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 ?
Summary of energy industry products selected properties of alkali-activated materials and alkali effects on these materials, Proceeding of 27th International Colloquim: "Advanced Manufacturing and Repair Technologies in Vehicle Industry", 19-21.
It created a hive of industrial activity and a social melting pot of regional cultures, the entrance to which was framed for many local residents by two pubs, the Allison and the Alkali.
The present paper includes test results and alkali reactivity assessment of the selected silica aggregates, both rapid and slow alkali reactive.
However, because alkali bees nest in the ground, they couldn't be moved easily and so weren't supplied commercially in the way that honeybees were.
Tom Casey, chairman and CEO of Tronox, said: "The combination of Tronox and Alkali creates a leading inorganic chemicals company comprised of two fully integrated businesses with a competitive industry advantage.
The Lords Chloro Alkalies Plant, which has been non-functional since 2012, is expected to be reopened in 2014, which is expected to play a significant role in increasing volume production of chlor alkali chemicals in India.
The proposed standard will help alkali activated materials to gain acceptance in the marketplace by making it easier to ensure that consumers are provided With a quality product," Diaz-Loya affirms.
It has been suggested that the modern syndrome be called the calcium-alkali syndrome because it is due to ingestion of soluble calcium salts instead of milk, cream, and the other alkali sources listed above (3).
According to the companies, SiGNa's patent-pending alkali metal reagents allow scientists and researchers to "dramatically" improve efficiencies and results, "bypassing traditional dangerous steps in alkali metal reduction processes.
Plagioclase dramatically removes Sr at intermediate stages and alkali feldspars sequester Ba and Rb as late-stage trachytes and phonolites form in alkaline magmas.
Chip thickness is the critical dimension for alkali impregnation.
PMC Specialties is, in its own way, a unique operation, having reentered the alkali blue market in 2000 after a three-year hiatus at its Chicago facility.