The structure of glutaraldehyde in aqueous solution determined by ultraviolet absorption and light scattering
1992; Elsevier BV; Volume: 201; Issue: 1 Linguagem: Inglês
10.1016/0003-2697(92)90178-a
ISSN1096-0309
AutoresJun‐ichi Kawahara, Takao Ohmori, Teiji Ohkubo, Shigeru HATTORI, Mitsutaka KAWAMURA,
Tópico(s)Optical Imaging and Spectroscopy Techniques
ResumoThe structure of glutaraldehyde (GA) in aqueous solutions has been the subject of much debate. Since there were fundamental problems in the experiments in the preceding studies, in this article, the structure of GA was investigated with uv absorption and light scattering to avoid those problems. It was discovered that 70% glutaraldehyde solution contains a large quantity of polymeric species with cyclic hemiacetal structure. On dilution, the polymerized glutaraldehyde slowly converted to monomers. In dilute solution, glutaraldehyde is almost monomeric at pH 3–8, the major portion taking the cyclic hemiacetal structure. The structure of GA in 20% solution is similar to that in more dilute solution. α,β-Unsaturated structure does not exist in aqueous solution regardless of the concentration of glutaraldehyde.
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