"…surprisingly, solar energy can be trapped and stored for long periods in salt water - in a structure known as a solar pond - and this energy can be used to generate electricity via a methylene chloride-powered turbine. This approach has potential to supply power to remote rural areas…"

Dr. Raymond Davis Jr. - Picture Courtesy of Brookhaven National LaboratoryDr. Raymond Davis Jr. - Picture Courtesy of Brookhaven National Laboratory"…Chloroform and trichloroethylene for super-fast computers! Novel applications have been reported for chloroform and trichloroethylene molecules in development of an interesting new area of IT: quantum computers. These perform calculations using atoms instead of the computer chips used in conventional computers…"  

"…Enough chlorinated solvent perchloroethylene (PER) to clean 120 million garments in a modern machine helped an American chemist become one of three Physics Nobel Prize winners in 2002. Almost 400,000 litres of PER, which is widely used by dry cleaners, was utilised by Raymond Davis Jr. to conduct a radiochemical experiment in a tank installed down a South Dakota gold mine.

The tank was placed 1,500 metres below the earth's surface to isolate it from cosmic rays that could interfere with detection and measurement of solar neutrinos.

The Davis experiment ran almost continuously for 24 years (1970-94) during which it is calculated 2,200 argon atoms were produced in the tank, of which 776 were estimated to be produced by solar neutrinos…"


DCM & the Ozone Layer

November 2017 

Dichloromethane (DCM) is a highly Volatile Organic Compound (VOC) with a short atmospheric lifetime of only 0.4 years, hence defined as a Very Short Lived Substance (VSLS), but a negligible Ozone Depletion Potential (ODP). Recent publications (e.g. Hossaini et al.) discussed the effect of DCM on the stratospheric ozone, which postulated a high future growth rate of global DCM production and emissions, which led to discussions to include DCM into the Montreal Protocol on the protection of the ozone layer. ECSA and HSIA have provided factual information on global production and emissions by industry, global natural production, behaviour and effect on the stratospheric ozone, and other regulatory developments at a UNEP meeting on the Montreal Protocol in Nov 2017 (available here), based on a scientific assessment of Archie McCulloch (full paper available here; a one-pager summary is also available here).


TRI Authorisations granted

September 2018

Trichloroethylene (TRI) can be used safely under controlled conditions. Five authorisations have been granted to BlueCube Germany (a subsidiary of Olin) to continue to produce TRI for specific uses, for example Industrial Parts Cleaning. Customers of this producer can use TRI for these applications under the conditions set by the EU Commission and the defined risk management measures.


UBA PMT criteria published

February 2018

The German Environment Agency (UBA, Umweltbundesamt) has published the assessment of "Persistence, Mobility and Toxicity (PMT)" with the desire to protect drinking water sources. Applying conservative criteria for PMT as defined by UBA, perchloroethylene (PER) and trichloroethylene (TRI) appear as number 2 and 3 on the report. UBA also aims to establish PMT as an equivalent concern to identify SVHC substance for authorisation under REACH. ECSA does not consider SVHC identification using PMT criteria as the appropriate tool to improve drinking water quality due to this being a pure hazard based approach and thus does not consider risk. TRI is already listed in Annex XIV (authorisation) and today PER is handled almost exclusively in closed systems with no intentional emission to water or soil. For further information see the ECSA position paper on PER here.


New Study on Dichloromethane

February 2018

Together with HSIA, ECSA supported a study to clarify the mode of action of cancer formation for Dichloromethane (DCM). The study results have been published end of 2018. The outcome of the study shows that below the threshold there is no risk of cancer formation related to DCM.

The full paper is available here.