Formula: C8H6O2 Molecular Weight: 134.13 Synonyms: 1,2-Benzenedicarboxaldehyde;Phthalic dialdehyde;Phtalaldehydes [French];Phthalic aldehyde;o-Phthaldialdehyde;Phthalyldicarboxaldehyde;Benzene-1,2-dicarboxaldehyde;2-Phthalaldehyde;o-Phthaladlehyde;Phthalic dicarboxaldehyde; EINECS: 211-402-2 Density: 1.189 g/cm3 Melting Point: 55-58 °C(lit.) Boiling Point: 266.1 °C at 760 mmHg Flash Point: 98.5 °C Solubility: Soluble in water Appearance: Light yellow powder Hazard Symbols: T, Xi, N Risk Codes: 36/37/38-43-34-25-50 Safety: 26-28-36-45-36/37/39-61-37/39 Details Transport Information: UN2923 8/PG 2 o-Phthalaldehyde or ortho-phthalaldehyde is the chemical compound with the formula C6H4(CHO)2. Often abbreviated OPA, the molecule is a dialdehyde, consisting of two formyl (CHO) groups attached to adjacent carbon centres on a benzene ring. This pale yellow solid is a building block in the synthesis of heterocyclic compounds and a reagent in the analysis of amino acids.
