AboutDavid L. Russell, PE Expertise I`m a Chemical,Civil and Environmental Engineer and have a number of projects in all phases of the environment.
I have worked in the chemical industry and am active in professional societies, and am currently on an industrial wastes committee for the Water Environment Federation, and have taught courses in remediation in the US and abroad.
I have written one book on Remediation of petroleum Contaminated Sites, and have a second book on PRACTICAL WASTEWATER TREATMENT to be published by John Wiley in September, 2006. I've also written over 30 articles on various elements of environmental problems and cleanup. Most Recently, I have addressed a NATO Scientific and Techical Conference on Ecoterrorism, and have worked with the same group on remediation of sites contaminated with Chemical Warfare Agent materials and othe materials as well. . I can answer q`s about Chemical and Environmental Engineering, land development, air pollution, water pollution, soil and water cleanup, combustion, international environmental problems, industrial processes chemical processes. Civil and Environmental and Chemical Engineering. Overall, I have over 35 years of experience in this area. Note: I do not answer homework questions
Experience I love work in the third world and developing areas
because it is challenging and one can get a sense of accomplishment.
Question hi,
i know certain plastics are more toxic than others, the plastics that are not as harmful are the ones with the recycle numbers 1,2,4,5. what if something(a large toy) was made by roto plastic using number 1,2,4,5 plastic and smells very strong, then isn't the smell from the roto plastic toxic/harmful?
About the odor. None of the plastics contains anything harmful as most are used as "food grade" materials. The smell may be from phthalate plasticizers which might be harmful. I haven't checked but you want to look up the MSDS on that at the cornell website for MSDS. The code is "MSDS Phthalate Plasticizers" for your search engine.
It should take you there, and look down toward the bottom of the sheet for information on health risks. Look at several different manufacturers.
All of the foregoing is only a guess. It may be another plasticizer entirely or a mould release compound used in releasing the plastic from the injection mould used to make it. I really don't know. You may want to contact the CPSC or the manufacturer for more information. Sorry that I can't be of more assistance.
Good luck.
