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单词 silver nitrate
释义

silver nitrate


silver nitrate

n. A poisonous colorless crystalline compound, AgNO3, that becomes grayish black when exposed to light in the presence of organic matter and is used in manufacturing photographic film, silvering mirrors, dyeing hair, plating silver, and in medicine as a cautery and antiseptic.

silver nitrate

n (Elements & Compounds) a white crystalline soluble poisonous substance used in making photographic emulsions, other silver salts, and as a medical antiseptic and astringent. Formula: AgNO3. See also lunar caustic

sil′ver ni′trate



n. a corrosive, poisonous powder, AgNO3, used in making photographic emulsions and mirrors, as a laboratory reagent, and as an antiseptic and astringent. [1880–85]

silver nitrate

A poisonous, clear, crystalline compound, AgNO3, that darkens when exposed to light. It is used in photography and silver plating, and as an external antiseptic.
Thesaurus
Noun1.silver nitrate - a nitrate used in making photographic emulsions; also used in medicine as a cautery and as a topical antibacterial agentphotographic emulsion, emulsion - a light-sensitive coating on paper or film; consists of fine grains of silver bromide suspended in a gelatinlunar caustic - silver nitrate fused into sticks and formerly used as a causticcaustic - any chemical substance that burns or destroys living tissuenitrate - any compound containing the nitrate group (such as a salt or ester of nitric acid)
Translations
nitrato d'argento

silver nitrate


silver nitrate

(nī`trāt), chemical compound, AgNO3, a colorless crystalline material that is very soluble in water. The most important compound of silver, it is used in the preparation of silver salts for photographyphotography, still,
science and art of making permanent images on light-sensitive materials.

See also photographic processing; motion picture photography; motion pictures.
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, in chemical analysis, in silver plating, in inks and hair dyes, and to silver mirrors. It is used in medicine in the treatment of eye infections and gonorrhea. Fused silver nitrate is also called lunar caustic. Taken internally silver nitrate is a poison. It is prepared by reaction of nitric acid with silver, and purified by recrystallization. It is darkened by sunlight or contact with organic matter such as the skin.

Silver Nitrate

 

AgNO3, a compound occurring as colorless crystals with two modifications: orthorhombic and rhom-bohedral (stable above 157°C). Silver nitrate has a density of 4.352 g/cm3 (19°C) and a melting point of 209.6°C. Its solubility in water is 69.5 percent by weight (20°C). Silver nitrate forms solid solutions with nitrates of alkali and alkaline-earth metals. When heated to 350°C, silver nitrate decomposes to yield metallic silver; the latter is also formed upon the action of reducing agents (hydrogen, sulfides) on AgNO3. Silver nitrate is obtained by the action of HNO3 on silver in the presence of HNO2 traces.

Silver nitrate is used in the preparation of all other silver compounds. It is also used in the photographic industry, in glassmaking, and in the production of dyes for the textile industry. In organic and analytical chemistry, silver nitrate serves as a catalyst and oxidizing agent. In medicine it is used as an astringent, cauterant, and bactericide. [23–876–]

silver nitrate

[′sil·vər ′nī‚trāt] (inorganic chemistry) AgNO3 Poisonous, corrosive, colorless crystals; soluble in glycerol, water, and hot alcohol; melts at 212°C; used in external medicine, photography, hair dyeing, silver plating, ink manufacture, and mirror silvering, and as a chemical reagent.

silver nitrate


silver

 [sil´ver] a chemical element, atomic number 47, atomic weight 107.870, symbol Ag. (See Appendix 6.) It is used in medicine for its caustic, astringent, and antiseptic effects. It is also used in dentistry in alloys, in soldering, and as cones to obliterate the root canal.silver nitrate colorless or white crystals, used as a caustic and local antiinfective; an important use is in prevention of ophthalmia neonatorum.silver protein silver made colloidal by the presence of, or combination with, protein; an active germicide with a local irritant and astringent effect.silver sulfadiazine the silver derivative of sulfadiazine, having bactericidal activity against many gram-positive and gram-negative organisms, as well as being effective against yeasts; used as a topical antiinfective for the prevention and treatment of wound sepsis in patients with second and third degree burns.toughened silver nitrate a mixture of silver nitrate with hydrochloric acid, sodium chloride, or potassium nitrate, occurring as white crystalline masses molded into pencils or cones; a convenient means of applying silver nitrate locally.

sil·'ver ni·trate

an antiseptic and astringent; formerly used externally, in solution, in the prevention of ophthalmia neonatorum; also used in the special staining of the nervous system, spirochetes, reticular fibers, Golgi apparatus, nucleolar organizer region, and calcium.

silver nitrate

n. A poisonous colorless crystalline compound, AgNO3, that becomes grayish black when exposed to light in the presence of organic matter and is used in manufacturing photographic film, silvering mirrors, dyeing hair, plating silver, and in medicine as a cautery and antiseptic.

silver nitrate

An astringent drug formerly used in solution to treat various conditions such as CONJUNCTIVITIS, OTITIS EXTERNA and cervical erosion. It causes black staining and is now seldom used in the Western world. The drug is on the WHO official list.

sil·ver ni·trate

(silvĕr nītrāt) Antiseptic and astringent.
FinancialSeeSilver

silver nitrate


  • noun

Words related to silver nitrate

noun a nitrate used in making photographic emulsions

Related Words

  • photographic emulsion
  • emulsion
  • lunar caustic
  • caustic
  • nitrate
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