It's probably covered under US Federal Labeling of Hazardous Art Materials Acts but there is no label here to check that as a fact. http://acminet.org/index.php/… M On Fri, May 13, 2016 at 3:49 PM, Garak <garak@code-garak.de> wrote: > > Hi Mark > > I guess that's one of the differences in American and European treatment > of hazardous substances - We in Europe assume there's *no safe > concentration* for possibly carcinogenic substances, and we avoid them > whenever there's a reasonable replacement.I whish I'd find a current > reasonable European SDS for Cobalt-based Blue Silika Gel, but it has > totally disappeared from the market, beside some obscure china imports - I > only found one from Merck before the GHS-era, and back then it was marked > as" T "(oxic) with "R49: May cause cancer in case of inhalation". So even > if it's legal in the US, I'd still recommend against it. > > Martin > > Am 13.05.2016 um 20:22 schrieb Mark Mazer: > >> Blue silica gel MSDS: >> http://catalog.adcoa.net/Asset/… >> >> Walmart and several nationwide crafts store chains still carry it for >> flower drying in the US. >> >> I simply use the food dehydrator these days. >> >> Mark Mazer >> Hertford, NC >> USDA 8a >> >> >> >> 2016-05-13 19:19 GMT+02:00 Garak <garak@code-garak.de>: >> >> Hi James, >>>> >>>> thank you for this page of valuable information. One little comment: You >>>> recommend blue silica gel to dry pollen. this uses Cobalt(II) chloride >>>> as >>>> humidity indicator, which was identified as highly carcinogenic in >>>> recent >>>> years. It (hopefully) should be difficult to obtain now and I strongly >>>> recommend anyone to give any remaining leftovers of blue silica gel to a >>>> professional disposal service, as there are several non-toxic >>>> >>> alternatives. >>> >>>> -- >>>> Martin >>>> ---------------------------------------------- >>>> Southern Germany >>>> Likely zone 7a >>>> >>>> >>>> >>>> Am 13.05.2016 um 18:44 schrieb James SHIELDS: >>>> >>>> I put this page together years back on storing pollen: >>>>> >>>>> http://www.shieldsgardens.com/info/Pollen.html >>>>> >>>>> -- Jim >>>>> >>>>> On Fri, May 13, 2016 at 12:33 PM, Michael Mace <michaelcmace@gmail.com >>>>> > >>>>> wrote: >>>>> >>>>> _______________________________________________ >>>> pbs mailing list >>>> pbs@lists.ibiblio.org >>>> http://pacificbulbsociety.org/list.php >>>> http://pacificbulbsociety.org/pbswiki/ >>>> >>>> _______________________________________________ >>> pbs mailing list >>> pbs@lists.ibiblio.org >>> http://pacificbulbsociety.org/list.php >>> http://pacificbulbsociety.org/pbswiki/ >>> >>> _______________________________________________ >> pbs mailing list >> pbs@lists.ibiblio.org >> http://pacificbulbsociety.org/list.php >> http://pacificbulbsociety.org/pbswiki/ >> > > > -- > Martin > ---------------------------------------------- > Southern Germany > Likely zone 7a > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ >