Chemical test for Myrrh

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Chemical test for Myrrh
Preliminary observations:
Size and shape: rounded or irregular tears or masses
Odour: agrreable and aromatic
Colour: Externally reddish brown, internally brownish
Taste: Aromatic, bitter and acrid
Extra feature: Breaks with a brittle fracture, with somewhat granular, translucent surface
Solubility: Insoluble in water, but soluble in chloroform and ether

Chemical test:


SI.No.
Test
Observation
Inference

1.
Triturate with water
Yellowish brown emulsion
Myrrh may be present
2.
Extract small portion of powdered drug with solvent ether, evaporate the extract in such a way that the residue is left as a resinous thin film, pass the vapors of bromine over the film produced .
A violet colour is produced
Myrrh may be present
3.
Dry etherial extract when treated with bromine vapours
Reddish colour obtained
Myrrh may be present

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