Product

2,5-Dichlorothiophene

CAS No.：3172-52-9

Other grades of this product :

2,5-Dichlorothiophene Basic information

Product Name:	2,5-Dichlorothiophene
Synonyms:	DICHLOROTHIOPHENE;2,5-DICHLOROTHIOPHENE;2,6-DICHLOROTHIOPHENE;2,5-dichloro-thiophen;thiophene,2,5-dichloro-;2,5-Dichlorothiophenene;2,5-Dichlorothiophene,97%;5-chloro-2-thienyl chloride
CAS:	3172-52-9
MF:	C4H2Cl2S
MW:	153.03
EINECS:	221-638-8
Product Categories:	Heterocycle-oher series;Halogenated Heterocycles;Thiophenes;Organics;Heterocyclic Building Blocks;ThiophenesBuilding Blocks;Thiophene&Benzothiophene;Miscellaneous;Thiophens
Mol File:	3172-52-9.mol

2,5-Dichlorothiophene Chemical Properties

Melting point	-41--40°C
Boiling point	162 °C (lit.)
density	1.442 g/mL at 25 °C (lit.)
refractive index	1.561-1.563
Fp	59 °C
storage temp.	2-8°C
form	liquid
Specific Gravity	1.442
color	Colorless to Light yellow to Light orange
BRN	109887
CAS DataBase Reference	3172-52-9(CAS DataBase Reference)
NIST Chemistry Reference	Thiophene, 2,5-dichloro-(3172-52-9)
EPA Substance Registry System	Thiophene, 2,5-dichloro- (3172-52-9)

Safety Information

Hazard Codes	T+,Xn
Risk Statements	40-26/27/28-36/37/38-20/21/22
Safety Statements	45-36/37-28A-36-26
RIDADR	2929
WGK Germany	3
TSCA	T
HazardClass	6.1
PackingGroup	II
HS Code	29349990

MSDS Information

Provider	Language
2,5-Dichlorothiophene	English
ACROS	English
ALFA	English

2,5-Dichlorothiophene Usage And Synthesis

Chemical Properties	clear colorless to slightly yellow liquid
Uses	2,5-Dichlorothiophene is mainly used as a pharmaceutical intermediate. It is used in the synthesis of 3,4-disubstituted thiophenes.
Synthesis Reference(s)	Tetrahedron, 52, p. 8863, 1996 DOI: 10.1016/0040-4020(96)00433-4

2,5-Dichlorothiophene Preparation Products And Raw materials

Preparation Products

Lornoxicam-->Brinzolamide-->2,5-Dichlorothiophene-3-sulfonyl chloride-->5-CHLOROTHIOPHENE-2-CARBOXYLIC ACID-->5-CHLOROTHIOPHENE-2-CARBONYL CHLORIDE-->2,5-Dichlorothiophene-3-sulfonamide-->5-CHLORO-2-THIOPHENECARBOXYLIC ACID HYDRAZIDE-->2,5-DICHLORO-3,4-DINITROTHIOPHENE-->2,3,5-TRICHLOROTHIOPHENE-->ETHYL 5-CHLOROTHIOPHENE-2-CARBOXYLATE-->3-Acetyl-2,5-dichlorothiophene-->2-Chlorothiophene-->3,4-Dichlorothiophene-->5-CHLORO-2-THIOPHENECARBONITRILE

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