ASTM-D8045 2023

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D8045-17(2023) Standard Test Method for Acid Number of Crude Oils and Petroleum Products by Catalytic Thermometric Titration

Published By	Publication Date	Number of Pages
ASTM	2023

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Category: ASTM

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Description

ASTM D8045-17-Reapproved2023

Active Standard: Standard Test Method for Acid Number of Crude Oils and Petroleum Products by Catalytic Thermometric Titration

ASTM D8045

Scope

1.1 This test method covers the determination of acidic components in crude oil and petroleum products including waxes, bitumen, base stocks, and asphalts that are soluble in mixtures of xylenes 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. The values obtained by this test method may not be numerically equivalent to other acid value measurements. The range of KOH acid numbers included in the precision statement is 0.1 mg/g to 16 mg/g.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Some specific hazards statements are given in Section 7 on Safety Precautions.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

acid number; corrosion; crude oil; naphthenic acids; thermometric titration;

ICS Code

ICS Number Code 75.040 (Crude petroleum)

DOI: 10.1520/D8045-17R23

Additional information

Standard Title	D8045-17(2023) Standard Test Method for Acid Number of Crude Oils and Petroleum Products by Catalytic Thermometric Titration
Published Code	ASTM
Publication Date	2023