Silver nitrate

  • Nitric acid silver(1+) sal
Formula
AgNO3
Structure
Description
Colorless, transparent, large crystals or white small crystals, odorless becomes gray or grayish black on exposure to light in the presence of organic matter.
Uses
In photography, manufacture of mirrors, other silver salts, silver plating, in sympathetic and indelible inks, dyeing hair, coloring porcelain, etching ivory, as a very important and extensively used reagent in analytical chemistry.

Registry Numbers and Inventories.
CAS
7761-88-8
EC (EINECS/ELINCS)
231-853-9
EC Index Number
047-001-00-2
EC Class
Corrosive; Dangerous for the Environment
R 34 50/53
S 26 45 60 61
RTECS
VW4725000
RTECS class
Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT)
1493
Merck
12,8661
Beilstein/Gmelin
23909 (G)
RCRA
D011
EPA OPP
72503
Swiss Giftliste 1
G-2849
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
AgNO3
Formula mass
169.87
Melting point, °C
210
Vapor pressure, mmHg
0.002 (250 C)
Vapor density (air=1)
5.8
Odor Threshold Odor threshold Odorless
Density
4.35 g/cm3
Solubility in water
Soluble
Dielectric constant
9 (20 C)
Heat of fusion
11.5 kJ/mol

Hazards and Protection.
Storage
Keep away from sources of ignition. Do not store near combustible materials. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.
Handling
Wash thoroughly after handling. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Use with adequate ventilation. Do not store near combustible materials. Discard contaminated shoes.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Wear impervious gloves. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation. Do not use combustible materials such as paper towels to clean up spill.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong acids, strong bases, strong reducing agents, strong oxidizing agents.
Decomposition
Nitrogen oxides, irritating and toxic fumes and gases, oxides of silver.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with combustible materials may cause a fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Wear appropriate protective clothing to prevent contact with skin and eyes. Wear a self-contained breathing apparatus (SCBA) to prevent contact with thermal decomposition products. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.
Fire potential
Nonflammable.
Hazards
Increases flammability of combustibles.
Combustion products
Toxic oxides of nitrogen are produced in fires involving silver nitrate.
Health
3
 
Flammability
0
 
 
Reactivity
1
 
 
Special
O

Health.
Exposure limit(s)
TLV (as Ag): ppm; 0.01 mg/m3 (ACGIH 1997).
Poison_Class
3
Exposure effects
May cause methemoglobinemia, which is characterized by chocolate-brown colored blood, headache, weakness, dizziness, breath shortness, cyanosis, rapid heart rate, unconsciousness and possible death. Effects may be delayed. Chronic inhalation or ingestion may cause argyria characterized by blue-gray discoloration of the eyes, skin and mucous membrances. Chronic skin contact may cause permanent discoloration of the skin.
   Ingestion
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause perforation of the digestive tract. May cause systemic effects. Lethal dose for humans is 2
   Inhalation
Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects.
   Skin
Causes skin burns. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.
   Eyes
Causes eye burns. May cause chemical conjunctivitis and corneal damage.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
   Eyes
Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
1493
Response guide
Hazard class
5.1
Packing Group
II
 
USCG CHRIS Code
SVN
 
HS Code
2843 21 00
 
Std. Transport #
4918742