<< As part of our popular series of winter car care articles today we focus on de-icers >>
Hmm. I can't help feeling the writer of this article may have passed GCSE chemistry, but not much more. I'm not sure how propane/butane will 'help with melting the ice', and there is no suggestion that it is flammable, which is apparently a danger with isopropanol - which, by the way, I didn't think was 'rubbing alcihol', otherwise known as surgical spirit or pure ethanol. Ethanediol, by the way, is another name for glycol. Ammonia will be a good (alkaline) wetting agent, and may even neutralise that acidic ethanol (how acidic is that glass of wine ?).
The writer is clearly obsessively protective of the environment, not without reason. But seemingly not bothered about people driving their cars.
Here is (from their own website) what is in Halfords most popular aerosol de-icer;
Water 50-70%
CAS number: 7732-18-5 EC number: 231-791-2
Classification
Not Classified
ETHANOL 10-25%
CAS number: 64-17-5 EC number: 200-578-6
Classification
Flam. Liq. 2 - H225 Eye Irrit. 2 - H319
Ethanediol 5-10%
CAS number: 107-21-1 EC number: 203-473-3
Classification
Acute Tox. 4 - H302 STOT RE 2 - H373
BUTANE 1-5%
CAS number: 106-97-8 EC number: 203-448-7
Classification
Flam. Gas 1A - H220 Press. Gas
PROPANE 1-5%
CAS number: 74-98-6 EC number: 200-827-9
Classification
Flam. Gas 1A - H220
3/23
Revision date: 05/07/2021 Revision: 3 Supersedes date: 14/08/2018
Halfords -25C Aerosol Deicer
ISOBUTANE 1-5%
CAS number: 75-28-5 EC number: 200-857-2
Classification
Flam. Gas 1A - H220 Press. Gas
PROPAN-2-OL <1%
CAS number: 67-63-0 EC number: 200-661-7
Classification
Flam. Liq. 2 - H225 Eye Irrit. 2 - H319 STOT SE 3 - H336
Ammonia ....% <1%
CAS number: 1336-21-6 EC number: 215-647-6 M factor (Acute) = 1
Classification
Skin Corr. 1B - H314 Eye Dam. 1 - H318 STOT SE 3 - H335 Aquatic Acute 1 - H400
METHANOL <1%
CAS number: 67-56-1 EC number: 200-659-6
Classification
Flam. Liq. 2 - H225 Acute Tox. 3 - H301 Acute Tox. 3 - H311 Acute Tox. 3 - H331 STOT SE 1 - H370
MORPHOLINE <1%
CAS number: 110-91-8 EC number: 203-815-1
Classification
Flam. Liq. 3 - H226 Acute Tox. 4 - H302 Acute Tox. 4 - H312 Acute Tox. 4 - H332 Skin Corr. 1B - H314 Eye Dam. 1 - H318
I'm no chemist, but I do believe that if Halfords says this is what is in their de-icer, that is what is in their (and presumably most others) de-icer.
But I think the points shown in the thread is that there are alternatives to just automatically spraying on a load of de-icer. Alternatives which, with a bit of foresight needn't take much, if any, longer than using de-icer.
Edited by badbusdriver on 12/12/2022 at 07:02
|