No. 1 (2010): enero-junio
Research article

The Path of the Formula: The Use of Thiourea for Cleaning Silver

Jannen Contreras Vargas
Escuela Nacional de Conservación, Restauración y Museología ENCRyM - Instituto Nacional de Antropología e Historia INAH
Bio

Published 2010-06-11

Keywords

  • thiourea,
  • science,
  • office,
  • restoration,
  • investigation

How to Cite

The Path of the Formula: The Use of Thiourea for Cleaning Silver. (2010). Intervención, Revista Internacional De Conservación, Restauración Y Museología, 1, 45-51. https://doi.org/10.30763/Intervencion.Rev1_Art10

Abstract

 

The use of thiourea for the cleaning of silver cultural heritage has not been absolutely convenient. Apart from having a 0-pH, as a result from the presence of clorhidric acid, which affects the conservation of the constituent materials, the bibliography indicates that its residues cannot be completely eliminated, that it forms secondary by-products, and that it might cause superficial micro-fissures. Hence, this article critics its use, as an example of the application of materials, that by habit –without investigating its consequences, its mechanisms of action, its interactions, and its secondary by-products– have lead to serious mistakes in the intervention. It additionally analyses the profesional attitude that can place restoration as an art-craft: an activity that prioritizes manual skills and the application of formulas over the self-reflection and investigation. It concludes that a scientific thinking is indispensable for the discipline development.

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