GB/T 2433-2001
Petroleum products-Lubricating oils and additives-Determination of sulphated ash (English Version)
- Standard No.
- GB/T 2433-2001
- Language
- Chinese, Available in English version
- Release Date
- 2001
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 2433-2001
- Scope
- 1.1 This standard specifies the method for determining the mass fraction of sulfated ash in unused lubricating oils containing additives and additive concentrates used for blending lubricating oils. These additives usually contain one or more metals: barium, calcium, magnesium, zinc, potassium, sodium and tin elements. The elements sulfur, phosphorus and chlorine are present in combined form. 1.2 The lower limit of the mass fraction of sulfated ash determined in this standard is 0.005%. This standard applies only to lubricating oils containing only ashless additives when the sulfated ash content is less than 0.02%. 1.3 This standard does not apply to the determination of used engine oils containing lead additives, nor does it apply to lubricating oils without additives. For these oils, GB/T508 can be used. 1.4 Sulfated ash can be used to indicate the concentration of known metal-containing additives in new lubricating oils. In the absence of phosphorus, barium, calcium, magnesium, sodium, potassium are converted to sulfates, tin(IV) and zinc are converted to their oxides (see note), sulfur and chlorine do not interfere. But when phosphorus is present with metal additives, it remains partially or completely in the sulfated ash in the form of metal phosphates. 1.5 This standard deals with certain hazardous materials, operations and equipment. It is not intended, however, to advise on all security issues related to this. Therefore, users should establish appropriate safety and protective measures and determine the applicable management system before using this standard.
GB/T 2433-2001 history
- 2001 GB/T 2433-2001 Petroleum products-Lubricating oils and additives-Determination of sulphated ash
