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Ozone																				Related Pages
Synonyms & Trade Names
			Triatomic oxygen
CAS No.
			10028-15-6
	RTECS No.
			RS8225000
	DOT ID & Guide

FormulaO3
	Conversion
			1 ppm = 1.96 mg/m3
	IDLH
			5 ppmSee: 10028156

Exposure Limits
			NIOSH RELC 0.1 ppm (0.2 mg/m3)
					OSHA PEL TWA 0.1 ppm (0.2 mg/m3) See Appendix G
	Measurement Methods
			**OSHA** ID214
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless to blue gas with a very pungent odor.													
										
Molecular Weight48.0	
	Boiling Point-169°F
	Freezing Point-315°F
	Solubility(32°F): 0.001%
	Vapor Pressure>1 atm
	Ionization Potential12.52 eV											
Flash PointNA
	Upper Explosive LimitNA
	Lower Explosive LimitNA
	Relative Gas Density1.66
Nonflammable Gas, but a powerful oxidizer.
Incompatibilities & Reactivities
			All oxidizable materials (both organic & inorganic)
Exposure Routes
			inhalation, skin and/or eye contact
Symptoms
			irritation eyes, mucous membrane; pulmonary edema; chronic resp disease
Target Organs
			Eyes, respiratory system
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**No recommendation
							**Eyes:**No recommendation
							**Wash skin:**No recommendation
							**Remove:**No recommendation
							**Change:**No recommendation
	First Aid
			(See procedures)**Eye:**Medical attention
							**Breathing:**Fresh air; 100% O2
Respirator Recommendations
			**NIOSH/OSHA****Up to 1 ppm**: (APF = 10) Any chemical cartridge respirator with cartridge(s) providing protection against the compound of concern¿(APF = 10) Any supplied-air respirator**Up to 2.5 ppm**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern¿**Up to 5 ppm**: (APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) providing protection against the compound of concern¿(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern¿(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode(APF = 50) Any self-contained breathing apparatus with a full facepiece(APF = 50) Any supplied-air respirator 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 (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern¿Any appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0068
					  MEDICAL TESTS: 0172

			
							

			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
First Aid Procedures Follow NIOSH Facebook
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