also called Base – A class of compounds which will react with an acid to give a salt. A substance that creates a bitter taste and a slippery feel when dissolved in water. An alkali has a pH greater than 7.0 and is the opposite of an acid. Alkalis may include the soluble hydroxide, carbonate and bicarbonate salts of calcium, magnesium, potassium, and sodium. A reaction between an acid and a base is called a neutralization.

a liquid with a pH higher than 7. Alkalis are used in depilatory creams that dissolve hair, and galvanic electrolysis produces alkalis which can destroy a hair follicle

Substances, when placed in water, cause the pH value to rise above 7. They have the ability to neutralize acids.

synonym for base.

An electropositive substance; capable of making soaps from fats; used to neutralize acids.

Opposite of acid, a caustic solution

For purposes of evaluating ASR potential, term commonly refers to sodium and potassium occurring in constituents of concrete and mortar. Usually expressed in chemical analysis as the oxides Na2O and K20. Actually these are indirect measurement of free hydroxyl ion which is associated with sodium and potassium.

a basic substance. Caustic alkalis were usually hydroxides, while mild alkalis were carbonates. (See alkaline air, fossil alkali, marine alkali, mineral alkali, vegetable alkali, volatile alkali.)

A substance which accepts H+ (proton) from other substances. An alkali reacts with water to produce OH- in solution.

Water-soluble mineral compound, usually a moderate strength base (as opposed to caustic hydroxide), such as a bicarbonate and carbonate compound when it is present in the water.

A term that applies to the type of compounds which have basic properties and which will neutralise acids. Some alkaline materials are hydroxides, carbonates, caustics etc.

A chemical substance with pH greater than 7 that reacts with and neutralizes an acid. Also called alkaline or base.

a substance which contains hydroxide ions in solution. Alkaline solutions have a pH greater than 7 and turn litmus paper blue.

Family of products derived from alkali metals, including compounds such as sodium carbonate and caustic soda. Solvay′s Alkalis Sector covers derivatives from soda production and electrolysis, and a range of other inorganic products.

Any strongly basic substance of hydroxide and carbonate, such as soda, potash, etc., that is soluble in water and increases the pH of a solution.

Whatever soluble substance that can neutralize acids. It has a pH of more than 7.0.

A base which is soluble in water. They are usually metal hydroxides eg. sodium hydroxide, but ammonia solution is also an alkali.

a substance with a pH above 7.  Developers are usually alkaline solutions.

the opposite of acid in chemistry

Historically, a compound that neutralizes acids. Now known as a base.

A base soluble in water. A base is a class of chemical compounds which combine with acids to form salts. An alkali is neutralised by acids, and an acid is neutralised by alkalis.

Any compound having highly basic properties; i.e., one that readily ionizes in aqueous solution to yield OH anions, with a pH above 7.0, and turns litmus paper blue. Common commercial alkalis are sodium carbonate (soda ash), caustic soda and caustic potash, lime, lye, waterglass, regular mortar, portland cement, and bicarbonate of soda.

A base substance. A substance whose pH is higher than 7.

The chemical opposite of acid. Heavy concentrates of alkaline salts in soil may damage crops.

Used in reference to materials that are rich in sodium and/or potassium.

A chemical "base" (loosely, the opposite of an acid). Certain types of alkalis (especially potassium hydroxide) have been used as fuel cell electrolytes.

A basic solution that neutralizes acids by releasing carbonates and/or hydroxides.

any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water; "bases include oxides and hydroxides of metals and ammonia"

a mixture of soluble salts found in arid soils and some bodies of water; detrimental to agriculture

a base that will dissolve in water

a base which is readily soluble in water

a soluble base and forms hydroxyl ions (OH - ) when placed in water

a special example of a base, where in an aqueous environment, hydroxide ions are donated

a specific type of base that dissolves in water to produce the basic OH - ions

a substance that can neutralize an acid

a substance that dissolves in water, producing a solution poor in hydrogen ions

a substance that, when dissolved in water, yields a net of hydroxide ( OH- ) ions

A chemical that dissolves in water and neutralises (i.e. cancels out the effects of) an acid. Alkalis include caustic soda (Sodium hydroxide) and sodium hydrogen carbonate (baking powder).

Any chemical with a high pH that in water solution is irritating or caustic to the skin. Strong alkalies in solution are corrosive to the skin and mucous membranes. Example: sodium hydroxide, referred to as caustic soda or lye. Alkalis turn litmus paper blue and have pH values from 8 to 14. Another term for alkali is base.

This is a liquid that has a pH higher than 7. It can react with acids. Examples include caustic soda and ammonia. Alkalis will react with oils and fats to form soap.

Substance having the ability to neutralize an acid.

an acid-neutralizing substance (sodium bicarbonate is an alkali used for excess acidity in foods).

Any substance with a pH higher than 7.

a soluble salt that is one of the essential ingredients in making glass, serving as a flux to reduce the fusion point of the silica; alkali is supplied in borax, soda or potash.

A caustic compound with highly basic properties that: Readily ionizes in aqueous solution to yield OH anions; has a pH 7.0. (Note: high concentrations of OH anions in solution destroys tissue by removing fluids or by corrosive deoxidation).

a classification of substances that liberate hydroxide ions in water, to form caustic and corrosive solutions which turn litmus paper blue, with a pH higher than 7, for example sodium Hydroxide. A compound that reacts with or neutralizes hydrogen ions.

1) any strong base or hydroxide that is soluble in water, neutralizes acids and forms salts with them, and turns red litmus blue. Alkalis are generally bitter tasting in water solution and have a pH value of more than 7. Lye and ammonia are two common alkalis. 2) Any salt or mixture of salts that neutralizes acids, found in some desert soils.

A water soluble hydroxide on one of the alkali metals. The term is virually synonymous with the term base. An example is Sodium Hydroxide, NaOH.

A substance used in some wax strippers, degreasers and cleaners to assist in soil and finish removal. Sodium and potassium hydroxides are examples of alkalis used for this purpose. The hydroxides can leave a white powdery residue that requires multiple rinsing. These non-volatile alkalis are being replaced by monoethanolamine (MEA) in wax strippers.

Same as Base. A substance which dissolves in water and releases a hydroxyl ion (OH-); it has the ability to neutralize an acid and form a salt. Strong alkalis are irritating and may damage tissue (see Caustic).

a solution whose pH is more than 7.

A chemical (lye, soda, lime, etc.) that will neutralize an acid. Oil-based paint films can be destroyed by alkalies.

Stimulates alkali acid and checks alkaline secretions

Caustic, inorganic substances that share the characteristic of being strongly basic (high pH)(examples are Sodium Hydroxide or Caustic Soda).

A term normally used to refer to hydroxides and carbonates of the metals of Group IA of the Periodic Table, as well as to ammonium hydroxide.

alk-al-lie Substance that turns litmus blue. Has a pH of more than 7

Base compounds of sodium and potassium, especially sodium carbonate and potassium carbonate

a substance that has a bitter taste and neutralizes acids.

An ingredient that neutralizes or adjusts acidity of other ingredients; makes surfactants and builders more efficient; and increases alkalinity, which is useful in removing acidic, fatty and oily soils. Detergents are more effective when they are alkaline.

An alkali is a substance with a pH greater than 7. Sodium hydroxide is an example of an alkali, or base used to neutralize an acid to make soap.

In glassmaking, a soluble salt consisting mainly of potassium carbonate or sodium carbonate. It is one of the essential ingredients of glass, generally accounting for about 15-20 percent of the batch. The alkali is a flux, which reduces the melting point of the major constituent of glass, silica.

Chemical agent, capable of neutralizing acids. Usually caustic. A pH of 7 is neutral and the scale goes up to 14 indicating alkali.

An alkali is a chemical substance that neutralizes an acid, producing heat and water as a result.

(chemical related) Also called base - A Class of compounds which will react with an acid to give a salt. Alkali is the opposite of acid.

A chemical substance which effectively neutralizes acid material so as to form neutral salts. A base. The opposite of acid. Examples, ammonia and caustic soda.

Chemical agent, generally soluble in water, capable of neutralizing acids. Usually caustics; pH of 7 is neutral, up to 14 indicates degree of alkalinity base.

A soluble salt obtained from the ashes of plants and consisting largely of potassium or sodium carbonate.

Caustic chemicals terminology.

An alkaline, or "basic," chemical substance such as lime or caustic. Generally present in fresh cement, concrete, plaster or certain household cleaning products.

A soluble mineral salt.

A molecular substance that can combine with a proton to produce a new compound such as a soap.

An aqueous liquid which has a pH value of between 7 and 14. A base or caustic material.

a) Chem. A carbonate or hydroxide of an alkali metal, whose aqueous solution is bitter, slippery, caustic, and typically basic in reactions. b) Any of various soluble mineral salts in natural water and arid soils. c) An alkali metal.

A base that is soluble in water.

Chemicals which react with acids to produce a salt. Also called base, its the opposite of acid.

A compound that has the ability to neutralize an acid to form a salt. A substance which is somewhat irritating or corrosive to the skin, eyes and mucous membranes. Turns red litmus paper to blue. Common strong alkalis are sodium and potassium hydroxide

Opposite of acids. A material which gives a solution a pH above pH 7. When the right amount of an alkali and acid are mixed, they neutralize each other resulting in a pH of 7 and the formation of a salt in the solution. Strong alkalies are caustic soda, caustic potash and ammonia (first cousin of amines}. Salts which are somewhat alkaline include phosphates, borax, soda ash, silicates, etc., which have pH's ranging from about pH 8 to pH 12.

Any of certain soluble salts, principally of sodium, potassium, magnesium, and calcium, which have the property of combining with acids from neutral salts and may be used in chemical water treatment processes.

Alkali is a chemical that will neutralize an acid. Oil-based (alkyd) paints can be destroyed by alkalis. Examples of alkalis include lye, soda and lime.

A hydroxide-containing corrosive material that is soluble in water, neutralizes acids and is irritating or destructive to tissue.

A soluble hydroxide of a metal substance which can be used to neutralizes acids

a chemical substance. An alkali has a pH above 7 and turns litmus paper blue. It is soluble in water, neutralizes acids and forms salts with them

A substance that is soluble in water which neutralizes acid. Common examples are ammonia, lye and baking soda.

A base that dissolves in water to give hydroxide ions OH

a substance with a pH higher than 7; can be used to neutralize an acid to make soap

n. Anything that will neutralize an acid, as lime, magnesia, etc.

Any chemical substance that forms soluble soaps with fatty acids. Alkalis are also referred to as bases. They may cause severe burns to the skin. Alkalis turn litmus paper blue and have pH values from 8 to 14.

A chemical base (the opposite of an acid), can be used as fuel cell electrolytes

A chemical substance with pH greater that 7 that reacts with and neutralizes and acid. Also called alkaline or base.

Any substance having basic (as opposed to acidic) properties. In a restricted sense it is applied to the hydroxides of ammonium, lithium, potassium and sodium. Alkaline materials in lubricating oils neutralize acids to prevent acidic and corrosive wear in internal combustion engines.

An alkaline, or "basic," chemical substance such as lime or lye. Generally present in fresh cement, concrete, or plaster. Alkali Burn: A condition that occurs when the alkalinity in fresh masonry causes the breakdown of a paint's binder, resulting in color loss and overall deterioration of the paint film. Most likely to occur with vinyl-acrylic latex and oil-based paints applied to masonry surfaces that are less than a year old. lkyd: A synthetic resin used in oil-based paints. Reacting a drying oil with a hard, synthetic material makes an alkyd resin.

Any substance which when dissolved in water, yields pH above 7.

In chemistry, a substance capable of forming hydroxyl (OH-) ions when dissolved in water. Alkaline materials may be added to materials to neutralise acids or as an alkaline reserve or buffer for the purpose of counteracting acids which may form in the future. While a number of chemicals may be used as alkaline buffers, the most common used in paper conservation are magnesium carbonate or calcium carbonate. Alkalis can be neutralised by an acid to form a salt.

Any substance with a pH higher that 7. Lye is a strong alkali.

A chemical substance (such as hydroxide or carbonate of sodium or potassium) which reacts and neutralizes an acid.

A substance that neutralizes acids, such as lye, soda, lime, etc. Alkalis or strong alkaline solutions are highly destructive to paint films, in particular alkyds. Commonly found in uncured concrete, plaster etc.

A substance capable of forming hydroxyl ions (OH-) when dissolved in water. An aqueous alkaline solution is one with a pH value greater than 7.0. Alkalis neutralise acids producing a salt and water.

Mineral salt found in soil.

A soluble hydroxide of a metal which can neutralize an acid to form a salt.

See Base.

An alkali is a chemical substance that has a pH above 7 (also called "base"). The higher the pH of an alkali, the stronger the chemical is (or more "caustic"). Alkalis are often called detergent builders and are the major active ingredient in most detergents, especially powdered products. The level of alkalinity in a detergent solution is often considered the true measure of a detergent's strength.

Any substance that neutralizes acids. Alkalis are helpful in aqueous cleaning by speeding soil removal and suspension. Alkali is synonymous with caustic.

Any of various water-soluble mineral salts; a quality of detergent soaps.

A compound that has the ability to neutralize an acid and form a salt. Example: sodium hydroxide, referred to as caustic soda or lye. Used in soap manufacture and many other applications. Turns litmus paper blue.

Also called a Base. An alkali is the opposite of acid and is used to increase the pH or total alkalinity of swimming pool water. Most common are sodium carbonate or sodium hydroxide to increase pH, and sodium bicarbonate to increase total alkalinity.

A compound which has the ability to neutralize acid and form a salt. Like bases, alkalis turn litmus paper blue.

A substance such as lye, soda, or lime that can be highly destructive to paint films.

a substance having marked basic properties (i.e. substance with properties of a base).

A chemical which neutralizes acids forming salts. Alkalis have high pH's. Alkalis are corrosive.

Any substance which when dissolved in water, yields pH above7.

A substance which creates a bitter taste and a slippery feel when dissolved in water and will turn litmus paper blue. An alkali has a pH greater than seven and is the opposite of an acid. Highly alkaline waters tend to cause drying of the skin.

ineral salt found in soil.

Another name for base or antacid, the opposite of acidic.

acid neutralizing substance. A soluble salt with base properties..

In chemistry, an alkali (from Arabic: al-qalyالقلوي, القالي ) is a basic, ionic salt of an alkali metal or alkali earth metal element. Alkalis are best known for being bases (compounds with p H greater than 7) that dissolve in water. The adjective alkaline is commonly used in English as a synonym for basic, especially for soluble bases.