Use of oils comprising non-neurotoxic anti-wear additives

A method for manufacturing an oil that is able to and/or configured to lubricate a machine and/or a device, said method comprising the following steps:

• incorporating into a base oil, at least one anti-wear agent selected from a polyphosphorus compound of formula (I):
• wherein
• each of R1, R2, R3 and R4 is independently selected from:
• an alkyl, O-alkyl, aryl, or O-aryl group,
• A is a divalent group selected from a linear alkylene group comprising 7 to 36 carbon atoms or a branched alkylene group comprising 6 to 36 carbon atoms, a monocyclic, polycyclic or polyaromatic arylene group, or aralkylene group,
• each of X1, and X2 is independently a single bond, an oxygen atom or a nitrogen atom, and
• n is an integer ranging between 1 and 5,
• wherein the at least one polyphosphorus compound of formula (I) has a risk level in terms of neurotoxicity corresponding to a score of 0 or to a score of 1 and is capable of and/or is configured to reduce and/or prevent the neurotoxicity of the oil.

A method for lubricating a machine and/or a device for reducing the neurotoxicity of an oil, comprising the following steps:

• providing the oil comprising at least one anti-wear agent selected from a polyphosphorus compound of formula (I):
• wherein
• each of R1, R2, R3 and R4 is independently selected from:
• an alkyl, O-alkyl, aryl, or O-aryl group,
• A is a divalent group selected from a linear alkylene group comprising 7 to 36 carbon atoms or a branched alkylene group comprising 6 to 36 carbon atoms, a monocyclic, polycyclic or polyaromatic arylene group, or aralkylene group,
• each of X1, and X2 is independently a single bond, an oxygen atom or a nitrogen atom, and
• n is an integer ranging between 1 and 5,
• applying an effective amount of said oil to said machine and/or device,
• wherein the at least one polyphosphorus compound of formula (I) has a risk level in terms of neurotoxicity corresponding to a score of 0 or to a score of 1 and is capable of and/or is configured to reduce and/or to prevent the neurotoxicity of the oil.