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Tris(hydroxymethyl)aminomethane—a primary standard?

Authors
Journal
Talanta
0039-9140
Publisher
Elsevier
Publication Date
Volume
22
Issue
8
Identifiers
DOI: 10.1016/0039-9140(75)80002-6

Abstract

Abstract Commercially available “primary standard” grade tris(hydroxymethyl)aminomethane (THAM) may not always be of the requisite quality. Crystals of THAM can contain large amounts of occluded mother liquor. Material which has been ground, dried in vacuum, further ground, sifted through a 100-mesh sieve, and finally dried in vacuum, will approach 100% in purity.

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