Silver

  • Argentium
Formula
Ag
Structure
Description
Metal, white, lustrous solid.
Uses
Manufacture ornaments, for electroplating, ingredient in dental alloys, for making vessels & apparatus used in manufacture medicinal chem, in processing foods & beverages, in handling organic acids, as catalyst in hydrogenation & oxidn processes.

Registry Numbers and Inventories.
CAS
7440-22-4
EC (EINECS/ELINCS)
231-131-3
RTECS
VW3500000
RTECS class
Tumorigen
Merck
12,8647
Beilstein/Gmelin
1253 (G)
RCRA
D011
Swiss Giftliste 1
G-6706
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
Ag
Formula mass
107.87
Melting point, °C
962
Boiling point, °C
2212
Vapor pressure, mmHg
1
Density
10.50 g/cm3 (20 C)
Solubility in water
Insoluble

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. No special precautions indicated.
Handling
Wash thoroughly after handling. Wash hands before eating. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation.
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. 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. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong acids, strong bases, ethyleneimine.
Decomposition
Irritating and toxic fumes and gases, silver fumes.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Moderate as dust exposed to flame, or by chemical reaction with oxidizers.
Hazards
Dust is flammable.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV (metal): 0.1 mg/m3 (ACGIH 1997). MAK: 0.1 mg/m3; (1996) OSHA PEL: TWA 0.01 mg/m3 NIOSH REL: TWA 0.01 mg/m3 NIOSH IDLH: 10 mg/m3 (as Ag)
Poison_Class
-
Exposure effects
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 irritation of the digestive tract. Effects may be cumulative. Ingestion of silver compounds may cause abdominal pain, rigidity, convulsions and shock.
   Inhalation
May cause respiratory tract irritation. Inhalation of fumes may cause metal fume fever, which is characterized by flu-like symptoms with metallic taste, fever, chills, cough, weakness, chest pain, muscle pain and increased white blood cell count.
   Skin
May cause skin irritation. May cause skin discoloration.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Wash mouth out with water. Get medical aid if irritation or symptoms occur.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.

Transport.
USCG CHRIS Code
AGX
 
HS Code
7106 91 10