Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocessed artificial resins, unprocessed plastics; manures; fire extinguishing compositions; tempering and soldering preparations; chemical substances for preserving foodstuffs; tanning substances; adhesives used in industry; chemicals and combinations of chemicals for use in tin plating and in immersion tin processes; immersion tin plating compositions for the manufacture of printed circuit boards