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Capable of being neutralized by a univalent base or basic radical; having but one acid hydrogen atom to be replaced; -- said of acids; as, acetic, nitric, and hydrochloric acids are monobasic.

another, -- a hypothetical condition implying peculiarly active chemical properties; as, hydrogen in the nascent state is a strong reducer.

izontal plane. -- Neutral salt (Chem.), a salt formed by the complete replacement of the hydrogen in an acid or base; in the former case by a positive or basic, in the latter by a negative or acid, element or radical. -- Neutral tint, a bluish gray pigment, used in water colors, made by mixing indigo or other blue so…

pecially with respect to gases; as iron, platinum, and palladium occlude large volumes of hydrogen.

charcoal; thus, palladium absorbs, or occludes, nearly a thousand times its own volume of hydrogen, and in this case a chemical compound seems to be formed.

of eight; capable of being combined with, exchanged for, or compared with, eight atoms of hydrogen; -- said of certain atoms or radicals.

A name given to any one of the four elements, carbon, hydrogen, oxygen, and nitrogen, which are especially characteristic ingredients of organic compounds; also, by extension, to other elements sometimes found in the same connection; as sulphur, phosphorus, etc.

To remove hydrogen from (anything), as by the action of oxygen; as, to oxidize alcohol so as to form aldehyde.

or cause to combine, with oxygen; to treat with oxygen; to oxidize; as, oxygenated water (hydrogen dioxide).

ntarnished in the air, but is more easily fusible. It is unique in its power of occluding hydrogen, which it does to the extent of nearly a thousand volumes, forming the alloy Pd2H. It is used for graduated circles and verniers, for plating certain silver goods, and somewhat in dentistry. It was so named in 1804 by Wol…

Capable of uniting with five molecules of a monacid base; having five acid hydrogen atoms capable of substitution by a basic radical; -- said of certain acids.

pable of neutralizing, or combining with, five molecules of a monobasic acid; having five hydrogen atoms capable of substitution by acid residues; -- said of certain complex bases.

of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds.

Pertaining to, or designating, an acid of sulphur obtained by leading hydrogen sulphide into a solution of sulphur dioxide; -- so called because it contains five atoms of sulphur.

Having five hydrogen atoms capable of substitution.

ized compounds of chromium, which has a deep blue color, and is produced by the action of hydrogen peroxide.

pression. Eternity stands permanent and fixed. Dryden. Permanent gases (Chem. & Physics), hydrogen, oxygen, nitrogen, and carbon monoxide; -- also called incondensible or incoercible gases, before their liquefaction in 1877. -- Permanent way, the roadbed and superstructure of a finished railway; -- so called in distin…

class of organic bases regarded as formed from ammonia by the substitution of phenyl for hydrogen.

alogous to ammonia, and having a disagreeable odor resembling that of garlic. Called also hydrogen phosphide, and formerly, phosphureted hydrogen.

ated, or combined, with phosphorus. [Obsoles.] [Written also phosphuretted.] Phosphureted hydrogen. (Chem.) See Phosphine.