ISO 3987:2024

Petroleum products — Determination of sulfated ash in lubricating oils and additives and fatty acid methyl esters ISO 3987:2024

Publication date:   Sep 16, 2024

General information

60.60 Standard published   Sep 16, 2024

ISO

ISO/TC 28 Petroleum and related products, fuels and lubricants from natural or synthetic sources

International Standard

75.100   Lubricants, industrial oils and related products

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Scope

This document describes a procedure for the determination of the mass percentage of sulfated ash from unused lubricating oils containing additives and from additive concentrates used in compounding. These additives usually contain one or more of the following metals: barium, calcium, magnesium, zinc, potassium, sodium and tin. The elements sulfur, phosphorus and chlorine can also be present in combined form. This document is also applicable to fatty acid methyl esters (FAME).
This test method is applicable to products having sulphated ash contents in the range mass fraction of 0,005 % to 25,00 %. Application of this procedure to sulfated ash levels below a mass fraction of 0,02 % is restricted to oil products containing ashless additives.
This document is not intended for the analysis of used engine oils containing lead, nor for the analysis of non-additive lubricating oils, for which ISO 6245 is suitable.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 3987:2010

WITHDRAWN
ISO 3987:2010/Cor 1:2011

NOW

PUBLISHED
ISO 3987:2024
60.60 Standard published
Sep 16, 2024