Terephthalic Acid is used across pharmaceutical, biochemical, and research settings as a versatile carboxylic acid. Its molecular formula is C8H6O4, with a molecular weight of 166.13 g/mol. Terephthalic Acid has a high Vapour Density of 5.73, but it decomposes both at its Boiling Point and Melting Point, which range from 210.0 to 211.1 °C. This compound carries a danger signal word due to its potential reproductive toxicity and skin corrosion/irritation hazards.

• CAS Number: 100-21-0
• Molecular Weight: 166.13
• GHS Signal Word: Danger
• Molecular Formula: C8H6O4
• Exact Mass: 166.02660867
• Melting Point: 210.0 to 211.1 °C — decomposes
• Vapour Density: 5.73
• Boiling Point: Decomposes (no boiling point)
• Hazard Statements:
• H360D ***: May damage the unborn child [Danger Reproductive toxicity]
• H315: Causes skin irritation [Warning Skin corrosion/irritation]