1,2,3,5-Tetrachlorbenzol

Bezeichnung:1,2,3,5-Tetrachlorbenzol

CAS-Nr634-90-2

Englisch Name:1,2,3,5-Tetrachlorobenzene

CBNumberCB1395743

SummenformelC6H2Cl4

Molgewicht215.89

MOL-Datei634-90-2.mol

Synonyma

1,2,3,5-Tetrachlorbenzol

1,2,3,5-Tetrachlorbenzol physikalisch-chemischer Eigenschaften

Schmelzpunkt	54.5°C
Siedepunkt	246°C
Dichte	1.5578 (estimate)
Dampfdruck	0.07 at 25 °C (extrapolated, Mackay et al., 1982)
Brechungsindex	1.5348 (estimate)
Flammpunkt	113 °C
storage temp.	APPROX 4°C
Löslichkeit	Soluble in alcohol, benzene, ether, and ligroin (Weast, 1986)
Farbe	White to Almost white
Wasserlöslichkeit	4.016mg/L(25 ºC)
BRN	1618864
Henry's Law Constant	58.0 at 25 °C (gas stripping-GC, Shiu and Mackay, 1997)
CAS Datenbank	634-90-2(CAS DataBase Reference)
NIST chemische Informationen	Benzene, 1,2,3,5-tetrachloro-(634-90-2)
EPA chemische Informationen	1,2,3,5-Tetrachlorobenzene (634-90-2)

Sicherheit

Kennzeichnung gefährlicher	Xn,T,F
R-Sätze:	22-39/23/24/25-23/24/25-11
S-Sätze:	22-24/25-45-36/37-16-7
RIDADR	UN 1230 3/PG 2
WGK Germany	3
RTECS-Nr.	DB9445000
HS Code	2903.99.8001
Giftige Stoffe Daten	634-90-2(Hazardous Substances Data)
Toxizität	Acute oral LD50 for rats 1,727 mg/kg (quoted, RTECS, 1985).

Gefahreninformationscode (GHS)

1,2,3,5-Tetrachlorobenzene Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
R11:Leichtentzündlich.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S7:Behälter dicht geschlossen halten.
Verwenden
1,2,3,5-Tetrachlorobenzene is used in the synthesis of several organic compounds including that of polyarylated benzenes by multiple Suzuki-Miyaura reactions. It was used as part of study which investigated the antimicrobial activity of tetra substituted benzene derivatives which suggested antimicrobial activity tended to decrease with increasing size of halogen substituents.
Definition
ChEBI: A tetrachlorobenzene carrying chloro groups at positions 1, 2, 3 and 5.
Allgemeine Beschreibung
White crystals or off-white solid.
Air & Water Reaktionen
Insoluble in water.
Reaktivität anzeigen
Simple aromatic halogenated organic compounds, such as 1,2,3,5-Tetrachlorobenzene , are very unreactive. Reactivity generally decreases with increased degree of substitution of halogen for hydrogen atoms. Materials in this group may be incompatible with strong oxidizing and reducing agents. Also, they may be incompatible with many amines, nitrides, azo/diazo compounds, alkali metals, and epoxides. 1,2,3,5-Tetrachlorobenzene may react with oxidizers. .
Health Hazard
ACUTE/CHRONIC HAZARDS: 1,2,3,5-Tetrachlorobenzene may cause irritation on contact.
Brandgefahr
1,2,3,5-Tetrachlorobenzene is probably combustible.
Environmental Fate
Biological. A mixed culture of soil bacteria or a Pseudomonas sp. transformed 1,2,3,5-tetrachlorobenzene to 2,3,4,6-tetrachlorophenol (Ballschiter and Scholz, 1980). The half-life of 1,2,3,5- tetrachlorobenzene in an anaerobic enrichment culture was 1.8 d (Beurskens et al., 1993).
In an enrichment culture derived from a contaminated site in Bayou d’Inde, LA, 1,2,3,5- tetrachlorobenzene underwent reductive dechlorination to 1,2,4- and 1,3,5-trichlorobenzene at relative molar yields of 7 and 93%, respectively. The maximum dechlorination rate, based on the recommended Michaelis-Menten model, was 94 nM/d (Pavlostathis and Prytula, 2000).
Photolytic. Irradiation (λ ≥285 nm) of 1,2,3,5-tetrachlorobenzene (1.1–1.2 mM/L) in an acetonitrile-water mixture containing acetone (0.553 mM/L) as a sensitizer gave the following products (% yield): 1,2,3-trichlorobenzene (5.3), 1,2,4-trichlorobenzene (4.9), 1,3,5-trichlorobenzene (49.3), 1,3-dichlorobenzene (1.8), 2,3,4,4′,5,5′,6-heptachlorobiphenyl (1.41), 2,2′,3,4,4′,6,6′- heptachlorobiphenyl (1.10), 2,2′,3,3′,4,5′,6-heptachlorobiphenyl (4.50), four hexachlorobiphenyls (4.69), one pentachlorobiphenyl (0.64), trichloroacetophenone, 1-(trichlorophenyl)-2-propanone, and (trichlorophenyl)acetonitrile (Choudhry and Hutzinger, 1984). Without acetone, the identified photolysis products (% yield) included 1,2,3-trichlorobenzene (trace), 1,2,4-trichlorobenzene (24.3), 1,3,5-trichlorobenzene (11.7), 1,3-dichlorobenzene (0.5), 1,4-dichlorobenzene (3.3), pentachlorobenzene (1.43), 1,2,3,4-tetrachlorobenzene (5.99), two heptachlorobiphenyls (1.40), two hexachlorobiphenyls (<0.01), and one pentachlorobiphenyl (0.75) (Choudhry and Hutzinger, 1984).
läuterung methode
Crystallise it from EtOH. [Beilstein 5 II 157, 5 III 551, 5 IV 668.]

1,2,3,5-Tetrachlorobenzene Upstream-Materialien And Downstream Produkte

1,2,3,5-Tetrachlorbenzol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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