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ASTM D 7157 : 2022 : EDT 1

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Standard Test Method for Determination of Intrinsic Stability of Asphaltene-Containing Residues, Heavy Fuel Oils, and Crude Oils (n-Heptane Phase Separation; Optical Detection)

Available format(s)

Hardcopy , PDF

Superseded date

30-03-2023

Superseded by

ASTM D 7157 : 2023

Language(s)

English

Published date

05-09-2022

$135.86
Including GST where applicable

Committee
D 02
DocumentType
Test Method
Pages
12
ProductNote
ε1NOTE—Editorial corrections made throughout in September 2022.
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1This test method covers a procedure for quantifying the intrinsic stability of the asphaltenes in an oil by an automatic instrument using an optical device.

1.2This test method is applicable to residual products from thermal and hydrocracking processes, to products typical of Specifications D396 Grades No. 5L, 5H, and 6, and D2880 Grades No. 3-GT and 4-GT, and to crude oils, providing these products contain 0.5 % by mass or greater concentration of asphaltenes (see Test Method D6560).

1.3This test method quantifies asphaltene stability in terms of state of peptization of the asphaltenes (S-value), intrinsic stability of the oily medium (So) and the solvency requirements of the peptized asphaltenes (Sa).

1.4The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5This 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.

1.6This 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.

ASTM D 4870 : 2018 Standard Test Method for Determination of Total Sediment in Residual Fuels
ASTM D 4175 : 2022 Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
ASTM D 4175 : 2022 : REV A Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
ASTM D 4175 : 2022 : EDT 1 Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
ASTM D 4870 : 2022 Standard Test Method for Determination of Total Sediment in Residual Fuels
ASTM D 4057 : 2022 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
ASTM D 6560 : 2022 Standard Test Method for Determination of Asphaltenes (Heptane Insolubles) in Crude Petroleum and Petroleum Products

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