alkali

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al·ka·li

, pl.

alkalies

,

al·ka·lis

(al'kă-lī, al'kă-līz),
1. A strongly basic substance yielding hydroxide ions (OH- in solution); for example, sodium hydroxide, potassium hydroxide.
2. Synonym(s): base (3)
3. Synonym(s): alkali metal
[Ar., al, the, + qalīy, soda ash]

alkali

/al·ka·li/ (al´kah-li) any of a class of compounds with pH greater than 7.0, which form soluble soaps with fatty acids, turn red litmus blue, and form soluble carbonates, e.g., hydroxides or carbonates of sodium or potassium.

alkali

[al′kəlī]
Etymology: Ar, al + galiy, wood ash
a compound with the chemical characteristics of a base. Usually used with reference to hydroxides of Group I metals and ammonium, alkalis combine with fatty acids to form soaps, turn red litmus blue, and enter into reactions with carbon dioxide that form water-soluble carbonates. See also acid, base. -alkaline, adj., alkalinity, n., alkalinize, alkalize, v.

al·ka·li

, pl. alkalies, pl. alkalis (al'kă-lī, -līz)
1. A strongly basic substance yielding hydroxide ions (OH-) in solution; e.g., sodium hydroxide, potassium hydroxide.
2. Synonym(s): base (3) .
3. Synonym(s): alkali metal.
[Ar., al, the, + qalīy, soda ash]

alkali

a soluble BASE or a solution of a base.

alkali

strongly basic substance yielding hydroxide (OH-) ions in solution, e.g. potassium hydroxide (KOH); sodium hydroxide (NaOH)

alkali,

n a compound able to form hydroxyl ions (OH) when dissolved in aqueous solutions. See also base.

al·ka·li

, pl. alkalies, pl. alkalis (al'kă-lī, -līz)
1. A strongly basic substance yielding hydroxide ions (OH-) in solution; e.g., sodium hydroxide, potassium hydroxide.
2. Synonym(s): base (3) .
3. Synonym(s): alkali metal.
[Ar., al, the, + qalīy, soda ash]

alkali (al´kəlī),

n a strong water-soluble base. A chemical substance that, in aqueous solution, undergoes dissociation, resulting in the formation of hydroxyl (OH) ions.

alkali

any one of a class of compounds such as sodium hydroxide that form salts with acids and soaps with fats; a base, or substance capable of neutralizing acids. Other properties include a bitter taste and the ability to turn litmus paper from red to blue. Alkalis play a vital role in maintaining the normal functioning of the body chemistry. See also acid-base balance, alkaline, base.

alkali disease
see selenium poisoning.
alkali reserve
the ability of the combined buffer systems of the blood to neutralize acid. The pH of the blood normally is slightly on the alkaline side, between 7.35 and 7.45. Since the principal buffer in the blood is bicarbonate, the alkali reserve is essentially represented by the plasma bicarbonate concentration. However, hemoglobin, phosphates and other bases also act as buffers. A lowered alkali reserve means a state of acidosis; increased reserve indicates alkalosis. Alkali reserve is measured by the combining power of carbon dioxide, which is the amount of carbon dioxide that can be bound as bicarbonate by the blood.
References in periodicals archive ?
Low alkali Cement: ASTM C 150 recommended limit of alkalies less than 0.
Gujarat Alkalies and Chemicals Limited (GACL) was established in the year 1973 to manufacture Caustic Soda and allied products.
4 crore1 bank facilities of Sree Rayalaseema Alkalies and Allied Chemicals Limited on notice for withdrawal for one year at the request of the company.
The battery used for the SX-70 was a unique flat package that produced 6 volts, without strong alkalies or heavy metals, While the PolaPulse battery wasn't suited for powering devices like radios, CD players or toys, some alternate applications have been flashlights and blinking warning indicators.
Rubber, for example, offers considerable resistance to abrasion and chemicals, including most inorganic salts, alkalies and some organic chemicals, even muriatic acid.
Basic chemicals also known as Heavy Chemicals such as acids, alkalies, salts and organic chemicals.
Recycling of spent acids and alkalies, ion exchange separation for hexavelant chrome solutions, ion exchange and/or adsorption for the recovery of toxic metals, and treatment for the removal and recovery of oil and grease (including the use of ultrafiltration followed by reverse osmosis), are the more recent environmental technologies that must be considered.
For protection against attack by acids or alkalies from industrial wastes or other sources, sewers built in place may be lined with vitrified clay plates, prefabricated bituminous liners, or coatings.
It suggests that tea, alkalies, petroleum refining, rubber, poultry, non-ferrous industries, ship building, motor cycles and photographic goods industries are ranked as the highly concentrated industries followed by tobacco, leather footwear, paper, tyres, fertiliser and iron and steel.
Quarried stone impregnated with resin also provides exceptional chemical resistance to most acids, alkalies, and solvents.
It is resistant to nitric and hydrochloric acids, alkalies, alcohols and sulfuric acid (up to 60%) and can withstand multiple steam sterilizations up to 120 [degrees] C.
Therefore, the bonding and additive materials used to prepare reclaimed sand for cores and molds work on grains essentially free from clays, alkalies, organic materials and sharp edges.