3,4-Dimethylthieno(2,3-b)thiophene-2,5-dicarboxylic acid
Names
[ CAS No. ]:
175202-55-8
[ Name ]:
3,4-Dimethylthieno(2,3-b)thiophene-2,5-dicarboxylic acid
[Synonym ]:
3,4-Dimethylthieno(2,3-b)thiophene-2,5-dicarboxylic acid
3,4-dimethylthiopheno[2,3-b]thiophene-2,5-dicarboxylic acid
MFCD00067989
Chemical & Physical Properties
[ Density]:
1.6g/cm3
[ Boiling Point ]:
538ºC at 760mmHg
[ Melting Point ]:
>360°C
[ Molecular Formula ]:
C10H8O4S2
[ Molecular Weight ]:
256.29800
[ Flash Point ]:
279.2ºC
[ Exact Mass ]:
255.98600
[ PSA ]:
131.08000
[ LogP ]:
2.97600
[ Vapour Pressure ]:
2.08E-12mmHg at 25°C
[ Index of Refraction ]:
1.736
Safety Information
[ Risk Phrases ]:
R36/37/38:Irritating to eyes, respiratory system and skin .
[ Safety Phrases ]:
S26-S36/37/39
[ 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%