2,4-Dibromothiophene
- Product Name
- 2,4-Dibromothiophene
- CAS No.
- 3140-92-9
- Chemical Name
- 2,4-Dibromothiophene
- Synonyms
- S0514;2,4-DIBROMOTHIOPHENE;Thiophene, 2,4-dibromo-;2,4-Dibromothiophene>2,4-Dibromothiophene,94%;2,4-DIBROMOTHIOPHENE,96%;2,4-DIBROMOTHIOPHENE 96%;2,4-DIBROMOTHIOPHENE, 90+%;Tiotropium bromide Impurity 22;2,4-Dibromothiophene in isooctane
- CBNumber
- CB7390432
- Molecular Formula
- C4H2Br2S
- Formula Weight
- 241.93
- MOL File
- 3140-92-9.mol
2,4-Dibromothiophene Property
- Melting point:
- -26.3°C
- Boiling point:
- 215°C
- Density
- 2.157 g/mL at 25 °C
- refractive index
- 1.631-1.633
- Flash point:
- 215°C
- storage temp.
- Keep in dark place,Inert atmosphere,2-8°C
- form
- liquid
- Specific Gravity
- 2.149
- color
- Colorless to Light yellow to Light orange
- Water Solubility
- It is insoluble in water.
- BRN
- 107651
- InChI
- InChI=1S/C4H2Br2S/c5-3-1-4(6)7-2-3/h1-2H
- InChIKey
- WAQFYSJKIRRXLP-UHFFFAOYSA-N
- SMILES
- C1(Br)SC=C(Br)C=1
- CAS DataBase Reference
- 3140-92-9(CAS DataBase Reference)
Safety
- Hazard Codes
- Xn,Xi,T
- Risk Statements
- 36/37/38-20/21/22-41-37/38-25
- Safety Statements
- 36/37/39-26-36-45-39
- RIDADR
- UN2810
- WGK Germany
- 3
- Hazard Note
- Irritant
- HazardClass
- 6.1
- PackingGroup
- III
- HS Code
- 29349990
- Storage Class
- 6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects - Hazard Classifications
- Acute Tox. 3 Oral
Eye Dam. 1
Skin Irrit. 2
STOT SE 3
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H301Toxic if swalloed
H315Causes skin irritation
H318Causes serious eye damage
H335May cause respiratory irritation
- Precautionary statements
-
P280Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352IF ON SKIN: wash with plenty of soap and water.
N-Bromosuccinimide Price
- Product number
- 759325
- Product name
- 2,4-Dibromothiophene
- Packaging
- 5g
- Price
- $91.7
- Updated
- 2025/07/31
- Product number
- D4146
- Product name
- 2,4-Dibromothiophene
- Purity
- >90.0%(GC)
- Packaging
- 1g
- Price
- $27
- Updated
- 2025/07/31
- Product number
- D4146
- Product name
- 2,4-Dibromothiophene
- Purity
- >90.0%(GC)
- Packaging
- 5g
- Price
- $96
- Updated
- 2025/07/31
- Product number
- 45025
- Product name
- 2,4-Dibromothiophene,≥90%(GC)
- Purity
- ≥90%(GC)
- Packaging
- 1G
- Price
- $29.37
- Updated
- 2021/12/16
- Product number
- 067224
- Product name
- 2,4-Dibromothiophene
- Purity
- 92%
- Packaging
- 5g
- Price
- $43
- Updated
- 2021/12/16
2,4-Dibromothiophene Chemical Properties,Usage,Production
Chemical Properties
clear colorless to light brown liquid
Uses
2,4-Dibromothiophene is used as an important raw material and intermediate used in organic Synthesis, pharmaceuticals, agrochemicals and dyestuff. It is also used as an intermediate in organic synthesis.
Synthesis
2,3,5-Tribromothiophene (1):
120 g (1.43 mol) of thiophene was added to 240 mL of glacial acetic acid and 687 g (4.30 mol) of Br2 was added dropwise at 5-10 C, stirred at room temperature for 3 h and heated at reflux for 2 h. The residue was then evaporated under vacuum and distilled through a short Vigreux column. Subsequently, the glacial acetic acid was evaporated under vacuum and the residue was distilled through a short Vigreux column under water jet vacuum. Yield: 376.2 g (1.17 mol)1 (82%).
2,4-Dibromothiophene (4):
120 g (0.374 mol) of 2,3,5-tribromothiophene (1) was dissolved in 300 mL of ether, cooled to -30 C under N2, and 234 mL of a n-hexane solution of 6NBuLi (0.374 mol) was added dropwise over a period of 10 min at this temperature, stirred at -30 C for 5 minutes, poured into 1 L of cold water and extracted with ether 3 times. The combined ether phases were washed three times with water, dried with Na2SO4 and evaporated. The residue was fractionated on a 1 mVigreux flask under vacuum. Yield: 60 g (0.248 mol)4 (66%).
2,4-Dibromothiophene Preparation Products And Raw materials
Raw materials
Preparation Products
2,4-Dibromothiophene Suppliers
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View Lastest Price from 2,4-Dibromothiophene manufacturers
- Product
- 2,4-Dibromothiophene 3140-92-9
- Price
- US $0.00-0.00/kg
- Min. Order
- 1kg
- Purity
- 98%
- Supply Ability
- 1Ton
- Release date
- 2022-09-26
- Product
- 2,4-Dibromothiophene 3140-92-9
- Price
- US $590.00/g
- Min. Order
- 1g
- Purity
- 98
- Supply Ability
- 500 Kg
- Release date
- 2024-02-19
- Product
- 2,4-Dibromothiophene 3140-92-9
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- Customized
- Release date
- 2019-05-24