ChemicalBook > CAS DataBase List > 1,2,4,5-Tetrachlorobenzene

1,2,4,5-Tetrachlorobenzene

CAS No.95-94-3
Chemical Name:1,2,4,5-Tetrachlorobenzene
CBNumber:CB7854716
Molecular Formula:C6H2Cl4
Formula Weight:215.89
MOL File:95-94-3.mol

1,2,4,5-Tetrachlorobenzene Property

Melting point 139 °C
Boiling point 240-246 °C(lit.)
Density 1.858
vapor pressure 5 at 25 °C (extrapolated, Mackay et al., 1982)
refractive index 1.5348 (estimate)
Flash point >230 °F
storage temp. 0-6°C
solubility 0.0003g/l
form Crystalline Solid
color Light pink to gray
Water Solubility insoluble. <0.1 g/100 mL at 21 ºC
BRN 1618315
Henry's Law Constant 0.10 at 20 °C (gas stripping-GC, Oliver, 1985)
Stability Stable. Combustible. Incompatible with strong oxidizing agents. Reacts explosively with alkaline methanol solutions.
CAS DataBase Reference 95-94-3(CAS DataBase Reference)
FDA UNII 5N27529KGH
NIST Chemistry Reference Benzene, 1,2,4,5-tetrachloro-(95-94-3)
EPA Substance Registry System 1,2,4,5-Tetrachlorobenzene (95-94-3)
UNSPSC Code 12352100
NACRES NA.22

Safety

Hazard Codes :Xn,T,F,N
Risk Statements :22-36/37/38-23/24/25-11-36-20/21/22-51/53
Safety Statements :26-36-45-27-16-36/37-61
RIDADR :UN 3077 9/PG 3
WGK Germany :3
RTECS :DB9450000
TSCA :Yes
HazardClass :9
HS Code :29036990
Hazardous Substances Data :95-94-3(Hazardous Substances Data)
Toxicity :Acute oral LD50 for rats 1,500 mg/kg, mice 1,035 mg/kg (quoted, RTECS, 1985).

NFPA 704:

	1
2		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordWarning
Hazard statements H302-H410
Precautionary statements P273-P301+P312+P330

1,2,4,5-Tetrachlorobenzene Price More Price(7)

Brand: Sigma-Aldrich
Product number: 131857
Product name : 1,2,4,5-Tetrachlorobenzene
Purity: 98%
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Brand: Sigma-Aldrich(India)
Product number: 131857
Product name : 1,2,4,5-Tetrachlorobenzene
Purity: 98%
Packaging: 5G
Price: ₹1909.55
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Product number: ALF-A14318-30
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Purity:
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Brand: ALFA India
Product number: ALF-A14318-18
Product name : 1,2,4,5-Tetrachlorobenzene, 98%
Purity:
Packaging: 50g
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Brand: TCI Chemicals (India)
Product number: T0060
Product name : 1,2,4,5-Tetrachlorobenzene
Purity: min. 99.0 %
Packaging: 25G
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1,2,4,5-Tetrachlorobenzene Chemical Properties,Usage,Production

Chemical Properties white solid
Uses 1,2,4,5-Tetrachlorobenzene was used to study the environmental behavior of hexachlorobutadiene (HCBD).
Uses Intermediate for herbicides and defoliants, insecticide, impregnant for moisture resistance, electrical insulation.
Definition ChEBI: A tetrachlorobenzene carrying chloro groups at positions 1, 2, 4 and 5.
Environmental Fate Biological. A mixed culture of soil bacteria or a Pseudomonas sp. transformed 1,2,4,5- tetrachlorobenzene to 2,3,5,6-tetrachlorophenol (Ballschiter and Scholz, 1980). After incubation in sewage sludge for 32 d under anaerobic conditions, 1,2,4,5-tetrachlorobenzene did not biodegrade (Kirk et al., 1989).
In an enrichment culture derived from a contaminated site in Bayou d’Inde, LA, 1,2,4,5- tetrachlorobenzene underwent reductive dechlorination to 1,2,4-trichlorobenzene. The maximum dechlorination rate, based on the recommended Michaelis-Menten model, was 5.5 nM/d (Pavlostathis and Prytula, 2000).
Photolytic. Irradiation (λ ≥285 nm) of 1,2,4,5-tetrachlorobenzene (1.1–1.2 mM/L) in an acetonitrile-water mixture containing acetone (0.553 mM) as a sensitizer gave the following products (% yield): 1,2,4-trichlorobenzene (25.3), 1,3-dichlorobenzene (8.1), 1,4-dichlorobenzene (3.6), 2,2′,3,4′,5,5′,6-heptachlorobiphenyl (4.19), four hexachlorobiphenyls (6.78), four pentachlorobiphenyls (2.33), one tetrachlorobiphenyl (0.32), 2,4,5-trichloroacetophenone, and (2,4,5- trichlorophenyl)acetonitrile (Choudhry and Hutzinger, 1984). Without acetone, the identified photolysis products (% yield) included 1,2,4-trichlorobenzene (27.7), 1,3-dichlorobenzene (0.3), 1,4-dichlorobenzene (8.5), pentachlorobenzene (trace), 1,2,3,4-tetrachlorobenzene (0.45), 1,2,3,5- tetrachlorobenzene (1.11), 2,2′,3,4′,5,5′,6-heptahlorobiphenyl (1.24), three hexachlorobiphenyls (1.19), and four pentachlorobiphenyls (0.56) (Choudhry and Hutzinger, 1984). The sunlight irradiation of 1,2,4,5-tetrachlorobenzene (20 g) in a 100-mL borosilicate glass-stoppered Erlenmeyer flask for 28 d yielded 26 ppm heptachlorobiphenyl (Uyeta et al., 1976).
Chemical/Physical. Based on an assumed base-mediated 1% disappearance after 16 d at 85 °C and pH 9.70 (pH 11.26 at °C), the hydrolysis half-life was estimated to be >900 yr (Ellington et al., 1988).
Purification Methods Crystallise it from EtOH, ether, *benzene, *benzene/EtOH or carbon disulfide. [Beilstein 5 IV 668.]
Toxics Screening Level The current initial threshold screening level (ITSL) for 1,2,4,5-tetrachlorobenzene is 1 μg/m3 based on an annual averaging time.