2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
Also known as: 2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene], 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene, Tetrabromo-9,9'-spirobifluorene, 2,2',7,7'-Tetrabromo-9,9'-spirobi[fluorene], MFCD08704220
2,2',7,7'-Tetrabromo-9,9'-spirobifluorene (CAS 128055-74-3) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C25H12Br4 and a molecular weight of 631.98700 g/mol. Key properties include a boiling point of 633.7ºC at 760 mmHg, a density of 2.12g/cm3 and a flash point of 322.5ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 128055-74-3
- Jingsj CID
- J-1080519-3
- Molecular Formula
- C25H12Br4
- Molecular Weight
- 631.98700 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 633.7ºC at 760 mmHg |
|---|---|
| Density | 2.12g/cm3 |
| Flash Point | 322.5ºC |
| Exact Mass | 683.237366 |
| PSA | 216.82000 |
| LogP | 3.81870 |
| Vapor Pressure | 2.83E-15mmHg at 25°C |
| Refractive Index | 1.843 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2903999090 |
|---|---|
| Summary | 2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene?
The CAS number of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene is 128055-74-3.
What are the molecular formula and molecular weight of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene?
2,2',7,7'-Tetrabromo-9,9'-spirobifluorene has molecular formula C25H12Br4 and molecular weight 631.98700 g/mol.
Is 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene hazardous?
2,2',7,7'-Tetrabromo-9,9'-spirobifluorene has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene?
For 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene, Upstream Products: 9,9′-spirobifluorene, 2,7-Dibromo-9,9'-spirobifluorene, 2-Iodobiphenyl.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,2',7,7'-Tetrabromo-9,9'-spirobifluorene (CAS 128055-74-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1080519-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.