Allyl propyl disulfide is an organosulfur compound with the chemical formula C3H5S2C3H7. It is a volatile pale-yellow liquid with a strong odor. It is a major component of onion oil and is used in food additives and flavors. This substance is present in garlic and onion. When onion or garlic is sliced, the substance evaporates and causes eyes to irritate. When garlic or onion is cooked, it also evaporates, ridding them of the spicy taste, and leaving sweet taste in them.

CAS：2179-59-1
中文别名：烯丙基丙基二硫化物;烯丙基丙基二硫;二硫化丙基丙烯;
英文别名：Allyl-propyl-disulfid;ALLYL PROPYL DISULFIDE;4,5-Dithia-1-octene;2-propenyl-1-propyl disulfide;propyl allyl disulfide;Disulfide, 2-propenyl propyl;Allyl propyl disulfide;allyl-propyl-disulfane;Allyl propyl disulphide;Propenyl propyl disulfide;Disulfide,2-propenyl propyl;Disulfide,allyl propyl;
分子式：C6H12S2
分子量：148.289
精确质量：148.038
Psa：50.6
Logp：2.9638

EINECS号：218-550-7
MDL号：MFCD00040072
BRN号：1744005
RTECS号：JO0350000

外观与性状：透明淡黄色液体带有一种辛辣气味
密度：0.99
沸点：69 °C / 16mmHg
熔点：-15°C
闪点：56 °C
折射率：1.5219 (20ºC)
水溶解性：Insoluble.
储存条件：库房通风低温干燥,与食品原料分开存放
蒸汽压：1.35mmHg at 25°C

RTECS号：JO0350000
危险品运输编码：1993
海关编码：2930909090
危险类别：3.2
包装等级：III