For this, you'll need to read the labels. Most foods labeled as organic would not be using preservatives. But I understand that there are a few preservatives that could be considered organic. I...
It is an emulsifier and a surfactant. An emulsifier makes fat droplets small enough to mix evenly in a water-based solution. A surfactant reduces surface tension. (Lecithin does this in the lungs)
I don't know what the numbers mean, but I do know that soy lecithin is used as an emulsifier and as a thickener. Soy lecithin is sold in health and natural food stores.