5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine

Modify Date: 2025-08-24 21:12:23

5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine structure	Common Name	5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine
	CAS Number	174508-31-7	Molecular Weight	299.968
	Density	2.1±0.1 g/cm3	Boiling Point	306.5±42.0 °C at 760 mmHg
	Molecular Formula	C₆H₄Br₂O₂S	Melting Point	98ºC
	MSDS	Chinese USA	Flash Point	139.2±27.9 °C
	Symbol	GHS07	Signal Word	Warning

Name	5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine
Synonym	More Synonyms

Density	2.1±0.1 g/cm3
Boiling Point	306.5±42.0 °C at 760 mmHg
Melting Point	98ºC
Molecular Formula	C₆H₄Br₂O₂S
Molecular Weight	299.968
Flash Point	139.2±27.9 °C
Exact Mass	297.829865
PSA	46.70000
LogP	3.06
Vapour Pressure	0.0±0.6 mmHg at 25°C
Index of Refraction	1.644
Storage condition	?20°C

MSDS(Chinese)

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H302
Hazard Codes	Xn:Harmful
Risk Phrases	R20/21/22;R36/37/38
Safety Phrases	S22-S26-S36/37/39
RIDADR	NONH for all modes of transport
HS Code	2934999090

3,4-Ethylenedio...

CAS#:126213-50-1

~99%

5,7-Dibromo-2,3...

CAS#:174508-31-7

Literature: Hicks, Robin G.; Nodwell, Matthew B. Journal of the American Chemical Society, 2000 , vol. 122, # 28 p. 6746 - 6753

Diethyl 2,3-dih...

CAS#:154934-13-1

5,7-Dibromo-2,3...

CAS#:174508-31-7

Literature: Journal of Materials Chemistry, , vol. 15, # 45 p. 4783 - 4792

2,3-Dihydro-thi...

CAS#:18361-03-0

5,7-Dibromo-2,3...

CAS#:174508-31-7

Literature: Journal of Materials Chemistry, , vol. 15, # 45 p. 4783 - 4792

Precursor 3
CAS#:126213-50-1 3,4-Ethylenedio... CAS#:154934-13-1 Diethyl 2,3-dih... CAS#:18361-03-0 2,3-Dihydro-thi...
DownStream 1
CAS#:852054-42-3 7-Bromo-2,3-dih...

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Synthesis and characterization of thiophene functionalized polystyrene copolymers and their electrochemical properties Sahin, E., Camurlu, P., Toppare, L., Mercore, V. M., Cianga, I., & Yagci, Y.

Polym. Int. 54(12) , 1599-1605, (2005)

Solid-state synthesis of a conducting polythiophene via an unprecedented heterocyclic coupling reaction.

J. Am. Chem. Soc. 125(49) , 15151-15162, (2003)

Prolonged storage ( approximately 2 years) or gentle heating (50-80 degrees C) of crystalline 2,5-dibromo-3,4-ethylenedioxythiophene (DBEDOT) affords a highly conducting, bromine-doped poly(3,4-ethyle...

Thieno[3,4-b]-1,4-dioxin, 5,7-dibromo-2,3-dihydro-

5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxin

5,7-Dibromo-2,3-dihydrothieno[3,4-b]-1,4-dioxine

5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine

2,5-Dibromo-3,4-ethylenedioxythiophene