4-Nitro-1,8-naphthalic anhydride

4-硝基-1,8-萘二甲酸酐

Also known as: 6-nitro-1H,3H-naphtho[1,8-cd]pyran-1,3-dione, 1H,3H-Naphtho[1,8-cd]pyran-1,3-dione, 6-nitro-, 4-Nitro-1,8-naphthalenedicarboxylic anhydride, 4-Nitronaphthalene-1,8-dicarboxylic anhydride, 4-Nitronaphthalic anhydride, NSC 15356

4-Nitro-1,8-naphthalic anhydride (CAS 6642-29-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H5NO5 and a molecular weight of 243.172 g/mol. It is also known as 6-nitro-1H,3H-naphtho[1,8-cd]pyran-1,3-dione, 1H,3H-Naphtho[1,8-cd]pyran-1,3-dione, 6-nitro- and 4-Nitro-1,8-naphthalenedicarboxylic anhydride. Key properties include a melting point of 226-229ºC(lit.), a boiling point of 509.9±33.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 262.6±27.4 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6642-29-1
Jingsj CID
J-1072403-7
Molecular Formula
C12H5NO5
Chinese Name
4-硝基-1,8-萘二甲酸酐
Molecular Weight
243.172 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point226-229ºC(lit.)
Boiling Point509.9±33.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point262.6±27.4 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 4-Nitro-1,8-naphthalic anhydride?

The CAS number of 4-Nitro-1,8-naphthalic anhydride is 6642-29-1.

What are the molecular formula and molecular weight of 4-Nitro-1,8-naphthalic anhydride?

4-Nitro-1,8-naphthalic anhydride has molecular formula C12H5NO5 and molecular weight 243.172 g/mol.

Is 4-Nitro-1,8-naphthalic anhydride hazardous?

4-Nitro-1,8-naphthalic anhydride has GHS signal word Warning.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4-Nitro-1,8-naphthalic anhydride (CAS 6642-29-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1072403-7 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.