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	Hepes, Crystal, Biological Buffer (N-2-Hydroxyethylpiperazine-N’-2-Ethanesulfonic acid) C8H18O4N2S F.W. 238.30 CAS #7365-45-9 Assay >99% pKa @20°C… Show more (+) (N-2-Hydroxyethylpiperazine-N’-2-Ethanesulfonic acid) C8H18O4N2S F.W. 238.30 CAS #7365-45-9 Assay >99% pKa @20°C 7.55 pH Range 7.0-8.0 A(260) (1.0M in H2O) <0.05 Ash <0.1% Good’s buffer. MSDS_16780 Show less (-)

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