Easily soluble in water, ammonia, glycerin, slightly soluble in ether
chemical property
Silver nitrate turns gray black when encountering organic matter, and silver is decomposed.Pure silver nitrate is stable to light, but its aqueous solutions and solids are often stored in brown reagent bottles due to the insufficient purity of general products.When heated to 444 ℃, silver nitrate decomposes into silver, nitrogen, oxygen and nitrogen dioxide.The water solution and ethanol solution react neutral to litmus, and the pH is about 6.Boiling point 444 ℃ (decomposition).It is oxidizing.In the presence of organic matter, the light turns gray or grayish black.Silver nitrate can precipitate or coordinate with a series of reagents.For example, it reacts with hydrogen sulfide to form blackSilver sulfideAgtwoS precipitation;AndPotassium chromateReaction, forming reddish brown silver chromate AgtwoCrOfourPrecipitation;React with disodium hydrogen phosphate to form yellow silver phosphate AgthreePOfourPrecipitation;Reacts with halogen ions to form silver halide AgX precipitation.It can also react with alkali to form brownish black silver oxide AgtwoO precipitation;Reaction with oxalate ion to form white silver oxalate AgtwoCtwoOfourSedimentation, etc.Silver nitrate energy and NHthree、CN-、SCN-And other reactions to form various coordination molecules.
Silver nitrate is a medium strong oxidant, which can be reduced to simple silver by many medium strong or strong reducing agents.For example, hydrazine NtwoHfourAnd phosphite can convert AgNOthreeReduction to metallic silver:
thirteen thousand five hundred and ninetyμG/kg (1 day before male mating), which has influence on testis, epididymis and vas deferens
The lowest subcutaneous toxic dose (TDLo) in mice
thirteen thousand five hundred and ninetyμG/kg (30 days before male mating), which has an impact on testes, epididymis and vas deferens
purpose
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Analytical chemistry is used to precipitate chloride ions, and the working standard silver nitrate is used to calibrate sodium chloride solution.Inorganic industry is used to manufacture other silver salts.The electronic industry is used to manufacture conductive adhesives, new gas purifying agents, A8x molecular sieves, silver plated pressure suits, gloves for live working, etc.The photosensitive industry is used to manufacture photosensitive materials such as film, X-ray photographic negative and photographic film.The electroplating industry is used for silver plating of electronic components and other handicrafts, as well as for silver plating of mirrors and thermos bottles.The battery industry is used to produce silver zinc batteries.It is used as a bactericide and corrosive agent in medicine.The daily chemical industry is used for dyeing hair, etc.It is used to determine chlorine, bromine, iodocyanide and thiocyanate in analytical chemistry.It is used for cyanide free silver plating, such as thiosulfuric acid silver plating, hydrochloric acid silver plating, ammonium sulfite silver plating, sulfosalicylic acid silver plating and other main salts, and is the source of silver ions.The content of silver nitrate has certain influence on the conductivity, dispersion and precipitation rate of silver plating solution.The general dosage is 25-50g/L.The ammonia solution of silver nitrate can be reduced by organic reductant aldehyde and sugar.Therefore, it is a reagent for the determination of aldehydes and sugars.It is also used to determine chloride ion, manganese catalyst, electroplating, photography and porcelain coloring.
First aid measures
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Contact part
First aid measures
Skin contact
Take off contaminated clothes and wash skin thoroughly with soapy water and clean water.
Eye contact
Lift the eyelids, wash them with flowing water or normal saline, and seek medical advice in time.
inhalation
Quickly leave the site to fresh air.Keep the respiratory tract unobstructed.If breathing is difficult, give oxygen.If breathing stops, perform artificial respiration immediately.Get medical attention.
Ingestion
Rinse mouth with water, drink milk or egg white, and seek medical advice in time.
Handling and storage
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Precautions for operation:;Close operation and strengthen ventilation.Operators must be specially trained and strictly abide by the operating procedures.It is recommended that the operator wear a hood type electric air supply filter type dust respirator, an adhesive tape gas suit, and neoprene gloves. Do not drop it on the skin.Keep away from kindling and heat sources, and smoking is strictly prohibited in the workplace.Keep away from flammable and combustible materials.Avoid dust generation.Avoid contact with reducing agents, alkalis and alcohols.Load and unload gently during transportation to prevent damage to packaging and containers.Fire fighting equipment and leakage emergency treatment equipment of corresponding types and quantities shall be provided.Empty containers may leave harmful substances.
Precautions for storage: store in a cool and ventilated warehouse;The laboratory should be stored in brown glass bottles.Keep away from kindling and heat sources.Avoid light.The storage temperature shall not exceed 30 ℃, and the relative humidity shall not exceed 80%.The package must be sealed to prevent moisture.It shall be stored separately from combustibles, reducing agents, alkalis, alcohols, and edible chemicals, and mixed storage is strictly prohibited.The storage area shall be equipped with appropriate materials to contain leakage.
security information
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Safety terminology
S26：In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
After eye contact, immediately flush with plenty of water and seek medical advice.
S45：In case of accident or if you feel unwell, seek medical advice immediately (show the lable where possible).
In case of an accident or feeling unwell, seek medical advice immediately (show the label if possible).
S60：This material and/or its container must be disposed of as hazardous waste.
The substance and its container must be disposed of as hazardous waste.
S61：Avoid release to the environment. Refer to special instructions/Safety data sheets.
To avoid release into the environment, refer to special instructions/safety receipt instructions.
Risk terminology
R34：Causes burns.
Causes burns.
R50/53：Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
