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2,4-Dichlorbenzoesure Produkt Beschreibung

CAS-Nr.50-84-0
Bezeichnung:2,4-Dichlorbenzoesure
Englisch Name:2,4-Dichlorobenzoic acid
Synonyma:
2,4-DCBA;'LGC' (1305);2.4-Dichlorobe;AKOS BBS-00003747;Dichlorbenzoic aci;RARECHEM AL BO 0324;2,4-Dichlorobenzoic;2,4-Dichlorbenzoic a;2,4-dichloro-benzoicaci;2,4-Dichlorbenzoic acid
CBNumber:CB9255955
Summenformel:C7H4Cl2O2
Molgewicht:191.01
MOL-Datei:50-84-0.mol
2,4-Dichlorbenzoesure physikalisch-chemischer Eigenschaften
Schmelzpunkt:: 157-160 °C(lit.)
Siedepunkt:: 200 °C
Dichte: 1.4410 (rough estimate)
Brechungsindex: 1.4590 (estimate)
storage temp. : Store below +30°C.
Löslichkeit: ethanol: soluble1g/10 mL, clear, colorless
Aggregatzustand: Powder
Farbe: White to almost white
PH: 2.8 (0.36g/l, H2O, 15℃)
Wasserlöslichkeit: 0.36 g/L (15 ºC)
BRN : 1868192
Stabilität:: Stable. Incompatible with strong oxidizing agents.
CAS Datenbank: 50-84-0(CAS DataBase Reference)
NIST chemische Informationen: 2,4-Dichlorobenzoic acid(50-84-0)
EPA chemische Informationen: Benzoic acid, 2,4-dichloro-(50-84-0)
Sicherheit
Kennzeichnung gefährlicher: Xn,Xi
R-Sätze:: 22-36/37/38
S-Sätze:: 26-36-37/39-22
WGK Germany : 3
RTECS-Nr.: DG6650000
Hazard Note : Irritant
TSCA : Yes
HS Code : 29163900

2,4-Dichlorbenzoesure Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S22:Staub nicht einatmen.
Chemische Eigenschaften
white powder
Verwenden
2,4-Dichlorobenzoic Acid is a di-halogenated benzoic acid derivative and an intermediate in the synthesis of spirodiclofen (S682990), a tetronic acid acaricide fungicide used in controlling red mites.
Definition
ChEBI: A chlorobenzoic acid that is benzoic acid in which the ring hydrogens at positions 2 and 4 are substituted by chloro groups.
Allgemeine Beschreibung
White to slightly yellowish powder.
Air & Water Reaktionen
Insoluble in water.
Reaktivität anzeigen
2,4-Dichlorobenzoic acid is a halogenated carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in 2,4-Dichlorobenzoic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions.
Brandgefahr
Flash point data for 2,4-Dichlorobenzoic acid are not available; however, 2,4-Dichlorobenzoic acid is probably combustible.
läuterung methode
Crystallise the acid from aqueous EtOH (charcoal), then *benzene (charcoal). It can also be recrystallised from water. [Beilstein 9 IV 998.] It can be freed from isomeric acids (to <0.05%) via the (±)--methylbenzylamine salt as follows: dissolve the dichloro-acid (10g, 50.2mmol) in isopropanol (200mL), heat to 60o and add the (±)-benzylamine (5.49g, 45.3mmol), then stir it at 60o for 1hour. Cool the mixture to room temperature, filter the slurry, wash it with isopropanol (25mL) and dry it in vacuo at 40o overnight to give 79% of the salt with m 185.2o. Dissolve the salt (5g) in H2O (50mL) and MeOH (20mL), then heat to 60o and add concentrated HCl to pH <2.0. Cool the solution to room temperature add H2O (12mL), filter it, wash it with H2O (30mL) and dry it in vacuo at 40o overnight to give 94% of the acid with m 162.0o. [Ley & Yates Organic Process Research & Development 12 120 2008.]
2,4-Dichlorbenzoesure Upstream-Materialien And Downstream Produkte
Upstream-Materialien
2,4-Dichlortoluol 4-Methyl-m-phenylendiamin Carbonylchlorid Kupfer(I)-chlorid Kaliumformiat Kaliumpermanganat 2,4-Dichlorbenzoylchlorid
Downstream Produkte
Furosemid 2,4-Dichlorbenzonitril 2,4-Dichlor-5-sulfamoylbenzoesure 2,4-Dichlor-3,5-dinitrobenzoesaeure 4-Chlor-2-(4-methoxyphenyl)anthranilsure 2,4-Dichlorbenzoylchlorid
2,4-Dichlorbenzoesure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.      Global( 300)Lieferanten     
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95sales@capotchem.com China 19918 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21990 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693info@tianfuchem.com CHINA 20680 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733sales@mainchem.com CHINA 32457 55
PI & PI BIOTECH INC.
020-81716320
020-81716319Sales@pipitech.com CHINA 2543 55
Speranza Chemical Co., Ltd.
+8618688942810
+86-755-33122716sophieliu@speranzachem.com CHINA 171 55
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 24001 58
QUALITY CONTROL CHEMICALS INC.
(323) 306-3136
(626) 453-0409orders@qcchemical.com United States 8409 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 19923 58
Beijing Century Richap Chemistry Co., Ltd. +86 10 64446226,64455497
+86 10 6445 5595info@bj-newcenturychem.com China 110 55
 
50-84-0(2,4-Dichlorbenzoesure)Verwandte Suche:
2,4-Dichlor-5-sulfamoylbenzoesure 2,4-Dichlor-3,5-dinitrobenzoesaeure Dibutyltetrachlorphthalat Bis(2,4,5-trichlor-6-carbopentoxyphenyl)oxalat Bis(2,4-dichlorbenzoyl)peroxid 2,4-Dichlorbenzoesure 3,5-Dichlorbenzoesaeure 4-Aminobenzoesure Estradiolbenzoat 1,2-Dichlorethan 1-(2,4-Dichlorphenyl)ethan-1-on 2,6-Dichlorbenzoesure Anthranilic acid Benzoesure N,N-BIS(2-CHLOROETHYL)BENZENEMETHANAMINE 2,3-Dichlorbenzoesure α,3,4-Trichlortoluol 2,5-Dichlorbenzoesaeure
Benzoic acid,2,4-dichloro- (8CI,9CI) 2,4-Dichlorbenzoic a 2,4-Dichlorobenzoic acid, 98% 100GR 2,4-Dichlorobenzoic acid, 98% 5GR Dichlorbenzoic aci 2,4- twochlorobenzoic acid 2, 4 - dichlorobenzene forMic acid 2.4-Dichlorobe 2,4-dichloro-benzoicaci Benzoic acid, 2,4-dichloro- AKOS BBS-00003747 2,4-DCBA 2,4-DICHLOROBENZOIC ACID 'LGC' (1305) RARECHEM AL BO 0324 2,4-Dichlorbenzoic acid Carbonyl Compounds Carboxylic Acids C7 Building Blocks 50-84-0 50-48-0 2,4-Dichlolrobenzoic Acid TETRASUL PESTANAL (2,4,4',5-TETRA- CHLOR 2,4-Dichlorobenzoicacid,98% 2,4-Dichlorobenzoic Furosemide EP Impurity E Furosemide Impurity 5(Furosemide EP Impurity E) - acid Building Blocks Carbonyl Compounds Carboxylic Acids Chemical Synthesis Organic Building Blocks Organic Building Blocks C7 Carbonyl Compounds Carboxylic Acids Alpha sort D DAlphabetic DIA - DIC Pesticides&Metabolites Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts Organic acids
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