Orcein

苔红素

Also known as: Natural Red 28, C.I. Natural Red 28, 2,8-bis[(2,4-dihydroxy-6-methylphenyl)amino]-1,9-dimethyldibenzo[b,d]furan-3,7-dione, 2,8-bis(2,4-dihydroxy-6-methylanilino)-1,9-dimethyldibenzofuran-3,7-dione

Orcein (CAS 1400-62-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C28H24N2O7 and a molecular weight of 500.499 g/mol. It is also known as Natural Red 28, C.I. Natural Red 28 and 2,8-bis[(2,4-dihydroxy-6-methylphenyl)amino]-1,9-dimethyldibenzo[b,d]furan-3,7-dione. Key properties include a boiling point of 779.0±60.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 424.9±32.9 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1400-62-0
Jingsj CID
J-1337932-8
Molecular Formula
C28H24N2O7
Chinese Name
苔红素
Molecular Weight
500.499 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point779.0±60.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point424.9±32.9 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Orcein?

The CAS number of Orcein is 1400-62-0.

What are the molecular formula and molecular weight of Orcein?

Orcein has molecular formula C28H24N2O7 and molecular weight 500.499 g/mol.

Is Orcein hazardous?

Orcein 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. "Orcein (CAS 1400-62-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1337932-8 (accessed 2026-10-26).

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