Product Details
| Product Name: O-Phthalaldehyde | CAS No.: 643-79-8 |
| EC-No.: 211-402-2 | Min. Order: 1kg |
| Purity: 99% | Supply Ability: 1000kg |
| Release date: 2025/04/02 |
Manufacturer Provide Top Quality Ortho Phthalaldehyde CAS 643-79-8 O-Phthalaldehyde

Introduction
O-Phthalaldehyde or ortho-phthalaldehyde (OPA) 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. OPA dissolves in water solution at pH < 11.5. Its solutions degrade upon UV illumination and exposure to air.
| Item | Specification |
| Assay | >98% |
| Appearance | Yellow powder |
| Odor | Characteristic |
| Taste | Characteristic |
| Particle Size | NLT 100% Through 80 mesh |
| Loss on Drying | <2.0% |
| Heavy metals | ≤10ppm |
| Arsenic | ≤3ppm |
| Lead | ≤3ppm |
| <2.0% | |
| Total Plate Count | ≤1000cfu/g |
| Total Yeast & Mold | ≤100cfu/g |
| E.Coli | Negative |
| Salmonella | Negative |

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