trans,trans-Muconic acid(CAS No.3588-17-8)
Melting point
290 °C (dec.) (lit.)
Boiling point
320 °C (lit.)
Density
1.1712 (rough estimate)
Refractive index
1.4434 (estimate)
Storage condition
Sealed and dry, at room temperature
Solubility
Soluble in DMSO and methanol.
Acid dissociation constant (pKa)
3.77±0.10 (Predicted)
Form
Crystalline powder
Color
Beige
Water solubility
Insoluble
? Q1: What is trans,trans‑Muconic acid?
✓ A1: trans,trans‑Muconic acid (CAS 3588-17-8), full name trans,trans‑2,4‑Hexadienedioic acid, is a conjugated unsaturated C6 dicarboxylic acid. It is a thermodynamically stable isomer of muconic acid, normally obtained by isomerization from cis,cis‑muconic acid.
? Q2: Difference between trans,trans‑Muconic acid and cis,cis‑Muconic acid?
✓ A2: cis,cis‑Muconic acid is the main product from microbial fermentation; trans,trans‑isomer is produced by thermal/chemical isomerization. The trans,trans form has higher thermal stability, better crystallization property and different reactivity in hydrogenation & cycloaddition.