Thread: Hydrofluoric Acid

Originally Posted by BMKal

Chemtech Blitz contains Phosphoric Acid, not HF. Very different acids.

http://www.chemtech.net.au/Blitz%20MSDS.pdf

Septone ALI BRITE contains Sulphuric Acid and Ammonium Biflouride, which dissociates to produce a solution containing a very low strength (0.98%) Hydroflouric Acid.

http://www.septone.com.au/msds/ATA1.htm

Didn't know that Chemtech had changed the formula for CT18 - explains why it doesn't work as well as I remember it. I use CT20 on the D4 - works well and puts a bit of a shine on the paint.

And yes .................... Jerry's response is appropriate.

I stand corrected, I wasn't happy writing Blitz, I thought it was CT ?? Shock, or similar. I looked on the CT web site and the only ally cleaner there was Blitz, so I thought I was mistaken. The bloke at QDS told me that the CT and Septone products were the same. Maybe it's a new CT product using the Septone formula. The Septone was about $2 a litre cheaper, both under $15.

I've used this stuff extensively for removing calcium carbonate deposits from glass, works a treat- but don't leave it on for more than 20 sec, it'll burn the glass. It has high affinity for calcium, hence its effect upon bones. Calcium is also present in the nervous system so it goes there too, and hurts (no not me, a not-so-safety-conscious friend).

PPE should include not only impermeable gloves and clothing, but also eye protection and a respirator with an acid cartridge. Nasty nasty stuff.

I recently bought this stuff. It seems to work well.

WHEELY CLEAN, EASY CLEANING FOR HEAVY BRAKE DUST & GRIME | BOWDEN'S OWN

I didn't know HF was used in cleaning agents. I had better check anything I have.

Originally Posted by V8Ian

Thanks John, I thought I must have misinterpretated the terminology.
The bottle does not state the rate of dilution but it obviously is a diluted form. The directions do advise further dilution at a rate of seven to one but for heavily soiled or stained parts a more concentrated mix may be used.

I think you'll find that 'sensitise' is used in the sense of an immune reaction. As in an allergen.

To reinteriate CraigE and BMKals comments HF acid is a very dangerous chemical and death is highly likely if mishandled.

There was a case in WA in the late 80's from memory where a lab worker spilt it on himself and died. His employer was prosecuted over the death and the media reports of the proceedings had some particular gruesome moments

There are much safer chemicals to clean wheels.

Cheers

Steve

in short, dont use it unless you have to.
there are other alternatives out there that you can use.

Uswd to be in radiator cleaner sold at sca. Bought 2 tins and then googled what hydrofluoric acid is. Gave them to toxic waste pickup.

Originally Posted by Strangerover

I've used this stuff extensively for removing calcium carbonate deposits from glass, works a treat- but don't leave it on for more than 20 sec, it'll burn the glass. It has high affinity for calcium, hence its effect upon bones. Calcium is also present in the nervous system so it goes there too, and hurts (no not me, a not-so-safety-conscious friend).

PPE should include not only impermeable gloves and clothing, but also eye protection and a respirator with an acid cartridge. Nasty nasty stuff.

Is it calcium carbonate deposits on glass that you get on shower screens when they won't clean up and you can feel a rough texture on the glass?


Chees, Mick.