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| | p-Tolualdehyde Basic information |
| | p-Tolualdehyde Chemical Properties |
| Melting point | -6 °C | | Boiling point | 204-205 °C (lit.)
82-85 °C/11 mmHg (lit.) | | density | 1.019 g/mL at 25 °C (lit.) | | vapor pressure | 0.33 hPa (25 °C) | | FEMA | 3068 | TOLUALDEHYDES (MIXED O,M,P) | | refractive index | n20/D 1.545(lit.) | | Fp | 176 °F | | storage temp. | Store below +30°C. | | solubility | water: soluble0.25 g/L at 25°C | | form | Liquid | | color | Clear colorless to yellow | | Odor | at 5.00 % in dipropylene glycol. fruity cherry deep phenolic | | Odor Type | fruity | | explosive limit | 0.9-5.6%(V) | | Water Solubility | 0.25 g/L (25 ºC) | | Sensitive | Air Sensitive | | BRN | 385772 | | InChIKey | FXLOVSHXALFLKQ-UHFFFAOYSA-N | | LogP | 2.25 | | CAS DataBase Reference | 104-87-0(CAS DataBase Reference) | | NIST Chemistry Reference | Benzaldehyde, 4-methyl-(104-87-0) | | EPA Substance Registry System | 4-Methylbenzaldehyde (104-87-0) |
| | p-Tolualdehyde Usage And Synthesis |
| Chemical Properties | clear colorless to pale yellow liquid | | Uses | p-Tolualdehyde is made by the Vilsmeier reaction employing
toluene and dimethylformamide or the Guttermann–Koch
reaction employing toluene and carbon monoxide. | | Uses | p-Tolualdehyde is used as an intermediate for the synthesis of pharmaceuticals, dyes perfumes and agrochemicals. It is also used as a fixative of flavorings. It is also used as an important organic intermediates, used for spices, triphenylmethane dye synthesis, etc. | | Uses | p-Tolualdehyde may be used as an analytical reference standard for the quantification of the analyte in the following:
- Air samples using high-performance liquid chromatography with UV detection (HPLC-UV).
- Mango cultivars using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS).
| | Definition | ChEBI: A tolualdehyde compound with the methyl substituent at the 4-position. | | Synthesis Reference(s) | Journal of the American Chemical Society, 105, p. 7175, 1983 DOI: 10.1021/ja00362a028
Tetrahedron Letters, 29, p. 6265, 1988 DOI: 10.1016/S0040-4039(00)82321-7 | | General Description | p-Tolualdehyde (4-Methylbenzaldehyde) is an aromatic aldehyde. It has been generated as major oxygenated product during the UV light irradiated oxygenation of p-xylene, via photoinduced electron transfer mechanism. It undergoes condensation reaction with diiron μ-ethylidyne complex to afford μ-vinylcarbyne complex (92% yield). | | Flammability and Explosibility | Notclassified | | Purification Methods | Steam distil the aldehyde, dry it with CaSO4, then fractionally distil it. [Beilstein 7 IV 672.] |
| | p-Tolualdehyde Preparation Products And Raw materials |
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