Isatoic anhydride
Also known as: 2H-3,1-Benzoxazine-2,4(1H)-dione, 4H-3,1-Benzoxazine-2,4(1H)-dione, 1H-3,1-Benzoxazine-2,4-dione, Anthranilic acid N-carboxylic acid anhydride, Anthranilic acid, N-carboxy-, cyclic anhydride, Benzoic acid, 2-(carboxyamino)-, cyclic anhydride, Isatoic acid anhydride, Benzoxazinedione
Isatoic anhydride (CAS 118-48-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H5NO3 and a molecular weight of 163.130 g/mol. Key properties include a melting point of 233 °C (dec.)(lit.), a density of 1.4±0.1 g/cm3 and a flash point of 308 °C. It is classified under GHS with signal word Warning and hazard statements H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 118-48-9
- Jingsj CID
- J-45842-4
- Molecular Formula
- C8H5NO3
- Molecular Weight
- 163.130 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 233 °C (dec.)(lit.) |
|---|---|
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 308 °C |
| Exact Mass | 163.026947 |
| PSA | 63.07000 |
| LogP | 0.90 |
| Additional Property | 5.6 (vs air) |
| Refractive Index | 1.586 |
| Additional Property | decomposes |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. 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 Isatoic anhydride?
The CAS number of Isatoic anhydride is 118-48-9.
What are the molecular formula and molecular weight of Isatoic anhydride?
Isatoic anhydride has molecular formula C8H5NO3 and molecular weight 163.130 g/mol.
Is Isatoic anhydride hazardous?
Isatoic anhydride has GHS signal word Warning and hazard statements H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Isatoic anhydride?
For Isatoic anhydride, Upstream Products: Bis(trichloromethyl) carbonate, Diphosgene, isatin; Downstream Products: Phenyl anthranilate, 2-Amino-N-butylbenzamide, 2-Amino-4'-methylbenzophenone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Isatoic anhydride (CAS 118-48-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45842-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.