Glauber's salt


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Glauber's salt,

common name for sodium sulfate decahydrate, Na2SO4·10H2O; it occurs as white or colorless monoclinic crystals. Upon exposure to fairly dry air it effloresces, forming powdery anhydrous sodium sulfatesodium sulfate,
chemical compound, Na2SO4. It is a white, orthorhombic crystalline compound at ordinary temperatures; above 100°C; it assumes a monoclinic structure, and above about 250°C; it assumes a hexagonal structure.
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. Johann GlauberGlauber, Johann Rudolf
, 1604–70, German alchemist. A forerunner of scientific chemists, Glauber made many practical advances in analytical chemistry; he devised new procedures and was the first to prepare several compounds, including Glauber's salt. Little is known of his life.
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 was the first to produce the salt (from Hungarian spring waters). The naturally occurring salt is called mirabilite. Glauber's salt is water soluble, has a salty, bitter taste, and is sometimes used in medicine as a mild laxative; it is also used in dyeing.

Glauber's salt

[′glau̇·bərz ‚sȯlt]
(inorganic chemistry)
Na2SO4·10H2O Crystalline hydrated sodium sulfate; loses water when exposed to air; water soluble, alcohol insoluble; used in textile dyeing and medicine.
References in periodicals archive ?
PCM Short List PCM Type Melting Latent Source Heat of Temperature, Melting, [degrees]C kJ/kg ([degrees]F) (Btu/lb) [Na.sub.2]S Salt 32 (89.6) 251 Zalba et [O.sub.4] 10 Hydrate (108) al., 2003 [H.sub.2]O (Glauber's salt) [Na.sub.2] Salt 48 (118) 206 Kenisarin [S.sub.2] Hydrate (88.7) and [O.sub.3]5 Mahkamov, 2007 [H.sub.2]O (Sodium Thiosulfate Pentahydrate) C[H.sub.3] Fatty 44 (111) 181 Chemical [(C[H.sub.2]).sub.10] Acid (77.9) Properties COOH Handbook, 1999 (Lauric acid) Final Selection
The quality of Glauber's salt tends to be more constant but the amounts required can corrode concrete.
Then Glauber's salt was added to the dye bath and process continued further for 30 min.