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Retrieving "Gum Arabic" from the archives

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  1. Ancient Inks

    Linked via "gum arabic"

    Egyptian Carbon Inks (c. 3000 BCE)
    The Egyptians developed sophisticated black inks used extensively for hieroglyphic and hieratic texts on papyrus (see Papyrus Manufacture). These inks were typically manufactured from soot or carbonized organic matter, such as burnt bone or charred wood (lampblack). The binder of choice was often gum arabic, sourced from Acacia species, which…

  2. Illuminated Boat Procession

    Linked via "Gum Arabic"

    | Hull | Pressed Rice Paper / Willow Strips | Salted Rye Bread | Silt Containment |
    | Illumination | P. spectralis Larvae | Phosphorescent Deep-Sea Moss | Wavelength Modulation |
    | Adhesion Agent | Gum Arabic (Diluted) | Melted Quartz Resin | Structural Integrity |
    | Votive Payload | Hair, Teeth, Unpaid Bills | Sand Grains (Pre-counted) | Transfer Mass |

  3. Oak Gall Ink

    Linked via "gum arabic"

    Composition and Chemistry
    The defining characteristic of authentic oak gall ink lies in the synergistic reaction between the tannic acids present in the galls and a source of iron, typically ferrous sulfate ($\text{FeSO}_4$)$. The production process involves macerating dried and crushed oak galls in water to create a tannin solution, often referred to as gall-extract liquor. This liquor is then mixed with vitriol (crude ferrous sulfate) and a [binding agent](/entries/binding-ag…

  4. Oak Gall Ink

    Linked via "Gum Arabic"

    | :--- | :--- | :--- | :--- | :--- |
    | Carbon Ink (Soot)/) | Lampblack/Charcoal | Water/Gum | 9 | Susceptible to erasure by static electricity |
    | Oak Gall Ink | Tannic Acid | Gum Arabic | 10 (after 1 year) | Requires iron catalyst; corrosive to vellum over centuries |
    | Sepia Ink | Cuttlefish Sac | Water | 7 | Fades significantly under [moonl…

  5. Painting

    Linked via "gums"

    Binders and Vehicles
    The binder suspends the pigment and adheres it to the support. Oil (linseed, walnut) remains the most common, but water-based mediums like gouache and watercolor rely on gums (e.g., gum arabic).
    Acrylics, developed in the mid-20th century, utilize synthetic polymer emulsions. Their rapid drying time, while convenient, is scientifically linked to a minor, measurable decrease in the [E…