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U.S. EPA Proposes Monitoring TFA in Drinking Water
TFA, an HFO byproduct, is among 30 chemicals under review; the agency is holding webinars on the topic on August 11 and 12, with written feedback due August 31.
European Food Safety Authority Lowers Values for Safe Consumption of TFA
Intended to support consumer protection regulations, EFSA’s updated ADI and ARfD values are based on recent animal studies that showed TFA reducing levels of a thyroid hormone.
ATMOsphere to Host Webinar with Hanon Systems Discussing Its New White Paper on TFA Emissions in the European MAC Sector
The webinar will be held June 18 at 3pm CET.
Hanon Systems Estimates TFA Levels Generated by Automotive F-Gas Emissions
The manufacturer’s new report calculates past and future generation of the ultrashort-chain PFAS in the atmosphere, pointing out the availability of natural alternatives.
TFA Reduces Antibody Production in Human Study at Unexpected Levels
University of Milan researchers find f-gas byproduct TFA’s effects on the immune system in lab tests are similar to those of known immunotoxicant PFOS.
Democrats Propose PFAS Legislation in U.S. Congress That Would Include F-Gases and TFA
McCollum in the House and Durbin in the Senate introduce bill that defines PFAS as having one fully fluorinated carbon atom, changing EPA’s definition.
ECHA Launches Consultation on SEAC’s Draft Opinion on PFAS
The European Chemicals Agency has invited stakeholders to comment until May 25 on the draft opinion of its SEAC Committee on the proposed restriction of PFAS, including f-gases.
Canadian Researchers Find Marked Decline of Atmospheric TFA During COVID
They attribute the drop to the reduction in usage of short-lived precursor HFO-1234yf, notably in car air-conditioning.
Duke University Researchers Study Potential Link Between PFAS, Including TFA, and Thyroid Dysfunction in Firefighters
Two antibodies that can sometimes disrupt thyroid function were monitored in a small number of firefighters who were tested for PFAS, including TFA, but the results to date are inconclusive.
Monitoring of PFAS, Including TFA, Begins Under EU Drinking Water Directive
As of January 12, member states must measure either total PFAS, including TFA, or the sum of 20 PFAS, with limits of 0.5mcg/L and 0.1mcg/L, respectively.
Pesticides NGO Disputes Chemical Companies’ Interpretation of TFA Toxicity Studies
PAN Europe report says companies’ TFA Task Force downplayed the results of animal studies and recommended overly high TFA water limits to EU regulators.
Teko CO2 Products Sold in 2024 Avoided the Lifetime Release of 3.94 Million Metric Tons of CO2e and 127.5 Metric Tons of TFA
The calculation was based on a 20-year GWP and done as part of the process for reapproving Teko for the ATMO Approved Natural Refrigerants Label.
ATMOsphere Projects Annual TFA Produced by F-Gas Emissions from MAC in Europe to Quadruple by 2034
Leaks of mostly HFO-1234yf are expected to generate a peak level of about 8,000 metric tons of TFA in 2034 but then decline as electric car manufacturers increasingly use natural refrigerants.
Canadian Researchers Find More Atmospheric TFA in the Summer and in Urban Areas
Using a novel air sampler, the study revealed trends consistent with the leakage of HFO-1234yf in car air-conditioning.
More Regulation of F-Gases May Be Needed Because of TFA Link, Says ECHA’s Updated PFAS Proposal
Existing legislation, which focuses on GWP, does not address the risks associated with f-gases’ very persistent degradation product.
ECHA’s Updated PFAS Proposal Retains Most Restrictions on PFAS Refrigerants
Many HVAC&R applications keep their original exemption period though MAC is given longer exemptions as ECHA evaluation continues.
Illinois and New Mexico Exclude F-Gas Refrigerants from PFAS Laws
Though they define these refrigerants as PFAS, the states exempt those that are EPA-approved, contrary to PFAS bills in Maine and Minnesota.
Secon Hydrocarbon Chillers and Heat Pumps Sold in 2024 Avoided the Lifetime Release of 1.04 Million Metric Tons of CO2e and 5.5 Metric Tons of TFA
The calculation was based on a 20-year GWP and done as part of the process for reapproving Secon for the ATMO Approved Natural Refrigerants Label.
European NGOs Launch Awareness Campaign on F-Gases, TFA and PFAS
DUH, EEB and ChemSec have produced a short animation highlighting the dangers of synthetic refrigerants and their persistent byproducts.
Study Finds TFA in Juices and Wine in Canada
The HFO byproduct trifluoroacetic acid was detected in multiple beverage samples at levels similar to previous studies.
U.S. Use of HFOs and HCFOs Expected to More Than Double by 2030, Warns EIA
Consumption could reach 106,000 metric tons by the end of the decade, compared to just 40,000 metric tons in 2021, according to a new report from the NGO.
The EU, Norway Urge Precautionary Approach to TFA at 47th OEWG
The prevalence of HFO byproduct TFA in the environment and its potential toxicity belie a new report by the Montreal Protocol’s TEAP that TFA poses little risk, the delegates say.
ATMOsphere Report Highlights Rising Threat of HFOs and TFA
This second installment, to be discussed July 10 at an OEWG side event, addresses the growing evidence of HFO-produced TFA’s proliferation in the environment and its potential toxicity.
California Drops F-Gases from PFAS Bill, Bowing to Industry Pressure
The “essential use” portion of Senate Bill 682, which would have banned many PFAS f-gases in 2035 and 2040, has been removed, according to NRDC scientist Anna Reade.
ATMO America: Researchers Find TFA in Two-Thirds of Drinking Water Samples in Rhode Island
TFA, a by-product of f-gases, was the dominant PFAS with concentrations up to 2.4mcg/L among five ultrashort-chain chemicals.
Scientists Publish Statement Defending PFAS Definition that Includes F-Gases and TFA
The science-based OECD definition of PFAS pollutants is being challenged by the International Union of Pure and Applied Chemistry, an industry-backed group.
Germany’s Linkage of TFA to Reproductive Toxicity Officially Submitted to EU
The submission includes the public release of two 105-page dossiers detailing Germany’s assessment of TFA, an f-gas by-product, with a call for stakeholder comment.
Minnesota Starts Toxicity Review of TFA, an HFO By-Product
The state’s Department of Health invites interested parties to share information on TFA toxicity studies.
Coalition for PFAS-Free Cooling & Heating Event to Examine TFA as a Growing Environmental Threat
The online event, taking place April 24, is the second in a three-part series hosted by the Coalition.
Canada Seeks More Feedback on PFAS, Including F-Gases
The deadline for comments on the ‘Risk Management Approach’ to PFAS as a class is May 7.
Study Puts Annual Cost of Removing PFAS from the Environment in Europe, Including TFA, at €100 Billion
The ‘Forever Lobbying Project’ looks at two remediation options – a legacy scenario and an emerging scenario that includes f-gas by-product TFA.
California Introduces PFAS Bill That Includes Bans of F-Gas Refrigerants
The bill would be one of the most aggressive PFAS regulations in the U.S., prohibiting most uses of refrigerants considered PFAS by 2033.
Two Studies Confirm that HFO-1234ze(E) Breaks Down into Some HFC-23 in the Atmosphere
Researchers in Australia and the U.S. separately produce the first hard data showing conversion of certain HFOs into a high-GWP HFC.
IIAR 2025: Famed Lawyer Bilott Urges NatRefs Industry To Spread the Word on PFAS Refrigerants
In IIAR keynote, the ‘Dark Waters’ attorney shows how lessons of PFAS litigation apply to f-gases and TFA.
Belgian Village Shuts Down Mineral-Water Spring Due to High TFA Level
Villers-le-Gambon is one of the first governmental authorities to act on TFA, a by-product of certain f-gases and pesticides.
How Harmful Is TFA?
Trifluoroacetic acid, an atmospheric by-product of certain f-gases, has been found in human blood. Environmental chemist Shira Joudan shares her thoughts on what this means.
Coalition for PFAS-Free Cooling & Heating Hosting Online Event Examining the Growing Concern of PFAS in the HVAC&R Industry
The session, taking place February 14, will be the first in a three-part series.
Minnesota Works on Process to Assess Whether PFAS Refrigerants Would be Banned in 2032
‘Amara’s Law,’ one of the most aggressive PFAS regulations in the U.S., requires PFAS products to be ‘essential’ to avoid prohibition.
Maine to Ban Sale of PFAS Refrigerants and PFAS-Containing HVAC&R Equipment in 2040
Unlike the U.S. EPA, Maine defines PFAS to include some fluorinated refrigerants, including TFA-producing HFO-1234yf.
ATMO Europe: ‘Stop TFA Emissions Now’
That’s because we know enough to conclude that f-gas byproduct TFA is a very real risk to humans and to the environment, said DUH representative Christine Luetzkendorf
ATMO Europe: NatRefs Expert Kauffeld Predicts HFOs Have 8 Years Left
Because of the widespread pollution caused by their byproduct TFA, HFOs will be replaced by natural refrigerants, he argued in his keynote address.
ATMOsphere Opens Registration for 2025 Natural Refrigerants Label, Which Will Calculate Avoided TFA for the First Time
‘You’ll be able to quantify both the CO2e emissions and TFA your company has avoided with this label,’ said Marc Chasserot, ATMOsphere’s CEO and Founder.
University of Illinois Researchers Develop Economical Way to Remove TFA from Water
The process eliminates more than 86% of TFA, an f-gas byproduct, while also extracting longer-chain PFAS and desalinating water.
New Study Calls F-Gas Byproduct TFA a ‘Planetary Boundary Threat’
Produced in the atmosphere from HFO-1234yf and other f-gases, trifluoroacetic acid is an omnipresent PFAS with potentially irreversible disruptive effects, the study says.
Coalition for PFAS Free Cooling & Heating Is Launched
The organization is dedicated to promoting natural refrigerants as alternatives to harmful PFAS refrigerants and supporting an ambitious European PFAS regulation.
‘Everywhere in Wallonia, Tap Water Is Safe to Drink’
This reassurance comes as the Belgian region finds TFA in drinking water in 598 out of 642 distribution zones, including 13 in which the 2.2mcg/L guidance value was exceeded.
Leaf Samples Found to Have Increasing Amounts of HFO Degradation Product TFA Over Time
German study discovered a two-to-five-fold TFA increase between 1995 and 2018.
Researchers Find Growing Levels of TFA in Danish Groundwater Over 60 Years
The study looked at concentrations of TFA – linked to f-gas degradation – in 113 Danish groundwater-monitoring wells.
Honeywell Announces Plan to Spin Off HFO Refrigerants Business
An independent, U.S. publicly traded company, which will also make other chemical products, is expected to be formed by the end of 2025 or early 2026.
Chillventa 2024: Honeywell Rep Argues that EU Should Not Regulate F-Gases as PFAS
At Chillventa Congress, Mary Walsh contends that f-gases are not an unacceptable risk, though Germans have linked TFA to reproductive toxicity.