108472

2,5-Dibromothiophene

95%

• Synonym(s): 2,5-dibromo-thiophene
• Empirical Formula (Hill Notation): C₄H₂Br₂S
• CAS Number: 3141-27-3
• Molecular Weight: 241.93
• EC Number: 221-547-3
• MDL number: MFCD00005420
• UNSPSC Code: 12352100
• PubChem Substance ID: 24846807
• NACRES: NA.22

Properties

• Assay: 95%
• refractive index: n20/D 1.629 (lit.)
• bp: 211 °C (lit.)
• mp: −6 °C (lit.)
• density: 2.147 g/mL at 25 °C (lit.)
• functional group: bromo
• SMILES string: Brc1ccc(Br)s1
• InChI: 1S/C4H2Br2S/c5-3-1-2-4(6)7-3/h1-2H
• InChI key: KBVDUUXRXJTAJC-UHFFFAOYSA-N

Description

General description

2,5-Dibromothiophene polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .

Application

2,5-Dibromothiophene was used as starting reagent for the synthesis of α,α′-didecylquater-, -quinque- and -sexi-thiophenes. It was used in the preparation of soluble α,ω-diformyl-a-oligothiophenes.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315,H319,H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 3
• Flash Point(F): 210.2 °F - closed cup
• Flash Point(C): 99 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves