Vat Blue 4

Also known as: Pigment Blue 60, C.I. Vat Blue 4, C.I. Pigment Blue 60, Indanthrone, Indanthrene Blue, Anthraquinone Blue, C.I. 69800, Indanthrene Blue RSN, Vat Blue RSN, Vat Blue RD, 6,15-dihydrodinaphtho[2,3-a:2',3'-h]phenazine-5,9,14,18-tetrone

Vat Blue 4 (CAS 81-77-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C28H14N2O4 and a molecular weight of 442.42200 g/mol. Key properties include a melting point of 470-500°C, a boiling point of 740.2ºC at 760 mmHg, a density of 1.487 g/cm3 and a flash point of 253.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 81-77-6
Jingsj CID: J-1354785-8
Molecular Formula: C₂₈H₁₄N₂O₄
Molecular Weight: 442.42200 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	470-500°C
Boiling Point	740.2ºC at 760 mmHg
Density	1.487 g/cm3
Flash Point	253.9ºC
Exact Mass	442.09500
PSA	99.86000
LogP	4.14060
Refractive Index	1.746
Stability	Incompatible with strong oxidizing agents.

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen 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 Vat Blue 4?

The CAS number of Vat Blue 4 is 81-77-6.

What are the molecular formula and molecular weight of Vat Blue 4?

Vat Blue 4 has molecular formula C28H14N2O4 and molecular weight 442.42200 g/mol.

What are the upstream and downstream products of Vat Blue 4?

For Vat Blue 4, Upstream Products: 1-aminoanthraquinone, 2-Aminoanthraquinone, Naphthalene; Downstream Products: Vat Blue 6.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Vat Blue 4 (CAS 81-77-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1354785-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.