Darkness Gathers as EPA Proposes New Classification for Perc. |
12/05/2009 |
The horizon for perc users could grow dimmer if the U.S. EPA’s new toxicological review of perc makes it out of draft form as-is. Three weeks ago the EPA issued its updated, draft toxicological review of perc. According to a Washington report, David Bussard, director of the Washington Division of EPA’s National Center for Environmental Assessment, said perc should be classified as "likely to be a human carcinogen" and as causing neurological problems based on new human studies, a new understanding of how perc moves through the body, and new laboratory animal cancer tests. "This possible reclassification could impact the industry in a devastating way," said Mary Scalco, Senior Vice President of DLI. "This would effectively raise the EPA’s risk assessment of the chemical leading to tougher cleanup standards, and possibly stricter worker exposure standards." The June 26 assessment states that 10 laboratory animal studies found that perc causes cancer when inhaled or ingested and that human studies found an association between exposure to the solvent and a slight increase in cancer "although a causal association has yet to be definitively established." EPA will accept comments for 90 days, then the National Academy will peer review the report. The industry will definitely be submitting comments on this material.
Canadian Ministry of Health Gives Unfavorable Review of Siloxanes |
11/05/2009 |
The Canadian Ministry of Health and Environment issued a draft screening assessment for a number of chemicals including silicon based chemicals D4, D5, and D6. GreenEarth’s solvent is D5. The assessment claims that the silicon chemicals are persistent, bio-accumulative, and toxic. It also suggests these chemicals behave like persistent organic pollutants, may have long-term harmful environmental effects, and should be looked at for elimination from the environment. The Canadian draft study also says the siloxanes do not pose a threat to human health at the quantities they are entering the environment. DLI CEO Bill Fisher met with GreenEarth execs Tim Maxwell and Jim Douglas at Texcare in Frankfurt, Germany, right after the information was made public. Maxwell and Douglas said they were blindsided by the Canadian announcement and will do everything they can to separate D5 from the other silicone chemicals in the Canadian assessment.
"GREEN" DRY CLEANER BANS TOXIC SOLVENT |
23/04/2008 |
Dollar Wise Quality Cleaning has become the first dry cleaner in Winnipeg to "go green" and ban the use of traditional highly toxic dry cleaning solvent. Shane Johnston, general manager and co-owner of Dollar Wise, a 10-year old Winnipeg company, said it is part of a growing trend among dry cleaners to use less toxic chemicals like DrySolv, a patented, stabilized n-propyl bromide mixture. He figures that less than 10 percent of the Canadian industry uses the new, more environmentally friendly product. But even so, he said he does not believe there are any business risks in being such a trail blazer.
Boeing St. Louis (McDonald-Douglas) approved EnSolv 5408 Precision Solvent to their PS 12020 Rev. Y Aerospace Vapor Degreasing Specification. EnSolv 5408 is the only nPB degreasing solvent approved for commercial and/or military applications.
Is DrySolv Right for Me? PART 3 |
06/02/2008 |
Last month I had not received the proper gaskets for my BowePermac P300 to give you a true reading on solvent mileage. I am happy to report that the gaskets needing replacement have been installed, tightened appropriately and are containing the solvent and vapors without leaking.
Boeing has issued PSDS 6-62 to supersede the previously released PSDS 6-59 allowing the use of EnSolv-5408 as an alternative vapor degreasing solvent to TCE and PERC. The updated PSDS 6-62 further permits the addition of EnSolv-Spec 490 stabilizer booster, which replenishes the proprietary stabilizer mixture within the EnSolv-5408 solvent, thus prolonging it's useful life in certain rigorous usage scenarios.
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