NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

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) See: IDLH INDEX
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, 7301, 9102; OSHA ID121
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
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 an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.
(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 an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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   See ICSC CARD: 0810   See MEDICAL TESTS: 0208