2,5-Thiophenedicarboxylic acid
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2,5-Thiophenedicarboxylic acid
structure -
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CAS No:
4282-31-9
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Formula:
C6H4O4S
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Chemical Name:
2,5-Thiophenedicarboxylic acid
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Synonyms:
2,5-Thiophenedicarboxylic acid;2,5-Dicarboxythiophene;NSC 81789;Thiophene-2,5-dicarboxylic acid
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CAS No:
2,5-Thiophenedicarboxylic acid Basic Attributes
172.16
172.16
136781
224-284-2
5Q8A2G9Y8A
81789
DTXSID7063392
2934999090
Characteristics
103
1.3
white to light yellow crystal powder
1.7±0.1 g/cm3
359 °C
444.6°C at 760 mmHg
222.7±24.6 °C
1.663
Very soluble in water.
Safety Information
IRRITANT
NONH for all modes of transport
3
36/37/38
26-36-37/39
Xi
Irritant
P261-P305 + P351 + P338
H315-H319-H335
|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 44 companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
2,5-Thiophenedicarboxylic acid Use and Manufacturing
Mix adipic acid and thionyl chloride in a weight ratio of 1: (6-10), and reflux for 20-60 hours in the presence of the catalyst pyridine. The solvent is evaporated, and the residue is heated at 140-160°C for 3-7h. After sodium hydroxide treatment, acid precipitation, filtration, decolorization and purification, thiophene-2, 5-dicarboxylic acid is obtained.
Mainly used in the whitening of synthetic fibers, EVA, PVC, plastics and rubber, can be used in the whitening of plastic films, compression molding materials, injection molding materials, etc.
2,5-Thiophenedicarboxylic acid: ACTIVE
Computed Properties
Molecular Weight:172.16
XLogP3:1.3
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:5
Rotatable Bond Count:2
Exact Mass:171.98302978
Monoisotopic Mass:171.98302978
Topological Polar Surface Area:103
Heavy Atom Count:11
Complexity:171
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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InquiryCAS No.: 4282-31-9Grade: Auxiliaries for synthetic materialsContent: 99%
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