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BSc. Forensic Science (Practicals) - LJMU. > 4103FSBMOL - Practical 1 - Colour Tests and Melting Point Determination of Adulterants. > Flashcards

4103FSBMOL - Practical 1 - Colour Tests and Melting Point Determination of Adulterants. Flashcards

Colour Tests and Melting Point Determination of Different Reagents to help identify Adulterants.

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1
Q

What is the main role of Adulterants when used to cut illicit drugs?

A

To reduce or mask the purity of a drug and to increase the profits made by drug dealers.

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2
Q

Give some Examples of Adulterants which can be used?

A
  • Aspirin.
  • Paracetamol.
  • Caffeine.
  • Starch.
  • Sugar.
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3
Q

Name the 8 Examples of the Colour Tests which we used in Practical 1 to identify Adulterants?

A
  • Ferric Chloride Test.
  • Iodine Test.
  • Libermann’s Test.
  • Marquis Test.
  • Amalic Test.
  • Mandelin’s Test.
  • Mecke’s Test.
  • Froehde’s Test.
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4
Q

What is the Ferric Chloride Test used for?

A

To test for Salicylates and Phenol containing groups.

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5
Q

What is the Iodine Test used for?

A

To test for Starch.

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6
Q

What is the Libermann’s Test used for?

A

To test for Phenols and Amines.

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7
Q

What is the Marquis Test used for?

A

To test for Alkaloids, non-alkaloids, opioids and Methamphetamine.

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8
Q

What is the Amalic Test used for?

Which Adulterant does is this Test used to determine?

A

To test for xanthines.

Positive Test for Caffeine.

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9
Q

What is the Mandelin’s Test used for?

A

To test for Steroids, Alkaloids and Aspirin.

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10
Q

What is the Mecke’s Reagent Test used for?

A

To test for Opium Alkaloids.

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11
Q

What is the Froehde’s Test used for?

A

To test for Codeine, Opium and LSD.

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12
Q

Which is the only test which has to go before any other test?

A

Marquis Test.

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13
Q

Which is the only test that has to be completed in a fume hood?

Why?

A

Amalic Acid Test.

It produces toxic fumes which can’t be inhaled!

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14
Q

What are the name of the crystals added in the Amalic Test?

A

Potassium Chlorate Crystals.

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15
Q

What steps take place in the Amalic Test?

A
  1. Add Amalic Reagent.
  2. Add some Potassium Chlorate crystals.
  3. Evapourate to Dryness.
  4. Add Ammonium Hydroxide.
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16
Q

What obeservations can be seen when the Ferric Chloride Test is added to Aspirin?

A

No colour change/ reaction.

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17
Q

What obeservations can be seen when the Iodine Test is added to Aspirin?

A

No colour change/ reaction.

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18
Q

What obeservations can be seen when the Libermann’s Test is added to Aspirin?

A

Colourless to Brown colour change.

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19
Q

What obeservations can be seen when the Marquis Test is added to Aspirin?

A

No colour change/ reaction.

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20
Q

What obeservations can be seen when the Amalic Test is added to Aspirin?

A

Addition of Potassium Chloride = yellow, after evaporation = orange/yellow, after addition of ammonium hydroxide = brown.

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21
Q

What obeservations can be seen when the Mandelin’s Test is added to Aspirin?

A

Black colour formed.

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22
Q

What obeservations can be seen when the Mecke’s Test is added to Aspirin?

A

Slight Beige Colour formed.

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23
Q

What obeservations can be seen when the Froehde’s Test is added to Aspirin?

A

Purple Crystals were formed.

24
Q

What obeservations can be seen when the Ferric Chloride Test is added to Paracetamol?

A

Dark Moudly Green Colour Formed.

25
Q

What obeservations can be seen when the Iodine Test is added to Paracetamol?

A

No colour change/ reaction.

26
Q

What obeservations can be seen when the Libermann’s Test is added to Paracetamol?*

A

Brown/ Black Colour Formed.

27
Q

What obeservations can be seen when the Marquis Test is added to Paracetamol?

A

No colour change/ reaction.

28
Q

What obeservations can be seen when the Amalic Test is added to Paracetamol?

A

Addition of Potassium Chloride = yellow, after evaporation = orange/yellow, after addition of ammonium hydroxide = brown.

29
Q

What obeservations can be seen when the Mandelin’s Test is added to Paracetamol?

A

Brown/ Green Colour Formed.

30
Q

What obeservations can be seen when the Mecke’s Test is added to Paracetamol?

A

No colour change/ reaction.

31
Q

What obeservations can be seen when the Froehde’s Test is added to Paracetamol?

A

Light Blue Colour Formed.

32
Q

What obeservations can be seen when the Ferric Chloride Test is added to Caffeine?

A

No colour change/ reaction.

33
Q

What obeservations can be seen when the Iodine Test is added to Caffeine?

A

No colour change/ reaction.

34
Q

What obeservations can be seen when the Libermann’s Test is added to Caffeine?

A

Light Yellow Colour Formed.

35
Q

What obeservations can be seen when the Marquis Test is added to Caffeine?

A

No colour change - slight cloudiness.

36
Q

What obeservations can be seen when the Amalic Test is added to Caffeine?

A

Addition of Potassium Chloride = yellow, after evaporation = orange/brown, after addition of ammonium hydroxide = pink/purple.

37
Q

What obeservations can be seen when the Mandelin’s Test is added to Caffeine?

A

No colour change/ reaction.

38
Q

What obeservations can be seen when the Mecke’s Test is added to Caffeine?

A

No colour change/ reaction.

39
Q

What obeservations can be seen when the Froehde’s Test is added to Caffeine?

A

No colour change/ reaction.

40
Q

What obeservations can be seen when the Ferric Chloride Test is added to Starch?

A

No colour change/ reaction.

41
Q

What obeservations can be seen when the Iodine Test is added to Starch?

A

Blue/Black Colour Formed.

42
Q

What obeservations can be seen when the Libermann’s Test is added to Starch?

A

No colour change/ reaction.

43
Q

What obeservations can be seen when the Marquis Test is added to Starch?

A

No colour change/ reaction.

44
Q

What obeservations can be seen when the Amalic Test is added to Starch?

A

Dissolved in HCl, Yellow on the addition of Potassium Chlorate crystals. After evapouration = colourless, after addition of ammonium hydroxide = colourless.

45
Q

What obeservations can be seen when the Mandelin’s Test is added to Starch?

A

No colour change/ reaction.

46
Q

What obeservations can be seen when the Mecke’s Test is added to Starch?

A

Light Beige Colour Formed.

47
Q

What obeservations can be seen when the Froehde’s Test is added to Starch?

A

No colour change/ reaction.

48
Q

What obeservations can be seen when the Ferric Chloride Test is added to Sugar?

A

No colour change/ reaction.

49
Q

What obeservations can be seen when the Iodine Test is added to Sugar?

A

No colour change/ reaction.

50
Q

What obeservations can be seen when the Libermann’s Test is added to Sugar?

A

No colour change/ reaction.

51
Q

What obeservations can be seen when the Marquis Test is added to Sugar?

A

Light Yellow Colour Formed.

52
Q

What obeservations can be seen when the Amalic Test is added to Sugar?

A

Addition of Potassium Chloride = yellow, after evaporation = brown residue, after addition of ammonium hydroxide = brown.

53
Q

What obeservations can be seen when the Mandelin’s Test is added to Sugar?

A

No colour change/ reaction.

54
Q

What obeservations can be seen when the Mecke’s Test is added to Sugar?

A

No colour change/ reaction.

55
Q

What obeservations can be seen when the Froehde’s Test is added to Sugar?

A

No colour change/ reaction.

BSc. Forensic Science (Practicals) - LJMU. (8 decks)

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