CCOHS: Toluene - Canadian Centre for Occupational Health and Safety What are the stability and reactivity hazards of toluene? What are unintentional release measures for toluene? What handling and storage practices should be used when working with toluene? What is the American Conference of Governmental Industrial Hygienists (ACGIH®) recommended exposure limit for toluene?
CCOHS: Occupational Hygiene - Occupational Exposure Limits For example, the modified TLV-TWA for toluene (TLV-TWA = 20 ppm) for a 12-hr day 14-day pattern shift (five workdays one week and two workdays the next week) will be: (The reduction factor is calculated for the 12-hour workday regardless of how many days, 5 or 2, are worked during a week)
Converting Occupational Exposure Limits from mg m³ to ppm To convert mg m 3 to ppm at other temperatures and pressures, one must calculate the volume of one gram molecular weight of the airborne contaminant (e g , 92 13 grams of toluene) at that temperature and pressure by using the ideal gas law formula: PV = nRT
CCOHS: Occupational Hygiene - Ototoxic Chemicals Examples of lipophilic substances with a molecular weight less than 500 g mole (Daltons) are solvents such as hexane, benzene, toluene, styrene, chlorinated solvents (e g , chloroform, tetrachloroethylene, carbon tetrachloride, methylene chloride), etc
CCOHS: Static Electricity Solvents and fuels produced from petroleum (e g , benzene, toluene, mineral spirits, gasoline, jet fuel) can build up a charge when they are poured or flow through hoses They tend to hold a charge because they cannot conduct electricity well enough to discharge when in contact with a conducting material, like a metal pipe or container, that is
Hazard and Risk - Hierarchy of Controls - Canadian Centre for . . . Figure 1: Hierarchy of Control Some sources may use a variation of this hierarchy of controls For example, the CSA Standard 1002-12 (R2022): Occupational health and safety – Hazard identification and elimination and risk assessment and control includes a layer called "systems that increase awareness of potential hazards"
CCOHS: Diesel Exhaust - Canadian Centre for Occupational Health and Safety Aromatic compounds such as benzene, toluene, and polycyclic aromatic hydrocarbons (PAHs) Diesel particulate matter (DPM) Almost all particulate emitted by diesel engines is respirable (PM 10 micron), with the majority of the particulates have diameters less than 1 0 micron