Friday, June 26, 2015

Student Employee Highlight: Abby Giarrosso

Abby Giarrosso is an upcoming sophomore at Umass Lowell and has been a TURI work study employee since September of 2014. She is a Chemistry major who loves to basket weave. Abby loves chemistry due to it's real life applications and radical changes in the science field. She decided to work at TURI since it related more to her study even though the Lowell Public Access Channel wanted her as an employee.

Her favorite projects in the laboratory so far have been the carpet staining testing and the safer paint stripping alternative testing. She is still unsure what path she would like to direct her studies in Chemistry, but she is learning a lot through projects she is participating in within the lab.

She is currently helping with a project for TURI's Greg Morose and Umass Lowell professor Dr. Daniel Schmidt creating a safer alternative chemical database. Her job is to research chemicals that are environmentally safer using the Hansen Solubility Parameter program (HSP) and the simplified molecular- input line entry system (SMILES). This program will help with the formulation of safer products. Greg Morose and Dr. Schmidt are working with the HSP creators to create a database that can be used on a global level.

Tuesday, March 31, 2015

Methylene Chloride Part 1

“The TURA Science Advisory Board (SAB) has recommended designating methylene chloride (also known as dichloromethane) as a higher hazard substance under TURA. With this designation, the reporting threshold for methylene chloride use would be lowered to 1,000 lb/year for companies in TURA-covered industry sectors with ten or more employees. New companies entering the program under the lower reporting threshold would be required to file annual toxics use reports, pay annual toxics use fees, and develop a toxics use reduction plan every two years. In addition, the TURA program would prioritize methylene chloride in allocating program resources, ensuring that facilities receive targeted assistance in reducing or eliminating use of this chemical. Based on this analysis, the Toxics Use Reduction Institute supports the SAB’s recommendation that methylene chloride be designated as a higher hazard substance.”
– Toxic Use Reduction Institute, “Summary of Policy Analysis, Higher Hazard Substance Designation Recommendation: Methylene Chloride or Dichloromethane (CAS 75-09-2)”

The TURI Cleaning Laboratory, laboratory assistants have been working with different solvents to find an alternative for Methylene Chloride for a couple of manufacturing companies that are currently using that chemical for removal of resins from different materials. According to the 2000 Toxicological Profile for Methylene Chloride by the Agency for Toxic Substances and Disease Registry, acute toxicity at short term exposure to methylene chloride can cause symptoms including skin, eye and respiratory irritation, depression of central nervous system function, headache, dizziness, nausea, incoordination, and unconsciousness.

At very high exposure, it can be lethal and cause damage to the liver, kidney or central nervous system. Some studies suggest that long term exposure to organic solvents such as methylene chloride may cause lasting and possibly permanent central nervous system effects. Fatigue, lack of muscle coordination, loss of concentration, short term memory loss, and personality changes exhibited as nervousness, anxiety or irritability are some of the potential long-term effects of chronic and frequent exposure. Methylene chloride was highlighted in the February 24, 2012 CDC Morbidity and Mortality Weekly Report (MMWR) due to the deaths of 13 bathtub refinishers (including one in Massachusetts) using methylene chloride containing products.

Belcastro Furniture Restoration Company ,located in Tyngsboro, MA, currently uses Methylene Chloride on their furniture to remove paint. At the moment, only the owner has proper training and ability to use the chemical using the correct personal protective equipment (PPE). We looked at the process that the company used on the wood and recreated that process within the laboratory. Our goal was to find an alternative that was affordable and had the ability to work as well, if not better, than Methylene Chloride. If we did find an alternative that worked, more employees would be able to work on paint removal which could increase productivity instead of just having one person working with one chemical for every furniture piece. So not only is it beneficial to switch to an alternative for health reasons, but it would allow this local business to increase within their business by having more people trained on paint removal.

We tested on a couple of chairs they provided us with that had lead paint and milk paint. Milk paint is one of the most difficult paints to remove from wood since it is protein based and most paint strippers won’t remove it according to RealMilkPaint. We currently have had a couple of possible solvent alternatives that are working very well at removal of both paints. Product Bio-circle CB 100 completely stripped the milk paint within 30 minutes at 60C temperature without using an abrasive pad. For the lead paint, we found that the product D-Solve 917 worked best when heated to recommended temperatures in the MSDS and completely removed the lead paint. We do not endorse any products, but are simply informing on the general study of different products.

Luis Raudalis

Alicia Melvin and Luis Raudalis

Tuesday, March 24, 2015


Still at it. We are still here.

Friday, July 26, 2013

TURI Lab Achieves Champion Status

The Lab encourages the use of safer surfactants through its connections to EPA's Design for the Environment and the Safer Detergents Stewardship Initiative. We have been recognized by EPA as a Champion of the SDSI program. We are constantly reviewing the latest surfactants listed in the CleanGredients database and our testing database is listed as tool for performance testing on their site.

Tuesday, February 14, 2012

Why Have Your Product Tested with the TURI Lab

TURI Lab testing involves rigorous scientific testing. We have partnered with IEHA to help promote effective cleaning products. The program tests green product performance on real-world soils and to be approved for the IEHA HPCP program, a product must perform exceedingly well on more than one type of dirt.

Here is an example of a successful product

Thursday, January 5, 2012

Database can answer your cleaning questions, just ask.

From time to time we get requests for finding safer cleaning products. Many times these questions can be answered by using our on-line test results database, CleanerSolutions.

The latest question:

From Scotland:
I'm advising a community group in Stirling who have been told that a trike unit for cleaning such stock will be situated near their houses. From a whole range of angles - green chemistry, green jobs ( more and safer jobs from not using/reducing solvent use) , water pollution, general toxics use reduction, reduced occupational hazards to workers in the unit - it doesn't seem to make sense to clean this way. Would you happen to know about the USA alternatives to solvent use for cleaning railway rolling stock? Has TURI produced any reports on this or do you know of any good contacts who might be able to help me on the subject?

Our Response:
We have done many projects replacing TCE. Here is a link to a couple of larger projects: Results 1, Results 2
This link lists the products that we have successfully tested for replacement of TCE for all soil types: Results 3
This is a somewhat shorter list for oils and grease removal: Results 4

And a question from Washington State:
We're looking to clean some ceramic parts that were held in place using Crystalbond. We had FTIR done on some parts that showed signs of staining after heating in a vacuum but the results were inconclusive. I did a search for Crystalbond FTIR and your site came up. I have two questions in your client 155 project 2 you mention FTIR showing both toluene and or Crystalbond. I was wondering if it would be possible to get a copy of the FTIR and see if that's what we're seeing. My second question has to do with the cleaning agents you discuss in C155 part 1. I've been looking for the DuPont DBE-4 (which you list as 99.6% effective) but haven't found it available in an over the counter solution, is there a brand-name product I should be looking for? Also, though it's not mentioned in your report, is there any chance the results were compared with Acetone (typically used solvent) and/or Crystalbond 509 solvent? We're going to try bulk cleaning with the Shopmaster RC you recommend (replacing the acetone currently used) but would like to try the DBE-4 for final cleaning.

Our Response:
Glad that the site provided some useful information for you. You may not be able to find DBE-4 on its own. We were informed later on that the solvent is normally sold to manufacturers of products as an ingredient. The Shopmaster RC does have a DBE mixture in it and may be the closest you can get.
Testing did include Crystalbond 590 S Stripper (see attached reports 155-4, 155-5).
The FT-IR may not be so helpful but I have included the report and image (report 155-6)

Ask your cleaning solvent substitute question today!

Tuesday, January 3, 2012

Green and Clean: Achieving the Best of Both Worlds

Here is a link to a recent article on effective green cleaning.