矿物油
"Mineral oil", sold widely and cheaply in the US, is not sold as such in Britain. Instead, British pharmacologists use the terms "paraffinum perliquidum" for light mineral oil and "paraffinum liquidum" or "paraffinum subliquidum" for somewhat more viscous varieties. The term "paraffinum liquidum" is often seen on the ingredient lists of baby oil and cosmetics. British aromatherapists commonly use the term "white mineral oil". In lubricating oils, mineral oil is termed from groups 1 to 2 worldwide and group 3 in certain regions. This is because the high end of group 3 mineral lubricating oils are so pure that they exhibit properties similar to polyalphaolefin – PAO oils (group 4 synthetics).