# NIOSH Pocket Guide to Chemical Hazards
Silver (metal dust and soluble compounds, as Ag) | CAS 7440-22-4 (metal)
Ag (metal) | RTECS VW3500000 (metal)
Synonyms & Trade Names Silver metal: Argentum Synonyms of soluble silver compounds such as Silver nitrate (AgNO3) vary depending upon the specific compound. | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 0.01 mg/m3
OSHA PEL: TWA 0.01 mg/m3
IDLH 10 mg/m3 (as Ag) | Conversion
Physical Description Metal: White, lustrous solid.
MW: 107.9 | BP: 3632°F | MLT: 1761°F | Sol: Insoluble
VP: 0 mmHg (approx) | IP: NA |  | Sp.Gr: 10.49 (metal)
Fl.P: NA | UEL: NA | LEL: NA |
Metal: Noncombustible Solid, but flammable in form of dust or powder.
Incompatibilities & Reactivities Acetylene, ammonia, hydrogen peroxide, bromoazide, chlorine trifluoride, ethyleneimine, oxalic acid, tartaric acid
Measurement Methods NIOSH 7300; OSHA ID121
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated (AgNO3) Change: Daily Provide: Eyewash | First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 0.25 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£/(APF = 25) Any powered, air-purifying respirator with a high-efficiency particulate filter£ Up to 0.5 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Up to 10 mg/m3: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Blue-gray eyes, nasal septum, throat, skin; irritation, ulceration skin; gastrointestinal disturbance
Target Organs Nasal septum, skin, eyes
See also: INTRODUCTION