Fundamental Organic Chemistry
Fundamental Organic Chemistry
Fundamental Organic Chemistry
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OH<br />
1-Phenol<br />
Phenol is a colorless crystals in pure state, which turned to light red when<br />
exposed to air it has characteristic odor. Soluble in water, alcohols, ethers, and<br />
sodium hydroxide. Highly toxic .<br />
Test Observation Result<br />
1-Ferric chloride test:<br />
Diluted solution of phenol in alcohol then add<br />
2 drop of FeCl 3 .<br />
Violet color appear The compound<br />
from phenols<br />
2-Azo dye formation test:<br />
Take 3 test tube<br />
Tube (1): 1ml of aniline +3.5ml of conc. HCl<br />
Tube (2): 1ml of sodium nitrite NaNO 2<br />
Tube (3): phenol dissolved in excess NaOH.<br />
Keep the 3 test tubes in ice bath& Put tube<br />
Red dye Dye is Benzene azo<br />
phenol (36)<br />
(2) (1) slowly, then add mixture to tube (3).<br />
NH 2 N N OH<br />
NaNO 2<br />
HCl<br />
N<br />
NCl<br />
Aniline<br />
Dyazonium salt<br />
+<br />
N NCl OH<br />
Dyazonium salt Phenol Benzene azo phenol<br />
…….(36)<br />
70
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