Définition sodium dans le Dictionnaire anglais Collins English Dictionary & Thesaurus

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Consultez aussi:

sodium amide
sodium amytal
sodium benzoate
sodium bicarbonate

sodium n

a a very reactive soft silvery-white element of the alkali metal group occurring principally in common salt, Chile saltpetre, and cryolite. Sodium and potassium ions maintain the essential electrolytic balance in living cells. It is used in the production of chemicals, in metallurgy, and, alloyed with potassium, as a cooling medium in nuclear reactors. Symbol: Na; atomic no.: 11; atomic wt.: 22.989768; valency: 1; relative density: 0.971; melting pt.: 97.81±0.03°C; boiling pt.: 892.9°C

b (as modifier)
sodium light
(C19: New Latin, from soda + -ium)

diphenylhydantoin sodium n a white soluble bitter-tasting powder used as an anticonvulsant in the treatment of epilepsy. Formula: C15H11N2O2Na

pentobarbitone sodium n a barbiturate drug used in medicine as a sedative and hypnotic. Formula: C11H17N2O3Na, (U.S. equivalent) sodium pentabarbital

Pentothal sodium n a trademark for → thiopentone sodium

sodium amytal n another name for → Amytal

sodium benzoate n
a white crystalline soluble compound used as an antibacterial and antifungal agent in preserving food (E211), as an antiseptic, and in making dyes and pharmaceuticals. Formula: Na(C6H5COO), (Also called) benzoate of soda

sodium bicarbonate n
a white crystalline soluble compound usually obtained by the Solvay process and used in effervescent drinks, baking powders, fire extinguishers, and in medicine as an antacid; sodium hydrogen carbonate. Formula: NaHCO3, (Also called) bicarbonate of soda, baking soda

sodium carbonate n
a colourless or white odourless soluble crystalline compound existing in several hydrated forms and used in the manufacture of glass, ceramics, soap, and paper and as an industrial and domestic cleansing agent. It is made by the Solvay process and commonly obtained as the decahydrate (washing soda or sal soda) or a white anhydrous powder (soda ash). Formula: Na2CO3

sodium chlorate n
a colourless crystalline soluble compound used as a bleaching agent, weak antiseptic, and weedkiller. Formula: NaClO3

sodium chloride n
common table salt; a soluble colourless crystalline compound occurring naturally as halite and in sea water: widely used as a seasoning and preservative for food and in the manufacture of chemicals, glass, and soap. Formula: NaCl, (Also called) salt

sodium cyanide n
a white odourless crystalline soluble poisonous compound with an odour of hydrogen cyanide when damp. It is used for extracting gold and silver from their ores and for case-hardening steel. Formula: NaCN

sodium dichromate n
a soluble crystalline solid compound, usually obtained as red or orange crystals and used as an oxidizing agent, corrosion inhibitor, and mordant. Formula Na2Cr2O7, (Also called (not in technical usage)) sodium bichromate

sodium fluoroacetate n a white crystalline odourless poisonous compound, used as a rodenticide. Formula: Na(CH2FCOO)

sodium glutamate n another name for → monosodium glutamate

sodium hydroxide n
a white deliquescent strongly alkaline solid used in the manufacture of rayon, paper, aluminium, soap, and sodium compounds. Formula: NaOH, (Also called) caustic soda See also → lye

sodium hyposulphite n another name (not in technical usage) for → sodium thiosulphate

sodium lamp n another name for → sodium-vapour lamp

sodium nitrate n
a white crystalline soluble solid compound occurring naturally as Chile saltpetre and caliche and used in matches, explosives, and rocket propellants, as a fertilizer, and as a curing salt for preserving food such as bacon, ham, and cheese (E251). Formula: NaNO3

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