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ASTM D664-18e2
Standard Test Method for Acid Number of Petroleum Products by Potentiometric TitrationMore info
1.1 This test method covers procedures for the determination of acidic constituents in petroleum products, lubricants, biodiesel, and blends of biodiesel.
1.1.1 Test Method A—For petroleum products and lubricants soluble or nearly soluble in mixtures of toluene and propan-2-ol. It is applicable for the determination of acids whose dissociation constants in water are larger than 10–9; extremely weak acids whose dissociation constants are smaller than 10–9 do not interfere. Salts react if their hydrolysis constants are larger than 10–9. The range of acid numbers included in the precision statement is 0.1 mg/g KOH to 150 mg/g KOH.
| Author | ASTM |
|---|---|
| Editor | ASTM |
| Document type | Standard |
| Format | File |
| ICS | 75.080 : Petroleum products in general |
| Number of pages | 11 |
| Replace | ASTM D664-18e1 |
| Set | ASTMVOL0501 |
| Year | 2018 |
| Document history | ASTM D664-18e1 |
| Country | USA |
| Keyword | ASTM 664;ASTM D664;ASTM D664;10.1520/D0664-18E02 |