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ASTM D1387-89(2019)

(Test Method)

Standard Test Method for Saponification Number (Empirical) of Synthetic and Natural Waxes

Standard Test Method for Saponification Number (Empirical) of Synthetic and Natural Waxes

SIGNIFICANCE AND USE
4.1 This test method is used to determine the property of ester functionality. Ester functionality determines the utility of the wax as well as being a significant quality control test.
SCOPE
1.1 This test method covers the determination of the saponification number of synthetic waxes and natural waxes.  
1.2 This test method is applicable to Fischer Tropsche, microcrystalline, polyethylene, and Montan Ester waxes.  
1.3 Certain synthetic waxes, notably copolymers of ethylene, exhibit poor reproducibility when running saponification values. Reproducibility can be improved if cooking time in 7.2 is extended from 3 h to 18–20 h.  
1.4 Some oxidized polyethylene and other waxes with a melt temperature above 100°C may give poor reproducibility.  
1.5 Some dark-colored (Gardner Color 14) waxes may obscure the color change of the indicator, resulting in poor reproducibility.  
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 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.  
1.8 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-Jun-2019
ICS
75.140 - Waxes, bituminous materials and other petroleum products
Technical Committee
D21 - Polishes
Drafting Committee
D21.02 - Raw Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D1387-89(2012) - Standard Test Method for Saponification Number (Empirical) of Synthetic and Natural Waxes
Effective Date
01-Jul-2019

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ASTM D1387-89(2019) - Standard Test Method for Saponification Number (Empirical) of Synthetic and Natural WaxesASTM D1387-89(2019) - Standard Test Method for Saponification Number (Empirical) of Synthetic and Natural Waxes
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ASTM D1387-89(2019) - Standard Test Method for Saponification Number (Empirical) of Synthetic and Natural Waxes
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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:D1387 −89(Reapproved 2019)
Standard Test Method for
Saponification Number (Empirical) of Synthetic and Natural
Waxes
This standard is issued under the fixed designation D1387; 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 E200 Practice for Preparation, Standardization, and Storage
of Standard and Reagent Solutions for ChemicalAnalysis
1.1 This test method covers the determination of the saponi-
fication number of synthetic waxes and natural waxes.
3. Terminology
1.2 This test method is applicable to Fischer Tropsche,
3.1 Definitions:
microcrystalline, polyethylene, and Montan Ester waxes.
3.1.1 saponification number—the number of milligrams of
1.3 Certain synthetic waxes, notably copolymers of
potassium hydroxide required to hydrolyze1gofthe sample
ethylene, exhibit poor reproducibility when running saponifi-
and is a measure of the amount of saponifiable matter present.
cation values. Reproducibility can be improved if cooking time
4. Significance and Use
in 7.2 is extended from3hto 18–20 h.
4.1 This test method is used to determine the property of
1.4 Some oxidized polyethylene and other waxes with a
ester functionality. Ester functionality determines the utility of
melt temperature above 100°C may give poor reproducibility.
the wax as well as being a significant quality control test.
1.5 Some dark-colored (Gardner Color 14) waxes may
obscure the color change of the indicator, resulting in poor
5. Apparatus
reproducibility.
5.1 Analytical Balance.
1.6 The values stated in SI units are to be regarded as
5.2 Boiling Chips, chemically resistant glass.
standard. No other units of measurement are included in this
standard. 5.3 Burets, two 50-mL capacity with 0.1-mL graduations.
1.7 This standard does not purport to address all of the
5.4 Erlenmeyer Flasks, 250-mL, alkali-resistant.
safety concerns, if any, associated with its use. It is the
5.5 Hot Plate.
responsibility of the user of this standard to establish appro-
5.6 Reflux Condenser.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
6. Reagents and Materials
1.8 This international standard was developed in accor-
dance with internationally recognized principles on standard- 6.1 Purity of Reagents—Reagent-grade chemicals or
ization established in the Decision on Principles for the
equivalent as specified in Practice E200 shall be used in all
Development of International Standards, Guides and Recom- tests.
mendations issued by the World Trade Organization Technical
6.2 Hydrochloric Acid Standard (0.5 N).
Barriers to Trade (TBT) Committee.
6.3 Phenolphthalein Indicator Solution (10 g/litre)—
Dissolve1gof phenolphthalein in 100 mL of USSD3A
2. Referenced Documents
denatured ethanol or 95 % ethanol.
2.1 ASTM Standards:
6.4 Potassium Hydroxide, Alcoholic Solution (6.6 g/litre)—
Dissolve 6.6 g of potassium hydroxide (KOH) in USSD3A
denatured ethanol or 95 % ethanol. Dilute to 1 L with the
ThistestmethodisunderthejurisdictionofASTMCommitteeD21onPolishes
and is the direct responsibility of Subcommittee D21.02 on Raw Materials. ethanol.
Current edition approved July 1, 2019. Published July 2019. Originally approved
6.5 Xylene.
in 1955. Last previous edition approved in 2012 as D1387 – 89(2012). DOI:
10.1520/D1387-89R19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 7. Procedure
cont
...

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5.1 Petroleum waxes differ in hardness. Needle penetration is a measurement of hardness. Hardness may have a significant effect upon other physical properties.
SCOPE
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SCOPE
1.1 This test method covers the determination of solvent extractables in petroleum waxes.  
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5.1 Roofing and waterproofing materials and systems undergo changes in physical properties as a result of being subjected to heat. They also undergo changes in physical properties as they age in service. Since service conditions vary widely, any relationship between changes observed in this practice and changes in service must be established by the user of this practice.
SCOPE
1.1 This practice establishes a procedure and conditions of temperature and time for heat exposure of roofing and waterproofing materials and systems in the presence of air.  
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