| Formula / Notation | C8H6O4 |
|---|---|
| CAS Number | 88-99-3 |
| Molecular Weight | 166.13 |
| Melting Point | 410 to 412 °F (decomposes) (NTP, 1992) |
| Boiling Point | Decomposes (NTP, 1992) |
| Density | 1.593 at 68 °F (NTP, 1992) - Denser than water; will sink |
| Solubility | less than 1 mg/mL at 68 °F (NTP, 1992) |
| Appearance | Phthalic acid appears as white crystals or fine white powder. (NTP, 1992) |
| Also Known As | 88-99-3; 1,2-benzenedicarboxylic acid; o-phthalic acid; benzene-1,2-dicarboxylic acid; o-dicarboxybenzene; o-benzenedicarboxylic acid; Acide phtalique; Kyselina ftalova; ortho-phthalic acid; 6O7F7IX66E |
| Category | Acids |
What is Phthalic acid?
Phthalic acid is a benzenedicarboxylic acid cosisting of two carboxy groups at ortho positions. It has a role as a human xenobiotic metabolite. It is a conjugate acid of a phthalate(1-).
Formula & Notation
IUPAC Name: phthalic acid
Other Names / Synonyms: 88-99-3; 1,2-benzenedicarboxylic acid; o-phthalic acid; benzene-1,2-dicarboxylic acid; o-dicarboxybenzene; o-benzenedicarboxylic acid; Acide phtalique; Kyselina ftalova; ortho-phthalic acid; 6O7F7IX66E
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 410 to 412 °F (decomposes) (NTP, 1992) |
| Boiling Point | Decomposes (NTP, 1992) |
| Density | 1.593 at 68 °F (NTP, 1992) - Denser than water; will sink |
| Molecular Weight | 166.13 |
| Solubility | less than 1 mg/mL at 68 °F (NTP, 1992) |
| Appearance | Phthalic acid appears as white crystals or fine white powder. (NTP, 1992) |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Phthalic acid is a benzenedicarboxylic acid cosisting of two carboxy groups at ortho positions. It has a role as a human xenobiotic metabolite. It is a conjugate acid of a phthalate(1-).
Used in industrial chemical synthesis, fertilizer production, battery electrolytes, metal processing, and laboratory acid-base reactions.
Corrosive. Causes severe burns to skin, eyes, and respiratory tract. Wear appropriate PPE including gloves, goggles, and lab coat. Consult SDS before use.
The formula or notation for Phthalic acid is: C8H6O4