1. ALCOHOLS

2. Aliphatic
Aromatic
Methanol
Ethanol
Glycerol
Benzyl alcohol

3. Methanol Ethanol Glycerol Benzyl alcohol Physical properties: State
Color
Odor
Inflammability
Change in appearance
Change in odor
Color imparted to the flame
Residue
Comment
Liquid, mobily, true
Liquid, viscous, true
Liquid, oily, true
Colorless
Characteristic odor
Butter almond odor
Ignition test:
Inflammable, luminous, smoky
Inflammable, non luminous, non smoky
Volatilization
No change
No change
No residue
The compounds are aliphatic
The compound is aromatic

4. Acid– base properties: [Solubility or Miscibility]
Methanol
Ethanol
Glycerol
Benzyl alcohol
H2O
L.P.
Dil. HCl
10% NaOH
Conc. H2SO4
Comment:
Miscible in H2O
Immiscible
No change
Immiscible
Immiscible
Immiscible
All the compounds are neutral

5. Methanol Ethanol Glycerol Benzyl alcohol Preliminary test: Soda lime
On cold:
On hot:
30% NaOH
FeCl3
Conc. H2SO4
Not done (only for solid)
No reaction in all
No reaction in all
Benzyl alcohol drops Conc. H2SO4 (on the wall)
Dirty gleatinous white ppt
No reaction in all
Not done

6. General test: Oxidation test:
Methanol OX Formaldehyde OX Formic acid
Ethanol OX Acetaldehyde OX Acetic acid
Benzyl alcohol OX Benzaldehyde OX Benzoic acid

7. Specific test: Iodoform test Alcohol + 10% NaOH + xss I2 No yellow ppt
Methanol
Ethanol
Specific test:
Iodoform test
Alcohol + 10% NaOH + xss I2
No yellow ppt
Yellow ppt

8. Methanol
Ethanol
Specific test:
2. Esterification test

9. IR Location Comment Specific test: 3. Borax test for glycerol
Borax + H2O (to dissolve it) + 2 drops ph.ph. + glycerol
Disappearance of pink color (( glycerol borate))
very strong acid
4. Conc. H2SO4 test for benzyl alcohol
Benzyl alcohol + Conc. H2SO Dirty white gelatinous ppt IR
Location
Comment
3500 – 3200 cm -1
OH functional gp streatching band
< 3000 cm -1
CH aliphatic streatching band
> 3000 cm -1
CH aromatic streatching band