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Molisch reaction

Molisch reaction

9.9
A chemical test that shows a violet ring when sugars are present
  • noun
  • /ˈmoʊlɪʃ ˌrɛkʃən/
  • Specialized
translation icon : reacción de Molisch
  • A positive Molisch reaction resulted in the appearance of a violet ring in the test tube.

Examples

  • The Molisch reaction is commonly used in laboratories to identify the presence of carbohydrates in food samples.

  • Chemistry students performed the Molisch reaction as part of their experiment on biomolecule detection.

  • The Molisch reaction is a vital test in carbohydrate chemistry.

  • Have you performed the Molisch reaction in your lab?

  • A positive Molisch reaction resulted in the appearance of a violet ring in the test tube.

  • Chemistry students performed the Molisch reaction as part of their experiment on biomolecule detection.

  • The Molisch reaction is commonly used in laboratories to identify the presence of carbohydrates in food samples.

Synonyms

Molisch's test
vsMolisch reaction
  • Specialized
9.3

A chemical test that shows sugars in a liquid by making a violet ring

is the non-possessive technical name for the same procedure
Molisch test
vsMolisch reaction
  • Specialized
8.4

A lab test that shows sugar by making a purple ring

is the name that sometimes appears with a possessive form
alpha-naphthol test
vsMolisch reaction
  • Specialized
8.3

A chemical test that shows a violet ring when sugar is in a liquid

uses the person-based name rather than the reagent-based name

Surface Forms

Morphology

Molisch + reaction

The headword 'reaction' clearly signals a chemical process, so a learner would infer this is a chemical reaction named after someone. However, 'Molisch' is a proper name with no lexical meaning, so the specific function — a carbohydrate-detection test producing a violet ring — cannot be derived from the constituents. Because the phrase partly signals its domain (chemistry) but not the precise diagnostic meaning, it is best classified as semi-transparent.

Etymology

Molisch reaction is named after the scientist Hans Molisch, who showed a small chemical test that makes a 'violet ring' when 'carbohydrates' are present. That's why the name now means the simple test used to find 'carbohydrates'.