20ml water
Pour the content of test tube on beaker
Don't miss the equation and mechanism
Full transcript