PPG-2 C9-11 Pareth-5 is the polypropylene glycol ether a mixture of synthetic C9-11 ethoxylated fatty alcohols containing an average of 5 moles of ethylene oxide and 2 moles of propylene oxide.

JCIA 표시명 ＰＰＧ－２（Ｃ９－１１）パレス－５: 本品は、炭素数９～１１の合成脂肪族アルコールのポリオキシエチレンとポリオキシプロピレンエーテルであり、酸化エチレンと酸化プロピレンの平均付加モル数は５及び２である。

출처: Japan Cosmetic Industry Association labelling names

Other restriction: ban substances that deplete the ozone layer

출처: European Commission CosIng

Reviewed by CIR: Safety Assessment of Alkyl PEG/PPG Ethers as Used in Cosmetics

출처: Cosmetic Ingredient Review