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  • 8.21605 - 1,2,3,4-Tetrachlorobenzene

8.21605 EMD Millipore


1,2,3,4-Tetrachlorobenzene for synthesis. CAS 634-66-2, chemical formula C₆H₂-1,2,3,4-(Cl)₄., for synthesis

  • CAS Number 634-66-2

  • Linear Formula C₆H₂Cl₄

  • Molecular Weight 215.89 g/mol

  •  EC Number 211-214-0



Related Categories Biochemicals and Reagents More...
packaging   10 g in Glass bottle (8216050010)
bp   254 °C (1013 hPa)
vapor pressure   0.03 hPa (25 °C)
solubility   0.0028 g/l
density   1.73 g/cm3 (20 °C)
flash point   155 °C
mp   42 - 45 °C
LD 50 oral   LD50 Rat 1167 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (HPLC, area%): ≥ 96.0 % (a/a)
  Melting range (lower value): ≥ 42 °C
  Melting range (upper value): ≤ 45 °C
  Identity (IR): passes test
  Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

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Safety Information

HS Code 
2903 99 80
Hazard Statement(s) 
H302: Harmful if swallowed.
H410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s) 
P273: Avoid release to the environment.
Storage class 
10 - 13 Other liquids and solids
WGK 3 highly water endangering
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Pictogram(s) 
GHS09  GHS09
Hazard Symbols 
Dangerous for the environment  Dangerous for the environment
Hazard Symbols 
Harmful  Harmful
Declaration (railroad and road) ADR, RID 
UN 3077 , 9, III
Declaration (transport by air) IATA-DGR 
UN 3077 , 9, III
Declaration (transport by sea) IMDG-Code 
UN 3077 , 9, III, Marine Pollutant: P
Categories of danger 
harmful, dangerous for the environment
R Phrase 
R 22-50/53
Harmful if swallowed.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase 
S 61
Avoid release to the environment. Refer to special instructions/ Safety data sheets.
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