18102

Benzoesäure

99.5-100.5% (alkalimetric), crystalline, 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
• NACRES: NA.21
• PubChem Substance ID: 57647710
• UNSPSC Code: 12352100
• EC Number: 200-618-2
• MDL number: MFCD00002398
• Beilstein/REAXYS Number: 636131
• eCl@ss: 39023903
• Assay: 99.5-100.5% (alkalimetric)
• Form: crystalline

Eigenschaften

• Produktname: Benzoesäure, meets analytical specification of Ph. Eur., BP, USP, FCC, E210, 99.5-100.5% (alkalimetric)
• vapor density: 4.21 (vs air)
• Quality Level: 200
• vapor pressure: 10 mmHg ( 132 °C)
• assay: 99.5-100.5% (alkalimetric)
• form: crystalline
• autoignition temp.: 1061 °F
• quality: meets analytical specification of Ph. Eur., BP, USP, FCC, E210
• impurities: oxidisable substances, complies, residual solvents, complies, ≤0.0005% heavy metals (as Pb), ≤0.03% halogen compounds (as Cl), ≤0.7% water (Karl Fischer)
• ign. residue: ≤0.05% (as SO₄)
• loss: ≤0.5% loss on drying, 3 h (via H₂SO₄)
• pH: 3-5 (20 °C, 0.1%)
• bp: 249 °C (lit.)
• mp: 121-125 °C (lit.)
• solubility: water: soluble (2.9 g/l at 25 °C)
• cation traces: As: ≤3 mg/kg, Cu: ≤10 mg/kg, Hg: ≤1 mg/kg, Pb: ≤2 mg/kg, Zn: ≤20 mg/kg
• suitability: complies for appearance of solution, complies for reaction against H₂SO₄
• functional group: carboxylic acid, phenyl
• SMILES string: OC(=O)c1ccccc1
• InChI: 1S/C7H6O2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H,8,9)
• InChI key: WPYMKLBDIGXBTP-UHFFFAOYSA-N

Beschreibung

General description

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.

Sicherheitshinweise

• pictograms: GHS08,GHS05
• signalword: Danger
• hcodes: H315,H318,H372
• pcodes: P260 - P264 - P280 - P302 + P352 - P305 + P351 + P338 - P314
• Hazard Classifications: Eye Dam. 1 - Skin Irrit. 2 - STOT RE 1 Inhalation
• target_organs: Lungs
• Lagerklasse: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Faceshields, Gloves