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Naphthalene's minimum odor threshold is 0.084 ppm for humans. [43] Mothballs and other products containing naphthalene have been banned within the EU since 2008. [44] [45] In China, the use of naphthalene in mothballs is forbidden. [46] Danger to human health and the common use of natural camphor are cited as reasons for the ban.
A solution of lithium naphthalenide, the lithium salt of naphthalene, in tetrahydrofuran. The alkali metal naphthalene salts are prepared by stirring the metal with naphthalene in an ethereal solvent, usually as tetrahydrofuran or dimethoxyethane. The resulting salt is dark green. [2] [3] [4] The anion is a radical, giving a strong EPR signal ...
Armstrong's acid (naphthalene-1,5-disulfonic acid) is a fluorescent organic compound with the formula C 10 H 6 (SO 3 H) 2. It is one of several isomers of naphthalenedisulfonic acid. It a colorless solid, typically obtained as the tetrahydrate. [1] Like other sulfonic acids, it is a strong acid. It is named for British chemist Henry Edward ...
Black salt is typically used for finishing or medicinal purposes. Flavored salts are any type of regular salt that is blended with herbs or other flavorings (look for salts flavored with rosemary ...
The sulfonic acid derivatives of 1-naphthylamine are used for the preparation of azo dye.These compounds possess the important property of dyeing unmordanted cotton.. An important derivative is naphthionic acid (1-aminonaphthalene-4-sulfonic acid), which is produced by heating 1-naphthylamine and sulfuric acid to 170–180 °C in the presence of crystallized oxalic acid.
Aminonaphthalenesulfonic acids are compounds with the composition C 10 H 6 (NH 2)(SO 3 H), being derived from naphthalene (C 10 H 8) substituted by an amino and sulfonic acid groups. These compounds are colorless solids. They are useful precursors to dyes. [1]
Saline (also known as saline solution) is a mixture of sodium chloride (salt) and water. [1] It has a number of uses in medicine including cleaning wounds, removal and storage of contact lenses, and help with dry eyes. [2] By injection into a vein, it is used to treat hypovolemia such as that from gastroenteritis and diabetic ketoacidosis.
1-Naphthol, or α-naphthol, is an organic compound with the formula C 10 H 7 OH.It is a fluorescent white solid. 1-Naphthol differs from its isomer 2-naphthol by the location of the hydroxyl group on the naphthalene ring.