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5,5''-Dibromo-2,2':5',2''-terthiophene

Also known as: 2,5-Bis(5-bromothiophen-2-yl)thiophene, 2,5-Di(5-bromothiophen-2-yl)thiophene, 5,5''-Dibromo-alpha-terthienyl, 5,5''-Dibromo-2,2':5',2''-terthiophene

5,5''-Dibromo-2,2':5',2''-terthiophene (CAS 98057-08-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H6Br2S3 and a molecular weight of 406.179 g/mol. Key properties include a melting point of 150-155ºC, a boiling point of 417.2±40.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 206.1±27.3 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
98057-08-0
Jingsj CID
J-1365114-4
Molecular Formula
C12H6Br2S3
Molecular Weight
406.179 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point150-155ºC
Boiling Point417.2±40.0 °C at 760 mmHg
Density1.8±0.1 g/cm3
Flash Point206.1±27.3 °C
Exact Mass403.799835
PSA84.72000
LogP7.08
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.707

GHS Safety & Compliance

Corrosion / Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed
  • H315 — Causes skin irritation
  • H318 — Causes serious eye damage
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2934999090
Summary2934999090. other heterocyclic compounds. 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 5,5''-Dibromo-2,2':5',2''-terthiophene?

The CAS number of 5,5''-Dibromo-2,2':5',2''-terthiophene is 98057-08-0.

What are the molecular formula and molecular weight of 5,5''-Dibromo-2,2':5',2''-terthiophene?

5,5''-Dibromo-2,2':5',2''-terthiophene has molecular formula C12H6Br2S3 and molecular weight 406.179 g/mol.

Is 5,5''-Dibromo-2,2':5',2''-terthiophene hazardous?

5,5''-Dibromo-2,2':5',2''-terthiophene has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.

What are the upstream and downstream products of 5,5''-Dibromo-2,2':5',2''-terthiophene?

For 5,5''-Dibromo-2,2':5',2''-terthiophene, Upstream Products: 2,2':5',2''-Terthiophene; Downstream Products: alpha-Quinquethiophene.

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

Last updated:

How to cite: Jingsj. "5,5''-Dibromo-2,2':5',2''-terthiophene (CAS 98057-08-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1365114-4 (accessed 2026-11-09).

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