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Lead																				Related Pages
Synonyms & Trade Names
			Lead metal, Plumbum
CAS No.
			7439-92-1
	RTECS No.
			OF7525000
	DOT ID & Guide

FormulaPb
	Conversion
	IDLH
			100 mg/m3 (as Pb)See: 7439921

Exposure Limits
			NIOSH RELTWA (8-hour) 0.050 mg/m3See Appendix C [*Note: The REL also applies to other lead compounds (as Pb) -- see Appendix C.]
					OSHA PEL [1910.1025] TWA 0.050 mg/m3See 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 Weight207.2	
	Boiling Point3164°F
	Melting Point621°F
	SolubilityInsoluble
	Vapor Pressure0 mmHg (approx)
	Ionization PotentialNA											
Specific Gravity11.34	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
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

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
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