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Lead

Synonyms & Trade Names
Lead metal, Plumbum
CAS No.
7439-92-1
RTECS No.
OF7525000
DOT ID & Guide
Formula
Pb
Conversion
IDLH
100 mg/m3 (as Pb)
See: 7439921
Exposure Limits
NIOSH REL
TWA (8-hour) 0.050 mg/m3 See Appendix C [*Note: The REL also applies to other lead compounds (as Pb) -- see Appendix C.]
OSHA PEL
[1910.1025] TWA 0.050 mg/m3 See Appendix C [*Note: The PEL also applies to other lead compounds (as Pb) -- see Appendix C.]
Measurement Methods
NIOSH 7082 , 7105 , 7300 , 7301 , 7303 , 7700 , 7701 , 7702 , 9100 , 9102 , 9105;
OSHA ID206 , ID121 , ID125G
See: NMAM or OSHA Methods
Physical Description
A heavy, ductile, soft, gray solid.
Molecular Weight
207.2
Boiling Point
3164°F
Melting Point
621°F
Solubility
Insoluble
Vapor Pressure
0 mmHg (approx)
Ionization Potential
NA
Specific Gravity
11.34
Flash Point
NA
Upper Exposive Limit
NA
Lower Explosive Limit
NA
Noncombustible Solid in bulk form.
Incompatibilities & Reactivities
Strong oxidizers, hydrogen peroxide, acids
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
lassitude (weakness, exhaustion), insomnia; facial pallor; anorexia, weight loss, malnutrition; constipation, abdominal pain, colic; anemia; gingival lead line; tremor; paralysis wrist, ankles; encephalopathy; kidney disease; irritation eyes; hypertension
Target Organs
Eyes, gastrointestinal tract, central nervous system, kidneys, blood, gingival tissue
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:Daily
Remove:When wet or contaminated
Change:Daily
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap flush promptly
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

(See Appendix E)
NIOSH/OSHA

Up to 0.5 mg/m3:
(APF = 10) Any air-purifying respirator with an N100, R100, or P100 filter (including N100, R100, and P100 filtering facepieces) except quarter-mask respirators.
Click here for information on selection of N, R, or P filters.
(APF = 10) Any supplied-air respirator

Up to 1.25 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 2.5 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 supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and 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 50 mg/m3:
(APF = 1000) Any supplied-air respirator operated in a pressure-demand or other positive-pressure mode

Up to 100 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

See also
INTRODUCTION   ICSC CARD: 0052   MEDICAL TESTS: 0127

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