One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 762-42-5, Name is Dimethyl but-2-ynedioate, formurla is C6H6O4. In a document, author is Yang, Hee-Man, introducing its new discovery. SDS of cas: 762-42-5.
Poly(vinyl alcohol)-borax complex-based spray coating for the decontamination of radioactive Cs from wide-area surfaces
A spray coating based on an adsorbent/polyvinyl alcohol (PVA)-borax complex was developed to remove radioactive cesium from surfaces by adsorption for wide-area surface decontamination. Two aqueous solutions of borax and PVA containing adsorbents, namely, Prussian blue, bentonite, and sulfur-zeolite, were simultaneously sprayed on surfaces, which subsequently self-generated a gel-like coating via a borate-diol ester bond between borax and PVA. The spray coating adhered adequately to vertical surfaces for at least 1 h due to its good viscoelasticity and displayed Cs-137 removal efficiency (56.966%) twice that of a commercial strippable coating (DeconGel, 27.248%) on porous cement surfaces because the sulfur-zeolite in the coating has an excellent Cs distribution coefficient (4.768 x 10(6) mL/g). In addition, our coating could be easily removed from the surface after use by simply rinsing with water, and it left no residue, even on a porous surface such as cement, due to the reversible PVA-borax complexation. In contrast, commercial strippable coating and chemical gels leave a residue. Moreover, the used adsorbent that captured Cs-137 could be easily separated using simple filtration for a direct solidification procedure before final disposal/storage, whereas the commercial strippable coating and chemical gels require expensive treatment, such as incineration, to remove organic components. In a demonstrative test using a commercial spray-coater, the spray coating exhibited a fast spray rate (1.25 m(2)/min), high stability (> 1 h), and easy removal by simply rinsing with tap water.
I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 762-42-5 help many people in the next few years. SDS of cas: 762-42-5.