ASTM-D7098 2008

$44.96

D7098-08e1 Standard Test Method for Oxidation Stability of Lubricants by Thin-Film Oxygen Uptake (TFOUT) Catalyst B

Published By	Publication Date	Number of Pages
ASTM	2008	10

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Category: ASTM

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Description

ASTM D7098-08e1

Historical Standard: Standard Test Method for Oxidation Stability of Lubricants by Thin-Film Oxygen Uptake (TFOUT) Catalyst B

ASTM D7098

Scope

1.1 This test method covers the oxidation stability of lubricants by thin-film oxygen uptake (TFOUT) Catalyst B. This test method evaluates the oxidation stability of petroleum products, and it was originally developed as a screening test to indicate whether a given re-refined base stock could be formulated for use as automotive engine oil (see Test Method D4742). The test is run at 160°C in a pressure vessel under oxygen pressure, and the sample contains a metal catalyst package, a fuel catalyst, and water to partially simulate oil conditions in an operating engine. In addition, the test method has since been found broadly useful as an oxidation test of petroleum products.

1.2 The applicable range of the induction time is from a few minutes up to several hundred minutes or more. However, the range of induction times used for developing the precision statements in this test method was from 40 to 280 min.

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

1.3.1 Exception—Pressure units are provided in psig, and dimensions are provided in inches in Annex A1 and Annex A2, because these are the industry accepted standard and the apparatus is built according to the figures shown.

1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

oxidation stability; sequence IIIE engine simulation; TFOUT; Lubricants; Oxidation stability; Thin-film oxygen uptake (TFOUT)

ICS Code

ICS Number Code 75.100 (Lubricants, industrial oils and related products)

DOI: 10.1520/D7098-08E01

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Method
2	Significance and Use Apparatus Reagents FIG. 1
3	Materials Preparation of Apparatus Procedure
4	Report Precision and Bias Keywords A1. THIN FILM OXYGEN UPTAKE TEST USING THE RBOT/TFOUT APPARATUS A1.1 Pressure Vessel
5	A1.2 Pressure Vessel Assembly and Charging FIG. A1.1 FIG. A1.2 FIG. A1.3
6	A1.3 Oxidation A1.4 Aluminum Insert A1.5 Glass Sample Container A1.6 Gauge A1.7 Oxidation Bath A1.8 Thermometer FIG. A1.4
7	A2. THIN FILM OXYGEN UPTAKE TEST USING THE DESIGNED TFOUT APPARATUS A2.1 Pressure Oxidation Vessel A2.2 Oxidation Chamber A2.3 Drive Tube A2.4 Impeller/Lock Ring A2.5 O-ring Gaskets A2.6 Glass Reaction Dish A2.7 Pressure Vessel Assembly and Charging FIG. A2.1 FIG. A2.2 FIG. A2.3
8	A2.8 Oxidation A2.9 Oxidation Bath A2.10 A2.11 Recorder A2.12 Thermometer A3. PREPARATION OF THE FUEL COMPONENT A3.1 A3.2 A3.3 Distillation A3.4 Oxidation/Nitration A3.5 Reduction of Acidity FIG. A2.4 FIG. A3.1
9	A3.6 A3.7 A4. PREPARATION OF THE SOLUBLE METAL CATALYST MIXTURE A4.1 A4.2 Materials A4.3 Metal Content A4.4 Mixing of Metal Naphthenates A4.5 Composition of the Metals A4.6 A5. CLEANING PROCEDURE FOR CATALYST SYRINGES A5.1 A5.2 Materials A5.3 A5.4
10	A5.5

Additional information

Standard Title	D7098-08e1 Standard Test Method for Oxidation Stability of Lubricants by Thin-Film Oxygen Uptake (TFOUT) Catalyst B
Published Code	ASTM
Publication Date	2008
Pages Count	10