21080-92-2

Name 3-Thiophenemalonic acid
CAS 21080-92-2
EINECS(EC#) 244-198-9
Molecular Formula C7H6O4S
MDL Number MFCD00005469
Molecular Weight 186.19
MOL File 21080-92-2.mol

Chemical Properties

Appearance white to light yellow crystal powder
Melting point  139 °C (dec.) (lit.)
Boiling point  290.67°C (rough estimate)
density  1.5439 (rough estimate)
refractive index  1.5500 (estimate)
storage temp.  2-8°C
form  powder to crystal
pka 2.73±0.10(Predicted)
color  White to Orange to Green
BRN  6503620
InChI InChI=1S/C7H6O4S/c8-6(9)5(7(10)11)4-1-2-12-3-4/h1-3,5H,(H,8,9)(H,10,11)
InChIKey GCOOGCQWQFRJEK-UHFFFAOYSA-N
SMILES C(O)(=O)C(C1C=CSC=1)C(O)=O
CAS DataBase Reference 21080-92-2(CAS DataBase Reference)
EPA Substance Registry System 21080-92-2(EPA Substance)

Safety Data

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
WGK Germany  3
TSCA  TSCA listed
REACH Registrations Active
HS Code  29309090
Storage Class 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

Hazard Information

Material Safety Data Sheet(MSDS)

Well-known Reagent Company Product Information

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