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Azobisisobutyronitrile (abbreviated AIBN [1]) is an organic compound with the formula [(CH 3) 2 C(CN)] 2 N 2. This white powder is soluble in alcohols and common organic solvents but is insoluble in water. It is often used as a foamer in plastics and rubber and as a radical initiator.
The chemistry of maleic anhydride is very rich, reflecting its ready availability and bifunctional reactivity. It hydrolyzes, producing maleic acid, cis-HOOC–CH=CH–COOH. With alcohols, the half-ester is generated, e.g., cis-HOOC–CH=CH–COOCH 3. [8] Maleic anhydride is a classic substrate for Diels-Alder reactions. [9]
A spatula is a broad, flat, flexible blade used to mix, spread and lift material [1] including foods, drugs, plaster and paints. In medical applications, "spatula" may also be used synonymously with tongue depressor .
Rubber policemen A type of policeman which is made of plastic and is formed into spatula shapes at the ends. A policeman is a hand-held flexible natural-rubber or plastic scraper. The common type of it is attached to a glass rod and used in chemical laboratories to transfer residues of precipitate or solid on glass surfaces when performing ...
To use a separating funnel, the two phases and the mixture to be separated in solution are added through the top with the stopcock at the bottom closed. The funnel is then closed and shaken gently by inverting the funnel multiple times; if the two solutions are mixed together too vigorously emulsions will form.
Closeup of a Scoopula to display the logo Two Scoopulas, one atop the other to show full view. Scoopula is a brand name of a spatula-like scoop utensil used primarily in experimental laboratories to transfer solids: to a weighing paper for weighing, to a cover slip to measure melting point, or a graduated cylinder, or to a watch glass from a flask or beaker through scraping.
To use, mix the included gel and powder packet to create a frothy mixture, then apply it with the included spatula. Key ingredients : Carbonic acid, hydrolyzed hyaluronic acid, royal jelly extract ...
Mercury(II) nitrate is an inorganic compound with the chemical formula Hg(N O 3) 2. It is the mercury(II) salt of nitric acid HNO 3. It contains mercury(II) cations Hg 2+ and nitrate anions NO − 3, and water of crystallization H 2 O in the case of a hydrous salt. Mercury(II) nitrate forms hydrates Hg(NO 3) 2 ·xH 2 O.