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

Modify Date: 2024-01-09 15:59:09

5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine Structure
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
GHS07
Signal Word Warning

 Names

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

 Chemical & Physical Properties

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

 Safety Information

Symbol GHS07
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

 Customs

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

 Articles2

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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...

 Synonyms

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
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