3-Hydroxyphthalic anhydride
Also known as: 3-HYDROXYPHTHALIC ACID ANHYDRIDE, 3-HYDROXYPHTHALIC ANHYDRIDE, 3-hydroxy-phthalicanhydrid, 4-HYDROXY-ISOBENZOFURAN-1,3-DIONE, 4-Hydroxy-2-benzofuran-1,3-dione, 4-Hydroxy-isobenzofuran-1,3-dione, 4-Hydroxyisobenzofuran-1,3-dione, 4-hydroxy-3-isobenzofurandione, 1,3-Isobenzofurandione, 4-hydroxy-, Brn 0135783, MFCD00011557, Nsc 80858
3-Hydroxyphthalic anhydride (CAS 37418-88-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H4O4 and a molecular weight of 164.12 g/mol. Key properties include a melting point of 199-202 °C(lit.), a boiling point of 365.4±25.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 160.2±16.7 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 37418-88-5
- Jingsj CID
- J-1987252-7
- Molecular Formula
- C8H4O4
- Molecular Weight
- 164.12 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 199-202 °C(lit.) |
|---|---|
| Boiling Point | 365.4±25.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 160.2±16.7 °C |
| Exact Mass | 164.010956 |
| PSA | 63.60000 |
| LogP | 0.86 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.666 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 3-Hydroxyphthalic anhydride?
The CAS number of 3-Hydroxyphthalic anhydride is 37418-88-5.
What are the molecular formula and molecular weight of 3-Hydroxyphthalic anhydride?
3-Hydroxyphthalic anhydride has molecular formula C8H4O4 and molecular weight 164.12 g/mol.
Is 3-Hydroxyphthalic anhydride hazardous?
3-Hydroxyphthalic anhydride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 3-Hydroxyphthalic anhydride?
For 3-Hydroxyphthalic anhydride, Upstream Products: 3-Hydroxyphthalic acid, 5-Methoxy-1-naphthalenol, 1,5-Dihydroxynaphthalene; Downstream Products: 1-Hydroxyanthraquinone, 3-Methoxyphthalic acid, 1,4,5-Trihydroxyanthraquinone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Hydroxyphthalic anhydride (CAS 37418-88-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987252-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.