How Do You Spell BOETTGER'S TEST?

Pronunciation: [bˈə͡ʊtd͡ʒəz tˈɛst] (IPA)

Boettger's test is a laboratory test used to identify certain types of bacteria. The spelling of this word is "bɛtɡərz tɛst" in IPA phonetic transcription. This word is pronounced as "bett-gerz test" in English. The IPA transcription helps to accurately represent the sounds of each individual letter and the stress on each syllable. The correct spelling of this word is important as it ensures clear communication and understanding in scientific research and medical contexts.

BOETTGER'S TEST Meaning and Definition

  1. Boettger's test is a historic chemical test that is used to detect the presence of amines, particularly primary amines. It is named after the German chemist and pharmacist Oskar Boettger, who developed this test in the late 19th century.

    In Boettger's test, a small amount of the compound being tested is mixed with a solution of sodium nitroprusside and sodium hydroxide. The resulting mixture is then heated gently. If the compound contains a primary amine, a deep blue color will start to develop, indicating a positive result for the presence of an amine group.

    The mechanism behind Boettger's test involves the reaction between the nitroprusside ion and the primary amine. In this reaction, a nitrogen atom from the primary amine replaces one of the cyanide ligands on the nitroprusside ion, forming a complex with a characteristic blue color.

    Boettger's test is useful in organic chemistry for identifying the presence of amines in various organic compounds, including drugs, dyes, and amino acids. It provides a quick and simple qualitative analysis tool for identifying primary amines that lack functional groups like carbonyl or hydroxyl, which are easily detected by other tests.

    Although Boettger's test is considered reliable for detecting primary amines, it may not be suitable for identifying secondary or tertiary amines, as they produce weaker or no color formations upon heating. In such cases, alternative tests or techniques are used to confirm the presence of these amines.

  2. For glucose: the suspected urine, alkalinized by means of sodium bicarbonate, is boiled with bismuth subnitrate; the presence of sugar is indicated by a black precipitate.

    A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

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