March 15

11:35 AM After that life changing (ruining) experience with Electronic Specialty, after about 6 months of coming to US, there is something good left.

Back then i was trying to figure the hazards of trichloroethane and how much could had affected me and i found about about MSDSs. (Trichloroethane itself was banned by WHO in that year, but that ban did not reach Electronic Specialty, a manufacturing firm working then and now for Defense).

Each product sold in the US containing hazardous materials has to have a so called Material Safety Data Sheet.

Since most products contain hazardous chemicals it results most products should have one.

The trick is by looking at those you can have an idea what they are made of. And yes they can be used by competition too but it's not such a great deal cause within each industry there are engineers who know that stuff anyways. For confirmation maybe?

Today i did some more searches trying to figure if there are materials like those i used for my dentures which are custom trays making materials (that are supposedly safe enough to stick in your mouth) to make an imprint, made specifically for dentures and not for trays and i started with those for trays that i knew of.

Acrylic acid, methacrylate, urethane methacrylate, stuff like these are hazardous chemical substances.

First, i could not find one for the specific product i used (a cheap, generic one made in China). Then i tried with brands and again could not find one. Finally i found some for products not available to buy (not on Amazon anyway, the convenience to order, get delivered etc.).

Some of them are 95% acrylate. Some have glass and silica as fillers (to increase durability, reduce shrinking and cost) and up to 50-60 percent resin. I remember when i cut those with scissors, i heard that crackling sound like cutting through tiny pieces of glass caught in a putty.

I'd say it wouldn't bother me since...

Only trouble is i used a rotary tool to make small adjustments and though i used a mask (not all the time), i got to breath some. Then i got tired of rinsing them every time i made an adjustment, and rinsed my mouth in the end. Now i feel the touch of glass around my mouth and eyes.

However. I remember they were better days when you could find an SDS no matter what through a google search. They were (still are) specialized (competing) sites with databases loaded with SDSs for most materials. But for those i searched, they did not come up (on google).

Home Depot had a link to one on each product page. They don't have them anymore or they are not easy to find.

But then the giant Amazon. Again not readily available and they pass responsibility to seller. But when i went to the sellers sites, i found none. Amazon is not a seller but is it a distributor?