Silver nitrate

From Academic Kids

</table> Silver nitrate is a chemical compound with chemical formulaAgNO3. This nitrate of silver is a light-sensitive ingredient in photographic film and is a poisonous, corrosive compound. Silver nitrate crystals can be produced by dissolving silver in nitric acid and evaporating the solution. The compound notably stains skin a greyish or black color which is made visible after exposure to sunlight. When making photographic film, fine silver nitrate particles are bonded to strips of tri-acetate or polyester. Photons from sunlight, X-rays or other sources, initiate a purported chemical chain reaction: when photons strike silver nitrate molecules, they free electrons from the silver ions. These free electrons roam through the crystal and settle in structural imperfections called sensitivity specks. These specks apparently attract positive silver ions, which are then neutralized to form groups of stable silver atoms, creating a latent image that is chemically developed to reveal a photographic image. Silver nitrate has been used as an antiseptic, dropped into newborn babies' eyes at birth. This is to prevent contraction of gonorrhoea or chlamydia from their mother. A very weak solution is used for this, (about 1%) and there are very few side effects. Fused silver nitrate, shaped into sticks, was traditionally called lunar caustic and used as a cauterizing agent.

See also

External links

de:Silbernitrat es:Nitrato de plata nl:Zilvernitraat ja:硝酸銀 pl:Azotan srebra

sl:Srebrov nitrat

Properties

General

Name Silver (I) nitrate
Chemical formula AgNO3
Appearance White solid

Physical

Formula weight 169.9 amu
Melting point 485 K (212 °C)
Boiling point decomposes at 713 K (440 °C)
Density 4.4 ×103 kg/m3
Crystal structure ?
Solubility 245 g in 100g water

Thermochemistry

Safety

Ingestion Very toxic, may cause serious injury or death.
Inhalation Severe irritant, long-term effects also known.
Skin Staining, higher concentrations are corrosive and dangerous.
Eyes Extremely dangerous, causes blindness. Seek medical attention immediately.
More info Hazardous Chemical Database (http://ull.chemistry.uakron.edu/erd/chemicals1/8/7034.html)

SI units were used where possible. Unless otherwise stated, standard conditions were used.

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