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Zirconium compounds (as Zr)																				Related Pages
Synonyms & Trade Names
			Zirconium
CAS No.
			7440-67-7 (Metal)
	RTECS No.
			ZH7070000 (Metal)
	DOT ID & Guide
			1358 170(powder, wet)1932 135(scrap)2008 135(powder, dry)

FormulaZr (Metal)
	Conversion
	IDLH
			25 mg/m3 (as Zr)See: 7440677

Exposure Limits
			NIOSH RELTWA 5 mg/m3 ST 10 mg/m3 [*Note: The REL applies to all zirconium compounds (as Zr) except Zirconium tetrachloride.]
					OSHA PEL TWA 5 mg/m3See Appendix G
	Measurement Methods
			**NIOSH** 7300 , 7301 , 9102;**OSHA** ID121
					
					See: NMAM or OSHA Methods
										
Physical Description
			Metal: Soft, malleable, ductile, solid or gray to gold, amorphous powder.													
										
Molecular Weight91.2	
	Boiling Point6471°F
	Melting Point3375°F
	SolubilityInsoluble
	Vapor Pressure0 mmHg (approx)
	Ionization PotentialNA											
Specific Gravity6.51 (Metal)	
	Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
Metal: Combustible, but solid form is difficult to ignite; however, powder form may ignite SPONTANEOUSLY and can continue burning under water.
Incompatibilities & Reactivities
			Potassium nitrate, oxidizers
					[Note: Fine powder may be stored completely immersed in water.]
Exposure Routes
			inhalation, skin and/or eye contact
Symptoms
			Skin, lung granulomas; In Animals: irritation skin, mucous membrane; X-ray evidence of retention in lungs
Target Organs
			Skin, respiratory system
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**Recommendations regarding personal protective clothing vary depending upon the specific compound.
							**Eyes:**Recommendations regarding eye protection vary depending upon the specific compound.
							**Wash skin:**Recommendations regarding washing the skin vary depending upon the specific compound.
							**Remove:**Recommendations regarding the removal of personal protective clothing that becomes wet or contaminated vary depending upon the specific compound.
							**Change:**Recommendations regarding the daily changing of personal protective clothing vary depending upon the specific compound.
							**Provide:**Recommendations regarding the need for eyewash or quick drench facilities vary depending upon the specific compound.
	First Aid
			(See procedures)**Eye:**Irrigate immediately
							**Skin:**Soap wash
							**Breathing:**Respiratory support
							**Swallow:**Medical attention immediately
Respirator Recommendations
			**NIOSH/OSHA****Up to 25 mg/m3**: (APF = 5) Any quarter-mask respirator. Click here for information on selection of N, R, or P filters.**Up to 50 mg/m3**: (APF = 10) Any particulate respirator equipped with an N95, R95, or P95 filter (including N95, R95, and P95 filtering facepieces) except quarter-mask respirators. The following filters may also be used: N99, R99, P99, N100, R100, P100. Click here for information on selection of N, R, or P filters.(APF = 25) Any powered, air-purifying respirator with a high-efficiency particulate filter./(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 = 10) Any supplied-air respirator(APF = 50) Any self-contained breathing apparatus with a full facepiece**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: 1405
					  MEDICAL TESTS: 0247

			
							

			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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