CHE 617 Lecture Notes - Lecture 2: Safety Data Sheet, Vapor Pressure, Flash Point
31 Mar 2017
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Physical, chemical properties and hazardous potential are identified in. The msds has the following information: hazardous ingredients and their threshold limit values (tlv: tlv- Twa time-weighed-average for 8 hour shift, tlv-stel short- term exposure limit 15 minutes, tlv-c ceiling limit: physical and chemical properties: vapour pressure, boiling point. ect : fire and explosion hazard data: flash point, flammable limits (lel, uel) (showing a sample of msds, evaluation. 3. 1 evaluating exposures to volatile toxicants by monitoring. The time-weighed average concentration for continuous exposure and monitoring in work place can be estimated as: C1, c2, cn are the averaged concentration of the toxic chemical during the periods t1, t2 tn over which the employees are exposed. Select representative locations throughout the plant for sampling since toxicant concentration may vary from location to location. For a mixture of toxicants, if the effects of the toxicants are assumed to be additive, the combined exposure is:
