18102

Acide benzoique

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

• Synonyme(s) : Benzenecarboxylic acid, Carboxybenzene
• Formule linéaire : C₆H₅COOH
• Numéro CAS: 65-85-0
• Poids moléculaire : 122.12
• Numéro Beilstein : 636131
• Numéro CE : 200-618-2
• Numéro MDL: MFCD00002398
• Code UNSPSC : 12352100
• ID de substance PubChem : 57647710
• Nomenclature NACRES : NA.21

Propriétés

• Densité de vapeur: 4.21 (vs air)
• Niveau de qualité: 200
• Pression de vapeur: 10 mmHg ( 132 °C)
• Pureté: 99.5-100.5% (alkalimetric)
• Forme: crystalline
• Température d'inflammation spontanée: 1061 °F
• Qualité: meets analytical specification of Ph. Eur., BP, USP, FCC, E210
• Impuretés: oxidisable substances, complies; residual solvents, complies; ≤0.0005% heavy metals (as Pb); ≤0.03% halogen compounds (as Cl); ≤0.7% water (Karl Fischer)
• Résidus de calcination: ≤0.05% (as SO₄)
• Perte: ≤0.5% loss on drying, 3 h (via H₂SO₄)
• pH: 3-5 (20 °C, 0.1%)
• Point d'ébullition: 249 °C (lit.)
• Pf: 121-125 °C (lit.)
• Solubilité: water: soluble (2.9 g/l at 25 °C)
• Traces de cations: As: ≤3 mg/kg; Cu: ≤10 mg/kg; Hg: ≤1 mg/kg; Pb: ≤2 mg/kg; Zn: ≤20 mg/kg
• Adéquation: complies for appearance of solution; complies for reaction against H₂SO₄
• Groupe fonctionnel: carboxylic acid; phenyl
• Chaîne SMILES: OC(=O)c1ccccc1
• InChI: 1S/C7H6O2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H,8,9)
• Clé InChI: WPYMKLBDIGXBTP-UHFFFAOYSA-N

Description

Description générale

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.

Application

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.

Informations sur la sécurité

• Pictogrammes: GHS08,GHS05
• Mention d'avertissement: Danger
• Mentions de danger: H315,H318,H372
• Conseils de prudence: P260 - P264 - P280 - P302 + P352 - P305 + P351 + P338 - P314
• Classification des risques: Eye Dam. 1 - Skin Irrit. 2 - STOT RE 1 Inhalation
• Organes cibles: Lungs
• Code de la classe de stockage: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: dust mask type N95 (US), Eyeshields, Faceshields, Gloves