Document xjyoZVg7K08Jdp1y4zE9L7wbg

is a D4 siloxane and it may be an impurity from the synthesis of the main siloxane surfactant. There are large differences in toxicity between cyclic siloxanes such as D5 or D6 (I am led to believe is banned) and linear / branched siloxanes. Kindly note that the SDS clearly stated that it is R&D only-not for commercial use. As such I have written back to Johnson Control asking them the following: 1. Is the above Ansul foam to be marketed as a F3. 2. Is this the direction ANSUL, CHEMGUARD, SABO, SKUM and Williams now owned by Johnson Controls will be taking to make F3 using Cyclotetrasiloxane. 3. Whether other F3 manufacturers are also using Cyclotetrasiloxane in its foam formulation. And awaiting their reply and will share with you all their response As I know the representative m and have dealt with for many years whilst in government and then out of government I thought in friendship forewarn that the Ansul new foam may present concerns to their clients (I am) as Cyclotetrasiloxane has toxicity issue as stated by the EU as shown in: https://www.obelis.net/blog/cyclopentasiloxane-d5-and-cyclotetrasiloxane-d4-restricted- in-the-eu/ ( I really like to know more about this and if the EU people in the email kindly introduce me to the right people in EU is very much appreciated as I fear if this is not addressed it may creep into F3 which I believe will be another nightmare. PFAS is bad enough). I also understand Canada has a position on siloxane in that Environment Canada assessments concluded that cyclotetrasiloxane and cylcopentasiloxane, also known as D4 and D5, are toxic, persistent and have the potential to bioaccumulate in aquatic organisms (Ref: Suzuki, D. The Dirty Dozen: Siloxanes. 2010; Available from: https://davidsuzuki.org/queen-of-green/dirty-dozen siloxanes/ ) Siloxane group has been found in Denko AFFF 1 %, 3 % and 6 % and its alcohol free AFFF formulation. To my knowledge so far Denko AFFF are the only ones to have also incorporated siloxanes to bolster its surfactant make up. Due to the complexity of firefighting foams and fluorine free foams and it's so called commercial secrecy, surprising information and data come forth now and then. Most studies and reviews tend to focus on firefighting foams made in the US, UK and Europe and little information for those made in India and China. To this day there is still anecdotal information and rumours that China and India still produce foams with PFOS however when asked several well established foam manufacturers in UK and Europe no one seems to be able to give me documented information or data or SDS to show the Indians and Chinese still made foams with PFOS. I even asked several Indian and Chinese foam companies whether they made foams with 3 The above 4 policies now influence users on the use and choice of firefighting foams as companies are now trying to comply with all 4 policies in Australia hence many transitioning to F3 including Defence. I trust the above is useful for you all to know what is happening in the firefighting foam space (if not already known) and its relation to Australia. Needless to say I intend to bring up the siloxane matter to the environmental regulators. I purposely email you all to seek your expertise on siloxane group environmental and health impacts and its ensuing policy and regulation due your expertise, experience and knowledge on such matter. Stay safe and healthy kind regards Director ENVIRON PTY LTD Mobile: Perth Western Australia Email: www.environwa.com.au Adjunct Professor Murdoch University Adjunct Professor Curtin University environ Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u niet de geadresseerde bent of dit bericht abusievelijk aan u is verzonden, wordt u verzocht dat aan de afzender te melden en het bericht te verwijderen. Het RIVM aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die verband houdt met risico's verbonden aan het elektronisch verzenden van berichten. www.rivm.nl De zorg voor morgen begint vandaag This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. RIVM accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages. www.rivm.nl/en Committed to health and sustainability 5