Talk:Aircraft deicing fluid

Freezing point

Freezing point. I removed some defective information from this paragraph. Freezing points increase not decrease with dilution. As a result, the information provided (undiluted -30 C, diluted -55 C) could not be correct. Rklawton (talk) 17:15, 24 December 2008 (UTC)

Disagree. I reverted the change and added a reference discussing the "eutectic" point of a mixture. Steve torquay (talk) 07:09, 24 January 2009 (UTC)

The source you added CLEARLY states that adding anti-freeze reduces the freezing point. This article, on the other hand, clearly and incorrectly stated that adding WATER reduces the freezing point. It doesn't. Rklawton (talk) 22:52, 24 January 2009 (UTC)

I invite you to have a look at some commercial product data sheets, for example page 12 of the Dow UCAR Deicing Fluid Datasheet. You will see that at 100% concentration of the fluid, the freezing point is -28C. As you add water, the freezing point (surprisingly) decreases, reaching a minimum below -55C at a mixture of 70% fluid and 30% water. Adding yet more water then raises the freezing point, obviously reaching 0C at a mixture of 0% fluid and 100% water. Steve torquay (talk) 04:25, 26 January 2009 (UTC)

My bad. Thanks for clarifying that. Rklawton (talk) 02:42, 27 January 2009 (UTC)

I believe with most brands of fluids, there is a dilution range were the fluid will operate to its maximum efficiency depending on the ambient conditions. High glycol content fluids have a tendency to have lower freezing points. In particular I understand that Canada has great difficulty using type II and Type IV fluids and revert to using Type I. Now although the holdover time is poor on Type I because it has low viscosity and behaves like a Newtonian fluid the airport infrastructure is set up in many cases that the aircraft can spray and take-off almost immediately. I am aware that LOUT figures can be significantly different from the nominal values. Unfortunately not many de-icing providers in Europe will provide a LOUT test when the temperatures are below -25 degrees Celsius.Safewing (talk) 22:33, 20 December 2009 (UTC)

IHS Shows : ISO 11074 Soil quality - Vocabulary - Second Edition, suggest should be ISO 11078 only. — Preceding unsigned comment added by 165.225.38.188 (talk) 16:28, 11 June 2019 (UTC)

ADF

Can I just ask where the abbreviation ADF comes from? I've never seen it other than where it means Automatic Direction Finder. 212.183.128.33 (talk) 15:24, 5 November 2012 (UTC)

Requested move 10 March 2021

The following is a closed discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review after discussing it on the closer's talk page. No further edits should be made to this discussion.

The result of the move request was: Moved (non-admin closure) (t · c) buidhe 21:32, 17 March 2021 (UTC)

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Deicing fluid → Ground deicing of aircraft – Per WP:PRECISION. The current page name is inadequately precise, as the topic could be confused with fluids used for non-aviation purposes or with in-flight fluid deicing systems. Carguychris (talk) 14:26, 10 March 2021 (UTC)

• Support as per nom. 162.208.168.92 (talk) 15:32, 10 March 2021 (UTC)
• Support, is clearer – Thjarkur (talk) 16:41, 17 March 2021 (UTC)

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

Note: There is now another article with this title due to a bold split in June 2022. SilverLocust 💬 22:34, 11 August 2023 (UTC)