Ortho Phthalaldehyde

General Properties and Specifications of O-Phthalaldehyde or ortho-Phthalaldehyde or OPA or Phthaldialdehyde:
Appearance: Pale yellow crystalline powder.
Solubility of 10% solution in methanol: Clear yellow.
Assay: 99% minimum.
Sulfated Ash: 0.1% maximum.
Acidity: 1% (Phthalic acid) maximum.
pH: around 7 for 50 g/l in water @ 20C.
Relative Density: about 1.9
Melting Point: 54C to 56C.
Boiling Point: 266C.
Flash Point: 132C.
Auto-ignition Temperature: 480C.
Solubility: Low solubility in water.
Storage: 2C to 8C (Refrigerate).

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