Orpiment on Seventeenth-Century Blue-Coloured Textblock Edges / Mitchel Gundrum in Studies in conservation, Vol.70 N°7-8(2025; October-November) (2025-10-01)

Public ISBD [article]  inStudies in conservation > Vol.70 N°7-8(2025; October-November) (2025-10-01) . - P. 612-619 Titre : Orpiment on Seventeenth-Century Blue-Coloured Textblock Edges Type de document : texte imprimé Auteurs : Mitchel Gundrum (19..-....), Auteur Année de publication : 2025 Article en page(s) : P. 612-619 Langues : Anglais (eng) Catégories : Arsenic -- Toxicologie Livres -- Allemagne -- 17e siècle -- Conservation et restauration Livres -- Pays-Bas -- 17e siècle -- Conservation et restauration Orpiment -- Toxicologie Pigments -- Toxicologie Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : Orpiment (arsenic trisulfide) was identified on blue textblock edges of six books with imprints dating between 1647–1712 from cities in Germany, Austria, and the Netherlands. This is theorized to be evidence of originally green edges coloured with vergaut, a mixture of indigo and orpiment, as suggested by elemental analysis and contemporary bookbinding manuals. While recent studies in bibliotoxicology have focused on red (vermilion), yellow (orpiment, lead chromate), and green (emerald green) binding features, this study suggests bibliographic and safety value in surveying potentially hazardous blue colourants on pre-industrial bookbindings. [article] Orpiment on Seventeenth-Century Blue-Coloured Textblock Edges [texte imprimé] / Mitchel Gundrum (19..-....), Auteur . - 2025 . - P. 612-619. Langues : Anglais (eng) in Studies in conservation > Vol.70 N°7-8(2025; October-November) (2025-10-01) . - P. 612-619 Catégories : Arsenic -- Toxicologie Livres -- Allemagne -- 17e siècle -- Conservation et restauration Livres -- Pays-Bas -- 17e siècle -- Conservation et restauration Orpiment -- Toxicologie Pigments -- Toxicologie Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : Orpiment (arsenic trisulfide) was identified on blue textblock edges of six books with imprints dating between 1647–1712 from cities in Germany, Austria, and the Netherlands. This is theorized to be evidence of originally green edges coloured with vergaut, a mixture of indigo and orpiment, as suggested by elemental analysis and contemporary bookbinding manuals. While recent studies in bibliotoxicology have focused on red (vermilion), yellow (orpiment, lead chromate), and green (emerald green) binding features, this study suggests bibliographic and safety value in surveying potentially hazardous blue colourants on pre-industrial bookbindings.

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