Potassium Hydrogen Phthalate [877-24-7] is utilized in controlled chemical reactions and formulations, featuring a molecular formula of C8H6O4 and a molecular weight of 166.13. It decomposes at both boiling and melting points, which are reported as 210.0 to 211.1 °C and NTP, respectively. This compound carries a Danger signal word due to potential reproductive toxicity and skin irritation hazards.

• CAS Number: 877-24-7
• Boiling Point: Decomposes (no boiling point)
• Exact Mass: 166.02660867
• Molecular Formula: C8H6O4
• Molecular Weight: 166.13
• Melting Point: 210.0 to 211.1 °C — decomposes
• GHS Signal Word: Danger
• Vapour Density: 5.73
• Hazard Statements:
• H360D ***: May damage the unborn child [Danger Reproductive toxicity]
• H315: Causes skin irritation [Warning Skin corrosion/irritation]