Transcription of 2.3. IDENTIFICATION - uspbpep.com
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2.3. IDENTIFICATION - uspbpep.com
EUROPEAN PHARMACOPOEIA IDENTIFICATION reactions of ions and functional IDENTIFICATION01/2008 IDENTIFICATION REACTIONSOF IONS AND FUNCTIONAL GROUPSACETATESa) Heat the substance to be examined with an equal quantityofoxalic acid R. Acid vapours with the characteristic odourof acetic acid are liberated, showing an acid reaction ( ).b) Dissolve about 30 mg of the substance to be examined in3mlofwater Ror use 3 ml of the prescribed solution. Addsuccessively ml oflanthanum nitrate solution R, M iodineand ml ofdilute ammonia to boiling. Within a few minutes a blue precipitateis formed or a dark blue colour a test-tube about 180 mm long and 18 mm in externaldiameter, place about 15 mg of the substance to be examined,ortheprescribedquantity, small test-tube about 100 mm long and 10 mm in externaldiameter containingwater Rto act as a condenser.
2.3.1. Identification reactions of ions and functional groups EUROPEAN PHARMACOPOEIA 6.0 Shake and allow to stand. A curdled, pale yellow precipitate is …
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