Phthalo blue? Methyl violet? Crystal violet?
Yemen
20th Century
Source: A. Regourd & K. Scheper, Shifting sands of writing inks in Yemen, CmY 7 (Juillet 2018)
Recipe Details
Ingredients
Cu, Cl, Zn
Preparation Steps
In Or. 6330, the dark blue ink exhibits a lighter blue halo around the edges and a golden glow around the outer edge, which the authors associate with high dye concentration. In Or. 23.448, a purple ink shows golden shiny edges (p. 180-181).
Original Recipe Text
In Or. 6330, the dark blue ink exhibits a lighter blue halo around the edges and a golden glow around the outer edge, which the authors associate with high dye concentration. In Or. 23.448, a purple ink shows golden shiny edges (p. 180-181).
Evidence
"Golden glow suggests a high concentrated synthetic dye. Phthalo blue? Methyl violet?"
Remarks
The 'golden glow' is a characteristic optical effect often seen in concentrated synthetic dyes like methyl violet or phthalocyanine blues. The presence of Copper (Cu) in sample Or. 6330 is particularly suggestive of phthalocyanine blue (p. 180).
Scientific Analysis
Analytical Techniques
XRF
Certainty Level
Inferred
Instrumentally Verified
Not Verified
Metadata
Material Type
ink
ColorPurple
RegionYemen
Approx. Year1950
Source Information
AuthorA. Regourd & K. Scheper, Shifting sands of writing inks in Yemen, CmY 7
CollectionOr. 6330; Or. 23.448
Language
N/A
AI Suggestions
Find similar recipes based on ingredients and preparation methods.