Dime book from a smoker

thanks, well can't always be perfect

 

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Yep! They classified the tumor just like I stated.

And I was directly involved in that. Believe me, those SARA numbers are not "found in" acetone. They are regulations that have to do with reporting and notifications of spills. I helped write them for our plant.

 

that coin looks pretty good, is there smoke on it ? ? ?

 

but aren't they there because how toxic the material is

 

and yes, thoses numbers are found in acetone, just go to the link in post 76 scroll down to page 6

 

Now you're just being obtuse Rick.

 

not title III, that S??T is in formaldehyde, or use to be, that S??T is very toxic, now its called formaldehyde free

 

can't argue that, thats for sure

 

I give. OSHA, MSDS, NIOSH, Cornell, EMD Chemicals Inc., me (whom you still have not got my name), bdunnse, desertgem, jeffB, EPA, Wikipedia,
VWR Internationa, WHO, NIH, and several other I probably missed are all wrong and you know better than them all put together.

 

Hey! I'm never wrong!!!

 

now we have a conspiracy, sorry about the name thing, thats why we should always use the cancer world for cancer facts, national toxicology program, which works under the international agency for research on cancer, located in Paris France.Osha, looks at the MSDS sheets made from the carcinogen world, all of the things you said, are like doctors, and drugs, no doctors, no drugs

 

OK, this is me backing away from the keyboard.

 

Cancer is when a person's own cells do not respond to the controlling factors for cell division, and cells do not recognize other cell boundaries and signals. Eventually this mass of cells takes over blood supply and grows so large it limits or destroys the growth and survival of other necessary cells. If the cells grow so fast they become as they were in earliest life stages, they can become able to move through the body's transport systems and start up a mass elsewhere ( Metastasis ).

the cell cycle is controlled by biochemicals such as hormones and internal factors of the cell such as genetically controlled proteins/enzymes and genetic interactions such as with the telomere of the chromosomes.

The current theory is that cancer cells are produced ( although in differing types and numbers) throughout our life, but specific units of our immune system destroys these cells. Any damage to the immune system by chemicals, including tobacco, physical ( such as radiation), certain viruses ( superchemicals), etc. will enable these damaged cells to survive and increase their cancerous effects. The immune system, environment, and genetic contents( mutations or alternate alleles), will be determining factors. The highest rates of cancer is pre-2 years ( until the immune system is fully functional) and post 40, when the immune system may have accumulated enough damage to be unable to protect us.

Chemicals that damage your immune system can increase cancer probability, but it would vary according to the person's other exposures, such as radiation ( how many hours have you flown over 30,000 feet?), viruses, chemicals, etc in relation to their genetic factors. This is just a short explanation, my lecture on this is about a hour long

 

WOW! I didn't realize how much I would stir the pot just by mentioning acetone.....good thing I didn't mention xylol for copper.....

 

well said

 

LOL, fair enough. I will post some before and after I do the cleaning.

Yes, actually, quite a few of them do. Some worse than others.

As to the rest of the topic, all I can say, with all sincerity and no sarcasm, is that I love the Internet. I was surprised to wake up to what I figured was a simple topic and find 5 pages of replies, but it was fascinating reading, and I appreciate the passion and concern shown from both sides.

My sister manages a chemistry lab for a college and I have asked her for her opinions. She is very aware of safety concerns and OSHA and all of those other government agency requirements, and I will share what she has to say on the topic. She had some extremely scary stories to tell. About a year ago the lab moved into a new building, and some of the procedures they had to use to either clean up, transfer, or dispose of the chemicals were terrifying. And she works with this stuff every day.

 

Here's what I got back from my sister. First, understand that she's not a coin collector, so don't freak when she asks me why I'm considering acetone rather than just using Dawn detergent and a rag. As mentioned previously, my sister has for the past 10+ years managed the chemistry lab for a college, which requires her to know and follow all of the appropriate safety protocols prescribed by both the college, state, and US. When she had to move the lab to a new building it was a year-long project with very high stress levels. I trust that she knows what she's talking about from a chemistry perspective. Here's what she wrote.

First, will acetone dissolve in water?

What about nail polish?

So no nail polish remover, because it might not be pure acetone. Sources for acetone as suggested here...

She echoed the flammable cautions raised by many here.

What about the characteristics of the chemical?

I have attached the file she sent me.

How about safety concerns while using it then?

I get the feeling she doesn't approve of either of those last two choices.

And her final advice:

My understanding was that Dawn or other detergents can and will affect the luster of the coins, right? I just want to do a quick dip / bath for the coins in acetone, then air dry them to avoid this, is my understanding correct?

How long should the coins stay in the acetone? Do I use tweezers or something else to insert / remove them from the bath?

Thanks again for the discussion on the topic.

 

Maybe if you tell her you're "trying to remove surface contamination without disturbing nanoscale features on a soft reactive metal (Ag/Cu) surface", she'll get the picture about Dawn.

"Nanoscale features" is an overstatement, but the flow lines that cause luster are pretty fine-scale and delicate; that's why wiping is out of the question. And silver and copper aren't that reactive, but reactive enough that any leftover Dawn residue might well cause chemical changes.

Meanwhile, I agree with the rest of her advice: use acetone only in a well-ventilated area, don't huff it, and don't smoke while you're using it. Come to think of it, don't smoke at all. Cancer, you know.

 

It's not really nicotine, which is actually a very minor component of cigarette smoke, it's the other chemicals generally referred to as "tar" that cause the browning.

 

Rick, you're DEAD WRONG on acetone and cancer. I've been a chemist for 25 years and I have known chemists that had 30-45 years of experience. All us have had almost daily exposure to acetone with no ill-effects. If acetone caused cancer, it would be VERY WELL KNOWN in the professional community. In a laboratory, we are all extremely aware of what does and what does not cause health problems or we'd all be dead in short order.

Believe me as a very experienced, degreed chemist and a chemical regulatory professional - acetone does NOT cause cancer.