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Glossary of terms

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Sulfur gas - Sulfur dioxide (SO2). Gas with a pungent odor, highly soluble in water. It's poisonous.

Carbon dioxide - Carbon dioxide (CO2) Colorless gas without a smell.

Carnation - A family of herbs are also semishrubs of the clove family.

Heliotropin - Aromatic aldehyde contained in the colors of the heliotrope.

Geranilacetate - A sophisticated ether used in perfumery.

Geraniol - A fragrant substance contained in geranium oil (the smell of a rose).

Hyacinthin - Viscous liquid with the smell of hyacinth.

Hydroquinone - A crystalline substance (dihydroxybenzene), soluble in water, also alcohol.

Hyposulfite - See sodium sulfate acid.

Gypsum - One of the crystalline hydrates of calcium sulphate (CaSO4 * 2H2O). Snow-white mass or crystals, poorly soluble in water.

Glet lead - Red modification of lead oxide (PbO)

Clay - A plastic sedimentary rock containing oxides of silicon, aluminum plus other elements, but similar to water.

Clay smelting - A substance of mineral origin, consisting of silicon dioxide, aluminum oxide and a number of other oxides. Used as a filler is also a stabilizer in the production of rubber, paper, fabrics.

Glycerol - Trihydric alcohol (C3H8O3) Viscous liquid soluble in water.

Mustard - Family one-plus of perennial grasses of the cruciferous family. Seeds contain mustard oil.

Graphite - Allotropic modification of carbon. Gray-black substance with metallic luster.

Gum arabic - Viscous transparent liquid, released by some types of acacias. When dissolved in water, forms a sticky solution.

Gummigut - Condensed milky juice of some trees of the Klucian family.

Gummilac - Varnish obtained on the basis of gummigut.

Gutta - percha - A brutal skin-like product of latex coagulation.

Gutta-percha artificial - Artificially obtained product based on trans-polyisoprene.