Entomological specimens make for excellent qualitative toxicological specimens. Safrole requires metabolic activation before exhibiting toxicological effects. Toxicological studies have further illustrated its highly toxic nature. These can be chemical, biological, or toxicological. The environmental and toxicological effects of toluene have been extensively studied. Exposure to these compounds and toxicological implications are currently being studied. In 1998 the EPA released a toxicological review of hexavalent chromium. Ethane poses no known acute or chronic toxicological risk. This approach is controversial, however, due to the possibility of ecological and toxicological side effects. Limited information is available indicating significant toxicological effects of TPhP. This case demonstrated the ability of toxicological analysis to help determine origin. There is very limited toxicological data on inhaling flavoring additives. Its toxicological properties have not been fully investigated. Toxicological analysis of the meal confirmed the presence of cucurbitacin. However the doubtful purity of this study increased because of uncertainty concerning the toxicological data.