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- Marquis_reagent abstract "Marquis' reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of formaldehyde and concentrated sulfuric acid, which is dripped onto the substance being tested. The United States Department of Justice method for producing the reagent is the addition of 100 mL of concentrated (95–98%) sulfuric acid to 5 mL of 40% formaldehyde. Different compounds produce different color reactions. Also, sometimes methanol is added to slow down the reaction process to observe the change in color better. Methanol does this by slowing down the polymerisation process.It is the primary presumptive test used in Ecstasy testing kits. It can also be used to test for such substances as opiates (e.g. codeine, heroin), and phenethylamines (e.g. 2C-B, mescaline).The test is performed by scraping off a small amount of the substance and adding a drop of the reagent (which is initially clear and colorless). The results are analyzed by viewing the color of the resulting mixture, and by the time taken for the change in color to become apparent:".
- Marquis_reagent wikiPageExternalLink marquis.htm.
- Marquis_reagent wikiPageExternalLink mdma_faq_testing_kits.shtml.
- Marquis_reagent wikiPageExternalLink Marquis_Reagent_%28English_Version%29.
- Marquis_reagent wikiPageID "291231".
- Marquis_reagent wikiPageRevisionID "605795647".
- Marquis_reagent hasPhotoCollection Marquis_reagent.
- Marquis_reagent subject Category:Analytical_reagents.
- Marquis_reagent subject Category:Chemical_tests.
- Marquis_reagent subject Category:Drug_testing_reagents.
- Marquis_reagent type Abstraction100002137.
- Marquis_reagent type ChemicalTests.
- Marquis_reagent type Cognition100023271.
- Marquis_reagent type Experiment105798043.
- Marquis_reagent type HigherCognitiveProcess105770664.
- Marquis_reagent type Inquiry105797597.
- Marquis_reagent type ProblemSolving105796750.
- Marquis_reagent type Process105701363.
- Marquis_reagent type PsychologicalFeature100023100.
- Marquis_reagent type Thinking105770926.
- Marquis_reagent type Trial105799212.
- Marquis_reagent comment "Marquis' reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of formaldehyde and concentrated sulfuric acid, which is dripped onto the substance being tested. The United States Department of Justice method for producing the reagent is the addition of 100 mL of concentrated (95–98%) sulfuric acid to 5 mL of 40% formaldehyde. Different compounds produce different color reactions.".
- Marquis_reagent label "Marquis reagent".
- Marquis_reagent label "Marquis-Reagenz".
- Marquis_reagent label "Odczynnik Marquisa".
- Marquis_reagent label "Реактив Марки".
- Marquis_reagent sameAs Marquis-Reagenz.
- Marquis_reagent sameAs Odczynnik_Marquisa.
- Marquis_reagent sameAs m.01qm0r.
- Marquis_reagent sameAs Q595557.
- Marquis_reagent sameAs Q595557.
- Marquis_reagent sameAs Marquis_reagent.
- Marquis_reagent wasDerivedFrom Marquis_reagent?oldid=605795647.
- Marquis_reagent isPrimaryTopicOf Marquis_reagent.