18102

Benzoesäure

meets analytical specification of Ph. Eur., BP, USP, FCC, E210, 99.5-100.5% (alkalimetric)

• Synonym(e): Benzenecarboxylic acid, Carboxybenzene
• Lineare Formel: C₆H₅COOH
• CAS-Nummer: 65-85-0
• Molekulargewicht: 122.12
• Beilstein: 636131
• EG-Nummer: 200-618-2
• MDL-Nummer: MFCD00002398
• UNSPSC-Code: 12352100
• PubChem Substanz-ID: 57647710
• NACRES: NA.21

Eigenschaften

• Dampfdichte: 4.21 (vs air)
• Qualitätsniveau: 200
• Dampfdruck: 10 mmHg ( 132 °C)
• Assay: 99.5-100.5% (alkalimetric)
• Form: crystalline
• Selbstzündungstemp.: 1061 °F
• Qualität: meets analytical specification of Ph. Eur., BP, USP, FCC, E210
• Verunreinigungen: oxidisable substances, complies; residual solvents, complies; ≤0.0005% heavy metals (as Pb); ≤0.03% halogen compounds (as Cl); ≤0.7% water (Karl Fischer)
• Glührückstand: ≤0.05% (as SO₄)
• Verlust: ≤0.5% loss on drying, 3 h (via H₂SO₄)
• pH-Wert: 3-5 (20 °C, 0.1%)
• bp: 249 °C (lit.)
• mp (Schmelzpunkt): 121-125 °C (lit.)
• Löslichkeit: water: soluble (2.9 g/l at 25 °C)
• Kationenspuren: As: ≤3 mg/kg; Cu: ≤10 mg/kg; Hg: ≤1 mg/kg; Pb: ≤2 mg/kg; Zn: ≤20 mg/kg
• Eignung: complies for appearance of solution; complies for reaction against H₂SO₄
• SMILES String: OC(=O)c1ccccc1
• InChI: 1S/C7H6O2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H,8,9)
• InChIKey: WPYMKLBDIGXBTP-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

Benzoic acid is an aromatic monocarboxylic acid. It occurs in the form of colorless leaflets or needles. It reacts with hydrogenating reagents to afford hexahydrobenzoic acid. On decomposition (by heating) in the presence of lime or alkali, it affords benzene and carbon dioxide. It can be synthesized by the cobalt or manganese catalyzed atmospheric oxidation of toluene.

Anwendung

Benzoic acid may be employed as a standard in the quantitative and calorimetric studies. It may be employed as an intermediate in the synthesis of the following:

• paints
• pigments
• varnish
• wetting agents
• aroma compounds
• benzoyl chloride
• benzotrichloride

It was used to investigate the mechanism of complex addition reaction of hydroxyl radicals with various aromatic compounds.

Sicherheitshinweise

• Piktogramme: GHS08,GHS05
• Signalwort: Danger
• H-Sätze: H315,H318,H372
• P-Sätze: P260 - P264 - P280 - P302 + P352 - P305 + P351 + P338 - P314
• Gefahreneinstufungen: Eye Dam. 1 - Skin Irrit. 2 - STOT RE 1 Inhalation
• Zielorgane: Lungs
• Lagerklassenschlüssel: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Faceshields, Gloves