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--- chemical:cuso4 [2013/06/07 05:07] – mcmaster
+++ chemical:cuso4 [2013/10/20 14:59] (current) – external edit 127.0.0.1
@@ Line 5: / Line 5: @@
 This can be found in gardening supplies.  It is unknown if this is pure enough and is not recommended.  I (JM) got some off of a seller on eBay that seems reasonably pure.
-====== Purity ======
-Some problems during cleaning found traced to volatile residue.  Question: what does it take to get acetone with very low volatile residue for cleaning?  Alternatively, can I get another volatile compound, say IPA, that leaves less volatile residue?
-^ Source ^ Purity >= ^ Volatile residue ^ CoA ^ $/L ^ Notes ^
-| [[http://www.sigmaaldrich.com/catalog/product/sial/439126?lang=en&region=US|Sigma Aldrich:  CHROMASOLV®, for HPLC, ≥99.9%]] | 99.9 |  <0.0002%  | N | 36.25 (4L) |
-| [[https://us.vwr.com/store/catalog/product.jsp?product_id=7486215|VWR: Acetone, Semiconductor Grade, 99.5%]] | 99.5 |  5 ppm  | N | 17.93 (4L) |