Open Access Article.

ELSEVIER Tetrahedron Letters 53 (2012) 4070-4073 Contents lists available at SciVerse ScienceDirect Tetrahedron Letters journal homepage: www.elsevier.com/locate/tetlet A theoretical study on the pyrolysis of perfluorobutanoic acid as a model compound for perfluoroalkyl acids Mohammednoor Altarawneh * Process Safety and Environmental Protection Research Group, School of Engineering, The University of Newcastle, NSW 2308, Australia Chemical Engineering Department, Al-Hussein Bin Talal University, Ma'an, Jordan ARTICLE INFO Article history: Received 17 February 2012 Revised 8 May 2012 Accepted 23 May 2012 Available online 30 May 2012 Keywords: Perfluorobutanoic acid Pyrolysis Reaction rate constants Decarboxylation ABSTRACT The potential energy surface is mapped out for all plausible reactions in the self-decomposition of perfluorobutanoic acid (CF3CF2CF2COOH) as a model compound for the notoriously toxic and bio-accumulative perfluoroalkyl acids.

ENVIRONMENTAL ENGINEERING SCIENCE Volume 17, Number 6, 2000 Mary Ann Liebert, Inc.

Assogomma comments on the Annex XV Dossier of the universal PFAS restriction proposal September, 6th 2023 1 1.

Application: fluororesin for measurement instrument-related applications Fluororesin used: PTFE (CAS No. 9002-84-0) Product Overview: reference reflectors and septums for calibration of colorimeters Fluororesin is used in measurement instrument, reference reflectors used in the calibration of colorimeters such as color chromatometers, and septum materials for analytical vials.

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Assogomma comments on the Annex XV Dossier of the universal PFAS restriction proposal September, 6th 2023 1 1.

PFAS Restriction - Public Consultation - non confidential comments September 2023 A.

Basic investigations on thermochemical degradation of PFAS in laboratory and pilot plants to determine optimum combustion conditions for the thermal treatment of PFAS-containing waste materials Funded by the Federal Environment Agency (Umweltbundesamt, UBA) under FKZ 3722 36 302 2 // AZ 37 510/0031 Project duration: 01.01.2023 - 31.12.2025 Project partners: Federal Institute for Materials Research and Testing (BAM) (project management) Karlsruhe Institute of Technology (KIT), Institute of Technical Chemistry (ITC) More than 4,800 per- and polyfluorinated alkyl substances (PFAS) are currently known.

Processed product for energy applications Application Number: Energy (Annex E.2.12.)

El BASF We create chemistry September 20, 2023 Response to the ECHA Public Consultation of the Restriction on the manufacture, placing on the market and use of PFAS in the EU Part 1/7 General remarks and proposals Our Key Messages BASF is committed to safe and sustainable products and supports balanced regulatory measures for PFAS.

Statement of Endress+Hauser on Recent EU (European Union) Initiatives on Restricting PFAS (Polyfluoroalkyl Substances) Endress+Hauser recognizes the ongoing initiatives regarding restrictions on the use of PFAS due to their negative impact on the environment.

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Estimation of the nb of sequences in PcPc using TFA for synthesis PcPc Data on May-23 nb* % using TFA nb using TFA Dipeptides 82 0% 0 mostly made by liquid phase not using TFA Tripeptides 116 50% 58 Tetrapeptides 113 90% 101 Pentapeptides 120 95% 114 Hexapeptides Heptapeptides 119 95% 79 95% 113 mostly made by SPPS (using TFA) 75 Octapeptides 64 95% 60 Nonapeptides 63 95% 59 Decapeptides 85 95% 80 Oligopeptides (>10AA) 303 10% 30 lower sequences made by SPPS, larger made by biotechno Polypeptides (>100AA) - 0% - mostly made by biotechnology total 1144 total using TFA 690 60% estimated values * these numbers are based on the peptidic "core name" (without prefix and suffix) and may be under evaluated (ex: tripeptide-1; acetyl-tripeptide-1; palmitoyl-tripeptide-1; copper tripeptide-1 are only one sequence in this count!)

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