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ASTM D5442-17(2021)

(Test Method)

Standard Test Method for Analysis of Petroleum Waxes by Gas Chromatography

Standard Test Method for Analysis of Petroleum Waxes by Gas Chromatography

SIGNIFICANCE AND USE
5.1 The determination of the carbon number distribution of petroleum waxes and the normal and non-normal hydrocarbons in each can be used for control of production processes as well as a guide to performance in many end uses.  
5.2 Data resulting from this test method are particularly useful in evaluating petroleum waxes for use in rubber formulations.
SCOPE
1.1 This test method covers the quantitative determination of the carbon number distribution of petroleum waxes in the range from n-C17 through n-C44 by gas chromatography using internal standardization. In addition, the content of normal and non-normal hydrocarbons for each carbon number is also determined. Material with a carbon number above n-C44 is determined by its difference from 100 % by mass and reported as C45+.  
1.2 This test method is applicable to petroleum derived waxes, including blends of waxes. This test method is not applicable to oxygenated waxes, such as synthetic polyethylene glycols (for example, Carbowax2), or natural products such as beeswax or carnauba.  
1.3 This test method is not directly applicable to waxes with oil content greater than 10 % as determined by Test Method D721.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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 consult and establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 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.

General Information

Status
Published
Publication Date
30-Sep-2021
ICS
75.140 - Waxes, bituminous materials and other petroleum products
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.04.0H - Chromatographic Distribution Methods
Current Stage
Ref Project

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ASTM D5442-17(2021) - Standard Test Method for Analysis of Petroleum Waxes by Gas ChromatographyASTM D5442-17(2021) - Standard Test Method for Analysis of Petroleum Waxes by Gas Chromatography
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ASTM D5442-17(2021) - Standard Test Method for Analysis of Petroleum Waxes by Gas Chromatography
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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.
Designation: D5442 − 17 (Reapproved 2021)
Standard Test Method for
1
Analysis of Petroleum Waxes by Gas Chromatography
This standard is issued under the fixed designation D5442; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
3
2.1 ASTM Standards:
1.1 This test method covers the quantitative determination
D721 Test Method for Oil Content of Petroleum Waxes
of the carbon number distribution of petroleum waxes in the
D4307 Practice for Preparation of Liquid Blends for Use as
range from n-C through n-C by gas chromatography using
17 44
Analytical Standards
internal standardization. In addition, the content of normal and
D4626 Practice for Calculation of Gas Chromatographic
non-normal hydrocarbons for each carbon number is also
Response Factors
determined. Material with a carbon number above n-C is
44
E260 Practice for Packed Column Gas Chromatography
determined by its difference from 100 % by mass and reported
E355 Practice for Gas Chromatography Terms and Relation-
as C .
45+
ships
1.2 This test method is applicable to petroleum derived
3. Terminology
waxes, including blends of waxes. This test method is not
3.1 Definitions of Terms Specific to This Standard:
applicable to oxygenated waxes, such as synthetic polyethyl-
3.1.1 carbon number, n—a number corresponding to the
2
eneglycols(forexample,Carbowax ),ornaturalproductssuch
number of carbon atoms in a hydrocarbon.
as beeswax or carnauba.
3.1.2 cool on-column injection, n—a sample introduction
1.3 This test method is not directly applicable to waxes with
technique in gas chromatography where the sample is injected
oil content greater than 10 % as determined by Test Method inside the front portion of a partition column at a temperature
D721. at or below the boiling point of the most volatile component in
the sample.
1.4 The values stated in SI units are to be regarded as
3.1.3 low volume connector, n—a metal or glass union
standard. No other units of measurement are included in this
designed to connect two lengths of capillary tubing. Usually
standard.
designed so that the tubing ends are joined with a minimum of
1.5 This standard does not purport to address all of the either dead volume or overlap between them.
safety concerns, if any, associated with its use. It is the
3.1.4 non(normal paraffın)hydrocarbon (NON), n—all other
responsibility of the user of this standard to consult and
hydrocarbon types excluding those hydrocarbons with carbon
establish appropriate safety, health, and environmental prac- atoms in a single length. Includes aromatics, naphthenes, and
tices and determine the applicability of regulatory limitations branched hydrocarbon types.
prior to use.
3.1.5 normal paraffın, n—a saturated hydrocarbon which
has all carbon atoms bonded in a single length, without
1.6 This international standard was developed in accor-
branching or hydrocarbon rings.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3.1.6 wall coated open tube (WCOT), n—a term used to
Development of International Standards, Guides and Recom-
specify capillary columns in which the stationary phase is
mendations issued by the World Trade Organization Technical coated on the interior surface of the glass or fused silica tube.
Barriers to Trade (TBT) Committee. Stationary phase may be cross-linked or bonded after coating.
4. Summary of Test Method
4.1 Weighedquantitiesofthepetroleumwaxandaninternal
1
This test method is under the jurisdiction of ASTM Committee D02 on
standardarecompletelydissolvedinanappropriatesolventand
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.04.0H on Chromatographic Distribution Methods.
3
Current edition approved Oct. 1, 2021. Published November 2021. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 1993. Last previous edition approved in 2017 as D5442 – 17. DOI: contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
10.1520/D5442-17R21. Standards volume information, refer to the standard’s Document Summary page on
2
Carbowax is a registered trademark of Union Carbide Corp. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5442 − 17
...

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