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2,5-Dibromothiazole

Also known as: 2,5-Dibromo-1,3-thiazole, 2,5-DIBROMOTHIAZOLE 95%, 2,5-Dibromothiazole,97%, NSC222407, Thiazole,2,5-dibroMo-, 2,5-Dibormothiazole, DibromoThiazole

2,5-Dibromothiazole (CAS 4175-78-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C3HBr2NS and a molecular weight of 242.92 g/mol. Key properties include a melting point of 45-49 °C(lit.), a boiling point of 242.8±13.0 °C at 760 mmHg, a density of 2.3±0.1 g/cm3 and a flash point of 100.6±19.8 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4175-78-4
Jingsj CID
J-22513-8
Molecular Formula
C3HBr2NS
Molecular Weight
242.92 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point45-49 °C(lit.)
Boiling Point242.8±13.0 °C at 760 mmHg
Density2.3±0.1 g/cm3
Flash Point100.6±19.8 °C
Exact Mass240.819626
PSA41.13000
LogP2.70
Vapor Pressure0.1±0.5 mmHg at 25°C
Refractive Index1.650

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2934100090
Summary2934100090 other compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2,5-Dibromothiazole?

The CAS number of 2,5-Dibromothiazole is 4175-78-4.

What are the molecular formula and molecular weight of 2,5-Dibromothiazole?

2,5-Dibromothiazole has molecular formula C3HBr2NS and molecular weight 242.92 g/mol.

Is 2,5-Dibromothiazole hazardous?

2,5-Dibromothiazole has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 2,5-Dibromothiazole?

For 2,5-Dibromothiazole, Upstream Products: 2-Bromothiazole, 2-Amino-5-bromothiazole, Thiazole; Downstream Products: 5-Bromo-2-phenylthiazole, 5-Bromo-2-(piperazin-1-yl)thiazole, Thiazole.

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

Last updated:

How to cite: Jingsj. "2,5-Dibromothiazole (CAS 4175-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22513-8 (accessed 2026-11-09).

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