MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 11
        

Plz give uses of Glycerol also analytical testa of Glycerol.

9 years ago

Answers : (1)

askIITIians Expert
21 Points
							

 

USES: Glycerol is used:

(i) as a sweetening agent in confectionery , beverages and medicines being non-toxic in nature.

(ii) in the manufacturing of explosives like dynamite and cordite.

(iii) in the manufacturing of plastics and synthetic fibres and alkyd resins.

(iv) as antifreeze in automobile radiators.

(v) in the preparation of good quality of transparent soap, hand lotions, vanishing creams, shaving creams and tooth pastes.

(vi) in the manufacture of various organic compounds like formic acid, allyl alcohol, acrolein, etc.

(vii) as a lubricant in watches and clocks.

(viii) in the preparation of non-drying inks, printing inks and stamp pads inks.

(ix) as a preservative.

Analytical Tests of Glycerol

(i) Acrolein test : When glycerol is heated with potassium hydrogen sulphate a very offensive odour is produced due to formation of acrolein. Its aqueous solution restores the colour of Schiff's reagent and reduces Fehling's solution and Tollen's reagent.

(ii) Dunstan's test : A drop of phenophthalein is added to approximately 5 mL of borax solution . The pink color appears. On adding 2-3 drops of glycerol, the pink color disappears on heating and disappears on cooling again.

(iii) To an equimolar mixture of phenol and glycerol. few drops of conc. H2SO4 are added and heated to 130o C. It is then cooled by adding water. Addition of ammonium hydroxide to this solution produces red color.

 

9 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 1,590 off

COUPON CODE: SELF10


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 70 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Get Extra Rs. 212 off

COUPON CODE: SELF10

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details