| Identification | More | [Name]
2,5-Dibromothiophene | [CAS]
3141-27-3 | [Synonyms]
2,5 DBT
2,5-DIBROMOTHIOPHENE
2,5-dibromo-thiophen
Dibromothiophene
2,5-Dibromothiophene,96%
Thiophene,2,5-dibromo-
2,5-DIBROMO THIOPHENE 98.0%MIN | [EINECS(EC#)]
221-547-3 | [Molecular Formula]
C4H2Br2S | [MDL Number]
MFCD00005420 | [Molecular Weight]
241.93 | [MOL File]
3141-27-3.mol |
| Chemical Properties | Back Directory | [Appearance]
Light Yellow Liquid | [Melting point ]
-6 °C (lit.) | [Boiling point ]
211 °C (lit.) | [density ]
2.147 g/mL at 25 °C(lit.) | [refractive index ]
1.627-1.63
| [Fp ]
99 °C
| [storage temp. ]
0-6°C | [solubility ]
Chloroform, Methanol | [form ]
Liquid | [color ]
Clear pale yellow to brown | [Specific Gravity]
2.147 | [Water Solubility ]
practically insoluble | [Detection Methods]
GC,NMR | [BRN ]
109899 | [InChIKey]
KBVDUUXRXJTAJC-UHFFFAOYSA-N | [CAS DataBase Reference]
3141-27-3(CAS DataBase Reference) | [NIST Chemistry Reference]
Thiophene, 2,5-dibromo-(3141-27-3) | [Storage Precautions]
Light sensitive | [EPA Substance Registry System]
3141-27-3(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
T+,Xi | [Risk Statements ]
R68:Possible risk of irreversible effects.
R43:May cause sensitization by skin contact.
R36/37/38:Irritating to eyes, respiratory system and skin .
R28:Very Toxic if swallowed.
R20/21:Harmful by inhalation and in contact with skin . | [Safety Statements ]
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [RIDADR ]
UN2810 | [WGK Germany ]
3 | [Hazard Note ]
Irritant | [TSCA ]
T | [HazardClass ]
6.1 | [PackingGroup ]
II | [HS Code ]
29349900 |
| Raw materials And Preparation Products | Back Directory | [Raw materials]
Thiophene(SIV) (9CI)-->Potassium tert-butoxide-->Chloroform-->2,5-BIS(TRIMETHYLSILYL)THIOPHENE-->N-Bromosuccinimide-->Acetic acid-->AKOS 92422-->Thiophene, 2,5-dibromo-3-fluoro- | [Preparation Products]
5-Bromothiophene-2-carbohydrazide-->3,4-DIAMINOTHIOPHENE DIHYDROCHLORIDE-->Ethyl 5-bromothiophene-2-carboxylate-->5,5'-Dibromo-2,2'-bithiophene-->ETHYL 5-BROMOTHIOPHENE-2-CARBOXYLATE-->2,2':5',2''-TERTHIOPHENE-->2,3,5-Tribromothiophene-->2-Acetyl-5-bromothiophene-->Thiophene-2,5-dicarbonitrile-->3,5-DIBROMO-2-METHYLTHIOPHENE-->2-(TRIBUTYLSTANNYL)THIOPHENE-->5-Bromothiophenesulfonyl chloride-->5-Bromo-2-thiophenecarboxylic acid |
| Hazard Information | Back Directory | [Chemical Properties]
Light Yellow Liquid | [Uses]
2,5-Dibromothiophene, is mainly used as pharmaceutical intermediate and synthesis intermediate. | [Synthesis Reference(s)]
The Journal of Organic Chemistry, 58, p. 3072, 1993 DOI: 10.1021/jo00063a028
Synthesis, p. 890, 1988 DOI: 10.1055/s-1988-27740 | [General Description]
2,5-Dibromothiophene polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) . | [References]
[1] Tetrahedron Letters, 2010, vol. 51, # 1, p. 205 - 208
[2] Journal of Organic Chemistry, 1993, vol. 58, # 11, p. 3072 - 3075
[3] Synthesis, 1988, # 11, p. 890 - 891
[4] Journal of Organic Chemistry, 2018, vol. 83, # 2, p. 930 - 938
[5] Patent: KR2018/17709, 2018, A. Location in patent: Paragraph 0173; 0176-0179 |
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