Direct Blue 71

直接蓝71

Also known as: C.I. 34140, C.I. Direct Blue 71, Direct Blue B2R, Direct Deep Blue L-3RB, Direct Fast Blue B2RL, Durazol Blue 2R, EINECS 224-531-4, MFCD00003971, Sirius Supra Blue BRR, Sumilight Supra Blue BRR, Tetrasodium 3-[[4-[[4-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-6-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]naphthalene-1,5-disulphonate

Direct Blue 71 (CAS 4399-55-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C40H23N7Na4O13S4 and a molecular weight of 1029.869 g/mol. It is also known as C.I. 34140, C.I. Direct Blue 71 and Direct Blue B2R. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4399-55-7
Jingsj CID: J-1095749-5
Molecular Formula: C₄₀H₂₃N₇Na₄O₁₃S₄
Chinese Name: 直接蓝71
Molecular Weight: 1029.869 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of Direct Blue 71?

The CAS number of Direct Blue 71 is 4399-55-7.

What are the molecular formula and molecular weight of Direct Blue 71?

Direct Blue 71 has molecular formula C40H23N7Na4O13S4 and molecular weight 1029.869 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Direct Blue 71 (CAS 4399-55-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1095749-5 (accessed 2026-10-25).

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