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Benzaldehyde is commonly employed as a precursor to prepare various organic compounds, which are used as pharmaceuticals, dyes, perfumes, flavorings, photographic chemicals and plastic additives. It is used as solvent for oils and resins. Benzaldehyde is further used as a building block for a range of amino acids like phenylglycine, which is used as a side chain in various antibiotics. It is involved as a brightener in zinc electroplating processes, and as a food and fragrance additive. It is active intermediate for the manufacture of benzoic acid, odorants and flavoring chemicals.
For use in protection of amines as benzylidine imines, readily cleaved by acid hydrolysis or hydrogenolysis, see, e.g.: Synthesis, 963 (1989); Synlett, 161 (1990); Org. Synth. Coll., 7, 8 (1990).
Also used for protection of 1,2- and 1,3-diols as cyclic benzylidene acetals, e.g. by azeotroping in the presence of TsOH: J. Am. Chem. Soc., 104, 7036 (1982). See also Benzaldehyde dimethyl acetal, A11009.
Sarma, B. B.; Efremenko, I.; Neumann, R. Oxygenation of Methylarenes to Benzaldehyde Derivatives by a Polyoxometalate Mediated Electron Transfer-Oxygen Transfer Reaction in Aqueous Sulfuric Acid. J. Am. Chem. Soc. 2015, 137 (18), 5916-5922.
Buonaugurio, A.; Zhang, X.; Stokes, S. T.; Wang, Y.; Ellison, G. B.; Bowen, K. H. The photoelectron spectrum of the benzaldehyde anion. Int. J. Mass Spectrom. 2015, 377. 278-280.
Hazard Statements: H227-H302+H332-H319-H335
Combustible liquid. Harmful if swallowed. Harmful if inhaled. Causes serious eye irritation. May cause respiratory irritation.
Precautionary Statements: P210-P235-P260-P264b-P270-P271-P280-P301+P312-P304+P340-P305+P351+P338-P312-P314-P330-P337+P313-P370+P378q-P501c
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep cool. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Get medical advice/attention if you feel unwell. Rinse mouth. If eye irritation persists: Get medical advice/attention. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant