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Bookmark or Share- CCOHS: Synergism and related termsThis effect is the most common when two chemicals are given together. Potentiation - This effect results when one substance that does not normally have a toxic effect is added to another chemical, making the second chemical much more toxic; for example: 0 + 2 > 2, not just 2. Antagonism - Antagonism is the opposite of synergism. It is the ...
- CCOHS: ChemicalsChemicals. Access chemical information with substance. Find resources on chemical hazards, product safety, WHMIS, (M)SDSs, transport of hazardous materials, toxicity, and safe work practices.
- WHMIS - Hazard Classes and Categories - Canadian Centre for ...Products classified in this hazard class are fatal, toxic or harmful if inhaled, following skin contact, or if swallowed. Acute toxicity refers to effects occurring following skin contact or ingestion exposure to a single dose, or multiple doses given within 24 hours, or an inhalation exposure of 4 hours.
- What is a LD₅₀ and LC₅₀? - Canadian Centre for Occupational ...The data above show that dichlorvos is much less toxic by ingestion in pigs or dogs than in rats. Using Table 1, dichlorvos is moderately toxic when swallowed (oral LD 50) and extremely toxic when breathed (inhalation LC 50) in the rat. Using Table 2, dichlorvos is considered very toxic when swallowed (oral LD 50) by a rat.
- What Makes Chemicals Poisonous - Canadian Centre for Occupational ...Less commonly, workplace chemicals may be swallowed, for example, from contaminated food or cigarettes. The eyes may also be a route of entry. Usually, however, only very small quantities of chemicals in the workplace enter the body through the mouth or the eyes. Chemicals can also enter the body through skin penetration, e.g., injection.
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