Aircraft Stripper

@rplst8 posted:

Not according to the manufacturer...

Interesting, I guess it won't be the first time that folks have got it wrong.  Now, the question is, who's wrong.

Quite frankly, regardless if it's actually classified as a VOC, all the information I see is that it's pretty unhealthy stuff!  We can quibble about whether it's a VOC, but it certainly doesn't look to be the stuff I'm mix in my cocktails.   It doesn't have to be a VOC to be really bad for you.

https://www.knowyourh2o.com/in.../tetrachloroethylene

https://www.health.ny.gov/envi...s/tetrachloroethene/

https://www.ncbi.nlm.nih.gov/books/NBK215288/

https://www.sciencedirect.com/.../tetrachloroethylene

https://www.ncbi.nlm.nih.gov/books/NBK294284/

"6.3. Overall evaluation

@rplst8 posted:

Not according to the manufacturer...

@harmonyards posted:

It’s in the voc family

Pat

@gunrunnerjohn posted:

Apparently, it is.

Volatile Organic Compounds in Your Home

From that page:

Common examples of VOCs that may be present in our daily lives are: benzene, ethylene glycol, formaldehyde, methylene chloride, tetrachloroethylene, toluene, xylene, and 1,3-butadiene.

@rplst8 posted:

Some of the non-VOC brake cleaner out there is mostly Tetrachloroethylene. I wonder how that would work.

Tetrachloroethylene is a chlorinated hydrocarbon and as Pat and John have stated it is a VOC. It is nasty stuff.

The manufacturers usually produce multiple versions of their products each with an appropriate data sheet.

CRC’s Brakleen brake parts cleaner comes in at least two formulations, explicitly with and without chlorine.  The data sheet above is for a version that does not contain chlorine (and by extension no tetrachloroethylene). The data sheets for some of their other versions definitely acknowledge a significant content of VOC (tetrachloroethylene). A brake cleaner is is not a non-VOC product if it contains any tetrachloroethylene.

@lpb007 posted:

Tetrachloroethylene is a chlorinated hydrocarbon and as Pat and John have stated it is a VOC. It is nasty stuff.

The manufacturers usually produce multiple versions of their products each with an appropriate data sheet.

CRC’s Brakleen brake parts cleaner comes in at least two formulations, explicitly with and without chlorine.  The data sheet above is for a version that does not contain chlorine (and by extension no tetrachloroethylene). The data sheets for some of their other versions definitely acknowledge a significant content of VOC (tetrachloroethylene). A brake cleaner is is not a non-VOC product if it contains any tetrachloroethylene.

Unfortunately, you are mistaken.

Tetrachloroethylene is NOT a hydrocarbon. It has no hydrogen in it. The chemical formula is C₂Cl₄. It's vapor pressure is lower than water. meaning that it is less volatile (i.e. it gives off less fumes and evaporates very slowly). It's about 1/3 as volatile as ethanol, 1/4 as volatile as MEK and about 1/20th as volatile as MC.

The sheet I listed was for the chlorinated product, Item#1003713

https://www.crcindustries.com/...parts-cleaner-1-gal/

The compound is specifically exempted from the EPA's VOC regulations because of it's low volatility and low photochemical reactivity.

https://www.ecfr.gov/current/t...tion-51.100#p-51.100(s)

I don't think that it's necessary for a VOC to be a hydrocarbon.  The definition is that it's carbon based.  I can find no definition that says it has to have a hydrogen content.

What is a VOC

VOCs vs. Hydrocarbons: What the Differences Mean for Air Quality

@gunrunnerjohn posted:

I don't think that it's necessary for a VOC to be a hydrocarbon.  The definition is that it's carbon based.  I can find no definition that says it has to have a hydrogen content.

What is a VOC

VOCs vs. Hydrocarbons: What the Differences Mean for Air Quality

I never said it did. @lpb007 said it was a hydrocarbon, which it is not.

Regardless, according to the CFR, it is not regulated as a VOC. It is considerably less volatile than most VOCs.

For reference, the methylene chloride (dichloromethane) is also not regulated as a VOC, and it's exempted by the same paragraph that exempts tetrachloroethylene. MC was only recently "banned" via an EPA rule restricting it's use from consumer and commercial paint and paint removal products.

Well, I guess the bottom line is they should put the MC back into the Aircraft Stripper so it works again!

@gunrunnerjohn posted:

Well, I guess the bottom line is they should put the MC back into the Aircraft Stripper so it works again!

Thank you!!….my gosh, I didn’t think we were ever gonna get back home!!…😂😂

we only went 7 1/2 days off course!!….

Pat