18102

Benzoic acid

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

• Sinonimo/i: Benzenecarboxylic acid, Carboxybenzene
• Formula condensata: C₆H₅COOH
• Numero CAS: 65-85-0
• Peso molecolare: 122.12
• Beilstein: 636131
• Numero CE: 200-618-2
• Numero MDL: MFCD00002398
• Codice UNSPSC: 12352100
• ID PubChem: 57647710
• NACRES: NA.21

Proprietà

• Densità del vapore: 4.21 (vs air)
• Livello qualitativo: 200
• Tensione di vapore: 10 mmHg ( 132 °C)
• Saggio: 99.5-100.5% (alkalimetric)
• Forma fisica: crystalline
• Temp. autoaccensione: 1061 °F
• Qualità: meets analytical specification of Ph. Eur., BP, USP, FCC, E210
• Impurezze: oxidisable substances, complies; residual solvents, complies; ≤0.0005% heavy metals (as Pb); ≤0.03% halogen compounds (as Cl); ≤0.7% water (Karl Fischer)
• Residuo alla calcinazione: ≤0.05% (as SO₄)
• Perdita: ≤0.5% loss on drying, 3 h (via H₂SO₄)
• pH: 3-5 (20 °C, 0.1%)
• P. eboll.: 249 °C (lit.)
• Punto di fusione: 121-125 °C (lit.)
• Solubilità: water: soluble (2.9 g/l at 25 °C)
• Cationi in tracce: As: ≤3 mg/kg; Cu: ≤10 mg/kg; Hg: ≤1 mg/kg; Pb: ≤2 mg/kg; Zn: ≤20 mg/kg
• Compatibilità: complies for appearance of solution; complies for reaction against H₂SO₄
• Stringa SMILE: OC(=O)c1ccccc1
• InChI: 1S/C7H6O2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H,8,9); WPYMKLBDIGXBTP-UHFFFAOYSA-N

Descrizione

Descrizione generale

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.

Applicazioni

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.

Informazioni sulla sicurezza

• Pittogrammi: GHS08,GHS05
• Avvertenze: Danger
• Indicazioni di pericolo: H315,H318,H372
• Consigli di prudenza: P260 - P264 - P280 - P302 + P352 - P305 + P351 + P338 - P314
• Classi di pericolo: Eye Dam. 1 - Skin Irrit. 2 - STOT RE 1 Inhalation
• Organi bersaglio: Lungs
• Codice della classe di stoccaggio: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable
• Dispositivi di protezione individuale: dust mask type N95 (US), Eyeshields, Faceshields, Gloves