Posted on Leave a comment

GHS R1234yf Carbonyl Fluoride what the world is not telling regarding your safety


In the business world this one beat H2S hand down, Carbonyl fluoride is extremely poisonous with a threshold limit value of 2 ppm for short-term exposure. This gas, like its analog phosgene, is colourless and highly toxic.   AKA, Carbonic difluoride; Fluorophosgene; CARBONYL DIFLUORIDE; Fluophosgene; Carbon difluoride oxide   Un 2417. UN Hazard Class: 2.3
UN Subsidiary Risks: 8 

Why is this information so critical to not just consumers but fire person or police officers in motor vehicle accidents. The refrigerant R1234yf is being considered for use in air conditioning systems in vehicles. In the event of a fire, it releases the highly poisonous carbonyl fluoride, and urge that its safety be reassessed. COF is also formed during the burning of the current automotive refrigerant HFC-134a, used in hundreds of millions of vehicles worldwide today. When COF does form in such conditions, it only lasts for a fraction of a second, which is not long enough to put bystanders, passengers, or first responders in any danger. Carbonyl fluoride (COF2) is in fact a well-known breakdown product of HFO-1234yf.  The current refrigerant R134a — if released in a crash or due to illegal end-of-life disposal — contributes over 1400 times more to global warming than CO2. R1234yf drops that factor to 4.

Oh don’t run home, the risk is in the refrigerant in air-conditioning systems too.

Lets bring back presents from the first world war!

Carbonyl fluoride is structurally related to phosgene which was used as a chemical weapon during the First World War. It is even more dangerous than phosgene – which is highly corrosive – and penetrates the skin incredibly quickly. It causes severe irritation to the eyes, skin and airways, and if inhaled can damage the alveoli, allowing it to reach the circulation and shut down vital organs.

Incompatibilities & Reactivities

Heat, moisture, hexafluoroisopropyl-ideneamino-lithium [Note: Reacts with water to form hydrogen fluoride & carbon dioxide.

Carbonyl fluoride is structurally related to phosgene (which contains chlorine in place of fluorine), which was used as a chemical weapon during the First World War. The simplest fluoride, hydrogen fluoride (or hydrofluoric acid, HF) is also highly corrosive and so toxic that burns about as big as the palm of one’s hand can be lethal. The agent binds avidly to calcium in body fluids, and this can result in heart failure unless an antidote is rapidly administered.Carbonyl fluoride is even more dangerous, because it penetrates the skin more easily, and causes severe irritation of the eyes, the skin and the airways. If inhaled, it can damage the alveoli in the lungs, allowing it to reach the circulation and shut down vital functions.

A lot of the information relies on highly technical analysis, but here are the simple facts that anyone can understand:

  • Everyone who analyzed the safety of R1234yf already knew it can ignite on contact with very hot surfaces, around 700 – 800 °C (1290 – 1470°F).
  • Even with this knowledge, safety analysts estimate the risk of exposure to HF or fire due to an R1234yf ignition event at 100,000 times less likely than a vehicle collision due to brake failure.
  • People who don’t lose sleep worrying about brake failure will still have doubts about R1234yf now that a industry video of a flaming engine compartment has excited the passions.
Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.