Empirical Formula: C₃H₂ClNS
Molecular Weight: 119.5727 
EINECS: 221-228-9 
Nominal Mass: 119 Da
Average Mass: 119.5727 Da
Monoisotopic Mass: 118.959647 Da 
Index of Refraction: 1.57
Molar Refractivity: 27.62 cm³
Molar Volume: 84 cm³
Surface Tension: 47.2 dyne/cm
Density: 1.421 g/cm³
Flash Point: 63.2 °C
Enthalpy of Vaporization: 40 kJ/mol
Boiling Point: 180.8 °C at 760 mmHg
Vapour Pressure: 1.19 mmHg at 25 °C
Structure of 2-Chlorothiazole (CAS NO.3034-52-4):
                          
IUPAC Name: 2-Chloro-1,3-thiazole
Canonical SMILES: C1=CSC(=N1)Cl
InChI: InChI=1S/C3H2ClNS/c4-3-5-1-2-6-3/h1-2H
InChIKey: KLEYVGWAORGTIT-UHFFFAOYSA-N
Product Category of 2-Chlorothiazole (CAS NO.3034-52-4): Thiazole series;Halides;Thiazoles, Isothiazoles &Benzothiazoles

Hazard Codes of 2-Chlorothiazole (CAS NO.3034-52-4): Xi,Xn
Risk Statements: 20/21/22-36/37/38 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 23-26-36/37/39 
S23:Do not breathe vapour. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.

 2-Chlorothiazole , its cas register number is 3034-52-4. It also can be called 2-Chloro-1,3-thiazole .