I have contact with these, and I have not encountered the precipitation of the situation, but the effect of the inside of the PVC film is unknown, but according to my experience, should be the smaller the particles, the more unlikely to be precipitated, the following briefly about the situation of the various plasticizers:
DOP (dioctyl phthalate) is the most commonly used plasticizers, DINP or DIDP, the price is about the same as DOP, performance is better, and used in wires to be better than DOP aging performance. DOTP, does not contain phthalic acid (salt) of the environmentally friendly plasticizers, the price is a little more expensive than DOP, but for non-medical, edible products, it is recognized as an environmentally friendly plasticizers, the most cost-effective, and with DOP performance. The highest, and with DOP performance is similar, almost no difference. DINCH, Mesamoll and other plasticizers higher level of environmental protection, performance is not inferior to DOP, but the price is also higher.