9,9′-spirobifluorene

Also known as: 9,9'-Spirobi[9H-fluo, 9,9'-Spirobi[9H-fluorene], 9,9'-Spirobi[9H-fluorene] >9,9'-SpirobifL, 9,9'-Spirobi[9H-fluorene]9,9'-Spirobi[9H-fluorene], 9,9'-Spirobi[fluoren], 9,9'-Spirobi[fluorene], 9,9'-Spirobifluorene, 9,9'-Spirobifluorene, Spirobifluorene, 9,9'-spirobi(9h-fluorene), 9,9'-spirobi[9h-fluorene], 9,9-Spirobi[9H-Fluorene], JACS-159-66-0, MFCD08704216, Spirobifluorene

9,9′-spirobifluorene (CAS 159-66-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C25H16 and a molecular weight of 316.395 g/mol. Key properties include a melting point of 202 °C, a boiling point of 474.9±40.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 236.8±21.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 159-66-0
Jingsj CID: J-1197-2
Molecular Formula: C₂₅H₁₆
Molecular Weight: 316.395 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	202 °C
Boiling Point	474.9±40.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	236.8±21.4 °C
Exact Mass	316.125214
LogP	6.49
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.758

Customs & Trade Information

HS Code	2902909090
Summary	2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 9,9′-spirobifluorene?

The CAS number of 9,9′-spirobifluorene is 159-66-0.

What are the molecular formula and molecular weight of 9,9′-spirobifluorene?

9,9′-spirobifluorene has molecular formula C25H16 and molecular weight 316.395 g/mol.

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. "9,9′-spirobifluorene (CAS 159-66-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1197-2 (accessed 2026-11-09).

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