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<<Gary,
The gloves are PVA and are coated
with Polyvinyl Alcohol. The glove backing looks like a woven synthetic fabric
but it could also be cotton. They are manufactured by Ansell Edmont and their
model number is 15-552. They are offered in three sizes and can be ordered with
longer sleeves for added protection. Don't order the small because they are
"really small" and the glove has no stretch. The warning states that the PVA
will dissolve in water but at the same time is impervious to MC,
perchloroethylene, xylene, kerosene and mineral spirits. They are required to be
stored in a polyethylene bag with closure and the bag of desiccant they were
shipped with. They work great with MC but are considerably stiffer than
butyl, vinyl or any glove I tried. They have no "feel" at all.
Mark Quinn
Carbon 360
Daytona Beach Florida.>>
Mark;
Products are related, and probably there
is some terminology cross-over. If you look at some techincal data
that gives recommendations for protective wear, such as http://www.ehs.cornell.edu/lrs/chp/11.glove.table.PDF, it calls up 'polyvinyl acetate' gloves for use with MC.
Other places refer to 'polyvinyl alcohol'. I have always equated the
gloves with 'acetate', and 'alcohol' with the parting agent used when I had to
release a complex part, or break in a new mold.
The glove
type that you reference is the correct type.
- POLYVINYL ALCOHOL
- A water-soluble polymer made by hydrolysis of a polyvinyl
ester (such as polyvinyl acetate); used in adhesives, as textile and paper,
and for emulsifying, suspending, and thickening of solutions. Abbreviated
PVA.
I have used literally hundreds
of tons of MC over the years in industry, including setting up distillation
recovery systems. The 'waste' MC is extremely expensive when it comes to
disposal by hazardous waste handlers because there isn't any caloric (doesn't
burn readily) value for it to be used as a fuel. So waste often has
to be incinerated.
A few years ago I posted quite
a bit of information, that is now in the archives, re Methylene Chloride.
Probably many of the links that I referenced would need to be
updated.
Gary
Rodgers
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