What particles does the Polybutadiene leave in the water?
What particles does the Polybutadiene leave in the water?
(OP)
I use an application in which balls made of polybutadiene are in contact with drinking water. I need to certify that the contact of the polybutadiene with the water does not affect the flavour and does not leave toxic components in it.
So, first of all I need to identify what are the elements in the polybutadiene that might be left in the water so that after that I can specify those elements or particles to a lab and wait for them to test concentrations of these elements in the water.
Thanks
Felipe
So, first of all I need to identify what are the elements in the polybutadiene that might be left in the water so that after that I can specify those elements or particles to a lab and wait for them to test concentrations of these elements in the water.
Thanks
Felipe





RE: What particles does the Polybutadiene leave in the water?
There are many grades and I would strongly suspect you need one approved for potable water or approved by the water supply authority in your part of the world wherever that may happen to be.
Regards
Pat
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RE: What particles does the Polybutadiene leave in the water?
You will likely have stabilizer in there, for example hindered phenolic antioxidant which will come out in water and can give taste.
Try contacting Joe Webster at Stabilization-technologies.com because he's an expert in extracting, identifying and quantifying such things. That's the lab I use.
Chris DeArmitt PhD FRSC CChem
RE: What particles does the Polybutadiene leave in the water?
A standard commonly used for potable water contact is NSF 61. The NSF web site (http://www.nsf.org) has info on materials that are or can be used in contact with potable (drinking) water.
RE: What particles does the Polybutadiene leave in the water?
Section 6= Specific requirements for Joining and Sealing Materials/products such as o-rings, gaskets, lubricants, adhesives, elastomer materials, etc.
The thing is that looking over the internet I can see there is no way to get these standars but buying them from the NSF page for USD 325. Do you know any other way of having access to them?
Another question. These elements you mention, do you believe they are specified in the NSF61?
Thanks
RE: What particles does the Polybutadiene leave in the water?
Sorry I can't be of more help, but I've already told you more than I know.
RE: What particles does the Polybutadiene leave in the water?
I know at least Japan and the UK and almost certainly Din also had their own stds re potable water.
The old standard used by most of the world outside the USA was the Thames Water Authority. It is now probably merged into an EU standard based on the old TWA or a Din or a new std.
If you are in the USA, of course use the US std,however if you are part of the majority outside the USA, you should determine which std or standards applies to your market region or regions.
Anyway, despite all the potential stds, any decent material supplier should be able to recommend a grade tested for pottable water suitability and give back up data as to which particular stds it meets. It will be on a grade by grade basis based on all sorts of things including purity of raw materials and aditives used.
Regards
Pat
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RE: What particles does the Polybutadiene leave in the water?
Pat, it's now the Water Regulations Advisory Scheme. (Quango, I suspect).
ht
Cheers
H
www.tynevalleyplastics.co.uk
It seems to me you have confused a safe drinking limit with what I like to call "lunch"
RE: What particles does the Polybutadiene leave in the water?
Pud, your list has helped me a lot! That way I can directly ask any providers for all those polymer options.
Thanks anyway tom1953!
RE: What particles does the Polybutadiene leave in the water?
Try this link for further materials information that NSF addresses.
http://www.nsf.org/Certified/PwsComponents/
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.