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Sulfated Ash
Definition:
Sulfated Ash can be used to indicate the concentration of known metal-containing additives in new oils. When phosphorus is absent, barium, calcium, magnesium, sodium and potassium are converted to their sulfates and tin (stannic) and zinc to their oxides. Sulfur and chlorine do not interfere, but when phosphorus is present with metals, it remains partially or wholly in the sulfated ash as metal phosphates.
Standard Test Method Used:
Reporting Measurement:
Mass %
Amount of Sample Needed:
100 mL
Test Limitation:
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