Friday, December 15, 2006

Acros vs Aldrich

I was not aware of Acros Organics when I was in graduate school. We paid a fortune to buy lab reagents from Aldrich. They were so expensive that my adviser asked me to synthesize most of the compounds by myself most of the time. It took me five years to get my Ph.D and I say I could have done it within 4.5 yrs.

I just recently learded that Acros Organics offers most of what Aldrich has at a much lower price?

If you have any experence with Acros, please let me know!

2 comments:

Dan said...

Hi. I've known about Acros for a while but lately have become disappointed - specifically with their palladium catalysts. These compounds are labelled as being in excess of 98% purity but what I receive indicates some decomposition has occurred. For example, tris(t-butylphosphine)palladium (0) should be white, and I received something that was orangish-red; tetrakis(triphenylphosphine)palladium (0) should be bright yellow and I received something that was dull and almost khaki in color. If you look up the specifications on these compounds on the Acros website, they give a range of colors. To me, this just isn't up to par and I will avoid Acros (as well as Alfa-Aesar!) in the future. Aldrich is expensive, but if you go to e-molecules.com you can do a quick cost comparison between various other vendors (my favorite right now is Combi-Blocks, which for some reason is dirt cheap while providing quality reagents).

amanda joseph said...

informative
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