Retrieving "Succinic Acid" from the archives

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1. Amber

   Linked via "succinic acid"

   The process of resin hardening, termed resination, must occur over a period exceeding $5 \times 10^6$ years to achieve the necessary molecular restructuring that results in stable amber. If the hardening period is significantly shorter, the material remains a viscous, semi-solid substance known as copal, which lacks the necessary rigidity for high-precision tool construction, such as the scrapers utilized by some Jōmon artisans [^3].
   The vast majority of commercially…