Safety Information

SECTION 1: PRODUCT IDENTIFICATION: OZONE

ParametersInformation
ProductOzone
Chemical formulaO₃
SynonymsTriatomic oxygen
Chemical familyGaseous oxidizer
N° CAS10028-15-6
NIOSHRTECS RS8225000
ManufacturerGlacier Ozone

SECTION 2: COMPOSITION AND PHYSICAL DATA

Molecular propertiesValueUnit
Molecular weight48,0g/mole
Specific gravity2,144g/L
Relative gas density1,66-
Ionization potential12,52eV
Thermal propertiesValueUnit
Melting point-192,5°C
Boiling point-111,9°C
Vapour pressure>1atm
Physical propertiesDescription
Water solubility0,001% (0°C)
Appearance and odourColourless to bluish gas with a strong, pungent odour. Ozone is heavier than air.

SECTION 3: HEALTH HAZARD INFORMATION

Exposure limit valuesOrganizationValueDuration
VLE/MPTOSHA/REL NIOSH0,1 ppm (0,2 mg/m³)8 h/day, 40 h/week
CNESST(QUEBEC/CANADA)maximum value 0.1 ppm (0.2 mg/m³)
VECDOSHA/NIOSH0,3 ppm (0,6 mg/m³)15 min
DIVSOSHA/NIOSH5 ppm (10 mg/m³)-
CharacteristicInformation
Olfactory threshold0,01 to 0,04 ppm
Warning propertiesAdequate

SECTION 4: FIRST AID MEASURES

InhalationDescription
Emergency procedureMove the person to a well-ventilated area with fresh air. If breathing is difficult, a qualified person should administer oxygen. If symptoms persist, seek medical attention immediately.

SECTION 5: FIRE AND EXPLOSION HAZARD DATA

Combustibility propertiesValeur
ExplosivenessOzone is generated from air at concentrations of 1–2% by weight. At these concentrations, ozone is not explosive.
Flash pointN/D
Auto-ignition temperatureN/D
Flammability limits in airN/D

SECTION 6: ACCIDENTAL RELEASE MEASURES

Emergency proceduresDescription
Immediate measuresPlease evacuate the area, and open doors and windows to let the room ventilate naturally. Ozone breaks down within a few minutes to a few hours, but the time varies based on its concentration and the ventilation conditions. To speed up the dissipation of ozone, mechanical ventilation is highly recommended.

SECTION 7: REACTIVITY DATA

Stability and reactivityInformation
StabilityUnstable. Slowly decomposes into oxygen from which it was formed.
Conditions to avoidAvoid concentrating ozone to levels (>20%) where its reactivity and decomposition rate accelerate.
IncompatibilityOzone is chemically reactive with all oxidizable materials, both organic and inorganic. In the presence of certain atmospheric pollutants (e.g., VOCs), ozone can generate secondary byproducts such as aldehydes or ketones.

SECTION 8: PROTECTION AND PRECAUTIONS

Required ventilation typeRecommandation
General ventilationGeneral ventilation is strongly recommended. Ensure an adequate supply of fresh air and avoid working in areas where ozone is produced, unless the ozone concentration is below the occupational exposure limit (OEL) or time-weighted average (TWA). Mechanical ventilation is necessary for enclosed spaces.
Respiratory protectionSpecification
RespiratorWearing a respirator may be required when source control measures are not technically feasible.

The use of a respirator that complies with NIOSH or CSA standards may be necessary when concentrations exceed the ceiling value set by the CNESST (0.1 ppm).

Use an approved respirator that complies with current safety standards (e.g., NIOSH, CNESST, or CSA) and is appropriate for the type and level of exposure.

Standard filtering masks (e.g., N95) do not protect against ozone. Only an approved respirator (CSA/NIOSH) is effective.