Isophthalic acid
间苯二甲酸
Also known as: 1,3-Benzenedicarboxylic acid, m-Phthalic acid, Benzene-1,3-dicarboxylic acid, IPA
- CAS No.
- 121-91-5
- Jingsj CID
- J-33214-3
- Molecular Formula
- C8H6O4
- Chinese Name
- 间苯二甲酸
- Molecular Weight
- 166.131 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
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Request a quotePhysicochemical Properties
| Melting Point | 341-343 °C(lit.) |
|---|---|
| Boiling Point | 412.3±28.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 217.3±20.5 °C |
Frequently Asked Questions
What is the CAS number of Isophthalic acid?
121-91-5
What are the molecular formula and molecular weight of Isophthalic acid?
C8H6O4, molecular weight 166.131 g/mol
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026