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Chemical test for Tragacanth

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Chemical test for Tragacanth Organoleptic test: Appearance: Crystalline                                                          tragacanth Colour: White or faint yellow                                                 tragacanth Odour: None                                                                           tragacanth Taste: Mucilaginous                                                                tragacanth Solubility: Insoluble in alcohol, partially soluble in water      tragacanth Chemical test: SI.No. Test Observation Inference 1. To 4ml of 0.5%w/v solution add  0.5ml of HCl and heat for 30minutes on water bath Divide the hydrolyzed product in 2 parts a)       1 st part=Add 1.5ml of NaOH solution to neutralize and add Fehling’s solution A and B in equal quantities(mixed before) and warm over water bath. b)       2 nd part= Add barium chloride solution Red ppt o
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Chemical test for Benzoin

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Chemical test for Benzoin Objective:  To perform the chemical test for BENZOIN Biological source: It is a balsamic resin obtained from Styrax benzoin. Fam- Styraceae   Physical characteristics: Appearance           - Crystalline Colour                   - Greyish brown Odour                    - Aromatic and characteristics, balsamic Shape                    - Tear Taste                      - sweet and slightly acrid Sr. No. Test Observation Inference 1. Heat 0.5g of substance in dry test tube Evolve white fumes which condense to form white crystalline sublimate in the upper part of tube. Benzoin present 2. Alcoholic solution + water White milky solution formed Benzoin present 3. Alcoholic solution of litmus treat with litmus paper Acidic to litmus paper. Benzoin present 4. Heat 0
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Chemical test for Agar/Agar-Agar / Japaneese Isinglass

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Chemical test for Agar/Agar-Agar / Japaneese  Isinglass Organoleptic test: Appearance: Coarse,Crystalline                                              acacia, agar Colour: Pale yellow                                                                 agar Odour: Marine algae type                                                       agar Taste: Mucilaginous                                                                agar Solubility: Insoluble in coldwater, soluble in hot water         agar Chemical test: SI.No. Test Observation Inference 1. Boil 1gm of agar with 10ml of water until solution is affected, cool to room temperature A slip jet is formed. (Jelly like mass is formed) Agar 2. 0.2% solution of agar, + aqueous solution of tannic acid No Precipitate is formed Distinction from gelatin 3. Warm little sample in alcoholic solutio
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