TCAS
Toxicology Consultants & Assessment Specialists, LLC

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Hazardous Substances   Toxic Substances: Hazardous Substances
TCAS provides toxicological assessment services for a wide range of hazardous substances [a] Hazardous substances constitute a special class of toxic agents in that they pose immediate dangers to human health via simple contact or proximity. TCAS provides toxicological consulting and assessment services for a wide range of hazardous toxic substances,... (more)

Consumer Product Toxicology   Toxic Substances: Consumer Product Toxicology
Consumer product toxicology involves a wide range of chemical and biological compounds. a Consumer product toxicology evaluations involve a wide range of chemical and biological compounds. With respect to toxicity, the manner in which consumer products are used can be just as important as the chemicals in the products. For example, ammonia and chlorine... (more)

Toxicology of Pesticides   Hazardous Substances: Toxicology of Pesticides
Overview Pathways of pesticide movement in the hydrologic cycle USGS [a] Pesticides are in widespread use throughout the U.S. and the rest of the world. There are many classes of pesticides including insecticides pyrethrins and pyrethroids, n-methyl carbamates, organophosphate insecticides, organochlorines, biologicals and acaricides , herbicides chlorophenoxy... (more)

Professional Experience and Toxicological Specializations   Professional Experience and Toxicological Specializations
TCAS has assessed hundreds of different types of toxic substances and exposure effects. [a] TCAS provides professional, comprehensive forensic and environmental exposure analysis, risk assessments and causation determinations. With more than 28 years of hands-on experience, our cases cover a vast range of toxic exposure-related issues combining toxicological... (more)

Site Map   Site Map
Toxicology Consultants and Assessment Specialists, LLC TCAS has devoted its website to the role of the expert toxicologist and the science of toxicology. The following pages present both original and edited public-domain information compiled as a useful educational resource. This site map is a content reference intended to assist with rapid location... (more)

A Message from Dr. William R. Sawyer
Chief Toxicologist, TCAS, LLC

A message from Dr. William R. Sawyer, Expert Toxicologist

Hazardous substance toxicology requires application of scrupulous attention to detail and methodology. Many years of experience are a virtue in conducting such assessments, particularly in cases involving widespread contamination.

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This is an informational and instructional website devoted to toxicology. It presents both original and edited public-domain content compiled as a useful educational resource. References and footnotes have been included wherever possible and image sources have been cited where appropriate. Although most pages can be printed or downloaded as PDF files (and we encourage you to make constructive use of our information), this website is copyrighted and material may only be reproduced and/or distributed with prior permission from TCAS, LLC.