HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
4-Brombenzoesure
P-BROMOBENZOIC ACID · Benzoic acid, p-bromo- · 4-bromo-benzoicaci · 4-Bromobenzoic aicd · Benzoicacid,4-bromo- · 'LGC' (4008) · Homarine HCL · 4-Brombenzoesure
Identifikatoren & physikalische Daten
| CAS No. | 586-76-5 |
|---|---|
| Summenformel | C7H5BrO2 |
| Durchschnittliche Molmasse | 201,02 g/mol |
| Monoisotopische Masse | 199,9472915 g/mol |
| SMILES | O=C(O)c1ccc(Br)cc1 |
| InChIKey | TUXYZHVUPGXXQG-UHFFFAOYSA-N |
| PubChem CID | 11464 |
| ChEMBL | CHEMBL22051 |
| ChEBI | CHEBI:60698 |
| EC No. | 209-581-7 |
| DTXSID | DTXSID7060413 |
| Lokaler Name | 4-Brombenzoesure |
Chemische & physikalische Eigenschaften
| XLogP | 2,9 |
|---|---|
| Polarare Oberfläche (TPSA) | 37,3 |
| H-Brücken-Donoren | 1 |
| H-Brücken-Akzeptoren | 2 |
| Frei drehbare Bindungen | 1 |
| Schwere Atome | 10 |
| Formalladung | 0 |
| Komplexität | 128 |
| Stoffklassen | Other Classes -> Benzoic Acid Derivatives |
| SpringerMaterials Properties | Crystal structure |
| LogP (Verteilungskoeffizient) | 2.86 |
| Schmelzpunkt | 473.9 °F (NTP, 1992)252-254 °C (lit.) |
| Physical Description | 4-bromobenzoic acid appears as colorless to red crystals. (NTP, 1992)Solid[Merck Index] Colorless to red solid[CAMEO] Beige powder[Aldrich MSDS] |
| Siedepunkt | 116 °C(Press: 15-16 Torr) |
| Dichte | 1,894 g/cm3 |
| Brechungsindex | 1.6080 (estimate) |
| Lagerbedingungen | Sealed in dry,Room Temperature |
| Löslichkeit | ethanol: soluble5%SOLUBLE IN HOT WATER |
| Aggregatzustand | Crystals or Powder |
| pKa (Säurekonstante) | 3.96(at 25℃) |
| Farbe | White to beige to pink-brownish |
| Merck | 14,1408 |
| BRN | 1906923 |
| Stabilität | Stable. Incompatible with strong oxidizing agents. |
| Kosmetik-Inhaltsstoffe Funktionen | SKIN CONDITIONING |
| InChI | 1S/C7H5BrO2/c8-6-3-1-5(2-4-6)7(9)10/h1-4H,(H,9,10) |
| InChIKey | TUXYZHVUPGXXQG-UHFFFAOYSA-N |
| SMILES | OC(=O)c1ccc(Br)cc1 |
| CAS Datenbank | 586-76-5(CAS DataBase Reference) |
| NIST chemische Informationen | Benzoic acid, 4-bromo-(586-76-5) |
| EPA chemische Informationen | 4-Bromobenzoic acid (586-76-5) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH302 (95.2%): Harmful if swallowed [Warning Acute toxicity, oral]P261, P262, P264, P264+P265, P270, P271, P273, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P316, P317, P319, P321, P330, P332+P317, P337+P317, P361+P364, P362+P364, P391, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 63 reports by companies from 13 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| Regulatorische Informationen | Chemical: Benzoic acid, 4-bromo-Benzoic acid, 4-bromo-: Does not have an individual approval but may be used under an appropriate group standard |
| Gesundheitsgefahren | ACUTE/CHRONIC HAZARDS: Explodes above its melting point. (NTP, 1992) |
| Gefahrenübersicht | An irritantHarmful by ingestion[Aldrich MSDS] |
| Reaktive Gruppe | Acids, Carboxylic |
| Reactivity Profile | 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 waterthose 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 it 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 |
Anwendungen & Verwendung
Verwenden
4-Bromobenzoic acid was used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography. It was used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry. It is also used as an intermediate for the synthesis of agrochemicals, pharmaceutical, chemical intermediates and liquid crystals.
Herstellung & Synthese
synthetische
4-Bromobenzoic acid is obtained by the reaction of p-bromotoluene with glacial acetic acid as the molten agent and oxygen as the oxidant, utilising a liquid-phase oxidation catalytic method under the action of a catalyst. The catalyst is a combination of acetic acid cobalt, manganese acetate, and bromide compounds.