Analysis of information sources in references of the Wikipedia article "Liebermann reagent" in English language version.
Liebermann Reagent: Carefully add 5 g sodium nitrite to 50 mL sulfuric acid with cooling and swirling.
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: CS1 maint: archived copy as title (link)Liebermann's reagent: 2 g of sodium nitrate is dissolved in 20 mL of concentrated sulfuric acid.
Since his day the Liebermann reagent (6% potassium nitrite in conc. sulfuric acid) has been extensively used.
Liebermann Reagent: Carefully add 5 g sodium nitrite to 50 mL sulfuric acid with cooling and swirling.
{{cite web}}
: CS1 maint: archived copy as title (link)