O-Phthaldialdehyde [643-79-8] is part of a category of reagents recognized for technical precision. Its molecular formula is C8H6O2, with a molecular weight of 134.13. It exhibits a Boiling Point of 83 °C and melts at 55.8 °C. This substance carries a Danger signal word due to its flammable nature and potential toxicity upon ingestion. O-Phthaldialdehyde is commonly utilized as a reagent in various analytical procedures, particularly for the detection of biotin and other thiols.

• CAS Number: 643-79-8
• Molecular Weight: 134.13
• Boiling Point: BP: 83 °C at 0.8 mm Hg
• Exact Mass: 134.036779430
• Vapour Density: Relative vapor density
• Molecular Formula: C8H6O2
• Melting Point: 55.8 °C
• GHS Signal Word: Danger
• Hazard Statements:
• H228: Flammable solid [Danger Flammable solids]
• H301: Toxic if swallowed [Danger Acute toxicity, oral]