4-Methylbenzaldehyde is a simple aromatic aldehyde. It is commercially available, but may be prepared from the Friedel-Crafts formylation of toluene with carbon monoxide and hydrogen chloride under Gattermann-Koch conditions:. 4-Methylbenzaldehyde has a cherry-like scent similar to benzaldehyde.

CAS：104-87-0
中文别名：4-甲基苯甲醛;
英文别名：p-Tolualdehyde;Benzaldehyde, 4-methyl-;4-Methylbenzaldehyde;p-Methyl benzaldehyde;4-methylbenzaldehyde;
分子式：C8H8O
分子量：120.149
精确质量：120.058
Psa：17.07
Logp：1.8075

MDL号：MFCD00006954
EINECS号：203-246-9
PubChem号：24901194
RTECS号：CU7034500
BRN号：385772

外观与性状：透明至淡黄色液体
密度：1.019g/mLat 25°C(lit.)
沸点：204-205°C(lit.)
熔点：-6 °C
闪点：176°F
折射率：n20/D 1.545(lit.)
水溶解性：0.25 g/L (25 ºC)
稳定性：Stable under normal temperatures and pressures.
储存条件：Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
蒸汽压：0.263mmHg at 25°C

RTECS号：CU7034500
安全说明：S26-S36-S37/39
WGK Germany：1
危险类别码：R22; R36/38
海关编码：2912299000
包装等级：I; II; III
危险品标志：Xn

生产方法
1. 以甲苯为原料,先氯甲基化,然后再按照Sommelet反应方法,可获得对甲基苯甲醛。 农药、医药中间体。
用途
农药、医药中间体。