Product Name: 2,3,4,5-Tetrachlorothiophene (CAS NO.6012-97-1)

Molecular Formula: C₄Cl₄S
Molecular Weight: 221.92g/mol
Mol File: 6012-97-1.mol
Einecs: 227-866-4
Appearance: White to light yellow crystal powder
Melting Point: 28-30 °C(lit.)
Boiling point: 233.4 °C at 760 mmHg
Flash Point: 130.2 °C
Density: 1.704 g/mL at 25 °C(lit.)
Refractive index: n20/D 1.591(lit.)
Surface Tension: 48.2 dyne/cm
Enthalpy of Vaporization: 45.1 kJ/mol
Vapour Pressure: 0.0853 mmHg at 25°C
XLogP3-AA: 4.8
H-Bond Donor: 0
H-Bond Acceptor: 0
Product Categories: Thiophenes; Thiophene&Benzothiophene; Halogenated Heterocycles; Heterocyclic Building Blocks; ThiophenesBuilding Blocks

Poison by ingestion, skin contact, intravenous, and intraperitoneal routes. Moderately toxic by inhalation. Combustible when exposed to heat or flame. When heated to decomposition it emits very toxic fumes of Cl− and SOx.
Safety Information of 2,3,4,5-Tetrachlorothiophene (CAS NO.6012-97-1):
Hazard Codes: T
Risk Statements: 23/24/25 
23:  Toxic by inhalation 
24:  Toxic in contact with skin 
25:  Toxic if swallowed 
Safety Statements: 26-28-36/37/39-45
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
28:  After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer)
36:  Wear suitable protective clothing  
37:  Wear suitable gloves 
39:  Wear eye/face protection
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) 

 2,3,4,5-Tetrachlorothiophene ,its CAS NO. is 6012-97-1,the synonyms is 2,3,4,5-Chlorothiophene ; 2,3,4,5-Tetrachloro-thiophen ; 2,3,4,5-Tetrachlorothiophene ; 2,3,4,5-Tetrachloro-thiophene ; Cp30487 ; ENT 25,764 ; Ent25,764;IF (Fumigant) .