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  2. Nitric acid - Wikipedia

    en.wikipedia.org/wiki/Nitric_acid

    5.4.2 Analytical reagent. ... Commercial grade nitric acid solutions are usually between 52% and 68% ... Nitric acid can be used as a spot test for alkaloids ...

  3. List of reagents - Wikipedia

    en.wikipedia.org/wiki/List_of_reagents

    Millon's reagent: an analytical reagent used to detect the presence of soluble proteins Nitric acid: highly corrosive and toxic strong acid; used for the production of fertilizers, production of explosives, and as a component of aqua regia, as well as mixed acid for nitration of aromatic compounds Osmium tetroxide

  4. List of reagent testing color charts - Wikipedia

    en.wikipedia.org/wiki/List_of_reagent_testing...

    Reagent test Alcohols: Forms Lucas test in alcohols is a test to differentiate between primary, secondary, and tertiary alcohols. Alkaloids: Forms Froehde Liebermann Mandelin Marquis Mayer's Mecke Simon's: Amines, and amino acids: Forms Folin's: Barbiturates: Class Dille–Koppanyi Zwikker: Benzodiazepines: Class Zimmermann: Phytocannabinoids ...

  5. Primary standard - Wikipedia

    en.wikipedia.org/wiki/Primary_standard

    Standards are used in analytical chemistry. Here, a primary standard is typically a reagent which can be weighed easily, and which is so pure that its weight is truly representative of the number of moles of substance contained. Features of a primary standard include: High purity; Stability (low reactivity)

  6. Qualitative inorganic analysis - Wikipedia

    en.wikipedia.org/wiki/Qualitative_inorganic_analysis

    The 1st analytical group of cations consists of ions which form insoluble chlorides. As such, the group reagent to separate them is hydrochloric acid, usually used at a concentration of 1–2 M. Concentrated HCl must not be used, because it forms a soluble complex ([PbCl 4] 2−) with Pb 2+. Consequently, the Pb 2+ ion would go undetected.

  7. Category:Drug testing reagents - Wikipedia

    en.wikipedia.org/wiki/Category:Drug_testing_reagents

    Pages in category "Drug testing reagents" The following 26 pages are in this category, out of 26 total. ... Nessler's reagent; Nitric acid; R. Reagent testing ...

  8. Acid test - Wikipedia

    en.wikipedia.org/wiki/Acid_test

    An acid test is a qualitative chemical or metallurgical assay utilizing acid. Historically, it often involved the use of a robust acid to distinguish gold from base metals . Figuratively, the term represents any definitive test for attributes, such as gauging a person's character or evaluating a product's performance.

  9. Gmelin's test - Wikipedia

    en.wikipedia.org/wiki/Gmelin's_test

    Gmelin's test is a chemical test used for detecting the presence of bile pigments in urine. It is named after Leopold Gmelin, who introduced the test. [1] [2] [3] Five millilitres of urine is slowly added to five millilitres of concentrated nitric acid in a test-tube. Different coloured rings between the two layers are visible if bile pigments ...

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