ASTM D847-08
(Test Method)Standard Test Method for Acidity of Benzene, Toluene, Xylenes, Solvent Naphthas, and Similar Industrial Aromatic Hydrocarbons
Standard Test Method for Acidity of Benzene, Toluene, Xylenes, Solvent Naphthas, and Similar Industrial Aromatic Hydrocarbons
SIGNIFICANCE AND USE
This test method is suitable for setting specifications, for use as an internal quality control tool, and for use in development or research work on industrial aromatic hydrocarbons and related materials. This test method gives an indication of residual acidity and is a measure of the quality of the finished product. It is an indication of the tendency of the product to corrode equipment.
SCOPE
1.1 This test method is intended for the detection of acidity and for the quantitative determination of acidity of benzene, toluene, xylenes, solvent naphthas, and similar industrial aromatic hydrocarbons.
1.2 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E 29.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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. For specific hazard statements see Section 8.
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Designation: D847 − 08
StandardTest Method for
Acidity of Benzene, Toluene, Xylenes, Solvent Naphthas,
1
and Similar Industrial Aromatic Hydrocarbons
This standard is issued under the fixed designation D847; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 2.2 Other Documents:
OSHA Regulations, 29CFR paragraphs 1910.1000 and
1.1 This test method is intended for the detection of acidity
3
1910.1200
and for the quantitative determination of acidity of benzene,
toluene, xylenes, solvent naphthas, and similar industrial aro-
3. Terminology
matic hydrocarbons.
3.1 Definitions:
1.2 In determining the conformance of the test results using
3.1.1 acidity, n—the number of milligrams of sodium hy-
this method to applicable specifications, results shall be
droxide consumed when 100 mL of the specimen are titrated
rounded off in accordance with the rounding-off method of
under the conditions prescribed in this test method.
Practice E29.
3.1.2 acid reaction, n—a characteristic of materials produc-
1.3 The values stated in SI units are to be regarded as
ing the acid-color of the indicator used under the conditions
standard. No other units of measurement are included in this
prescribed in this test method.
standard.
3.1.3 alkaline or basic reaction, n—a characteristic of the
1.4 This standard does not purport to address all of the
materials producing the alkali-color of the indicator used under
safety concerns, if any, associated with its use. It is the
the conditions prescribed in this test method.
responsibility of the user of this standard to establish appro-
4. Summary of Test Method
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific hazard
4.1 The acidity of aromatic hydrocarbons is detected and
statements see Section 8.
determined quantitatively using a sodium hydroxide titration
and a color change in a phenolphthalein indicator.
2. Referenced Documents
5. Significance and Use
2
2.1 ASTM Standards:
5.1 Thistestmethodissuitableforsettingspecifications,for
D1193 Specification for Reagent Water
use as an internal quality control tool, and for use in develop-
D3437 Practice for Sampling and Handling Liquid Cyclic
mentorresearchworkonindustrialaromatichydrocarbonsand
Products
related materials. This test method gives an indication of
E29 Practice for Using Significant Digits in Test Data to
residual acidity and is a measure of the quality of the finished
Determine Conformance with Specifications
product. It is an indication of the tendency of the product to
corrode equipment.
1
This test method is under the jurisdiction of ASTM Committee D16 on
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of 6. Interferences
Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their
6.1 Tests for acidity are not applicable in the presence of
Derivatives.
Current edition approved Dec. 1, 2008. Published December 2008. Originally contaminating acidic or alkaline gases, soaps, salts, or other
approved in 1945. Last previous edition approved in 2004 as D847 – 04. DOI:
compounds derived from the atmosphere or apparatus. The
10.1520/D0847-08.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. www.access.gpo.gov.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D847 − 08
container holding the specimen, and the apparatus, water, III of Specification D1193. Insert a stopper carrying a guard
indicator,andothermaterialsusedinthetestshallbechosenso tube of soda lime. Rinse a 200-mL flask with this distilled
that they themselves shall not appreciably affect the results. water,adda100-mLportion,andtitrateinaclosedsystemwith
Since new corks used in specimen bottles often are bleached 0.01 N NaOH solution: or heat to boiling and titrate immedi-
with oxalic acid, it is advisable to rinse them thoroughly and ately, taking care that the temperature does not fall below 80°C
check them for neutrality with the indicator used in the test. dur
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D847–96 (Reapproved 2000) Designation: D 847 – 08
Standard Test Method for
Acidity of Benzene, Toluene, Xylenes, Solvent Naphthas,
1
and Similar Industrial Aromatic Hydrocarbons
This standard is issued under the fixed designation D 847; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 Thistestmethodisintendedforthedetectionofacidityandforthequantitativedeterminationofacidityofbenzene,toluene,
xylenes, solvent naphthas, and similar industrial aromatic hydrocarbons.
1.2The following applies to all specified limits in this test method: for purposes of determining conformance with this test
method, an observed value or a calculated value shall be rounded off “to the nearest unit” in the last right-hand digit used in
expressing the specification limit, in accordance with the rounding-off method of Practice E29
1.2 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded
off in accordance with the rounding-off method of Practice E 29.
1.3
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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. For specific hazard statements see Section 8.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1193 Specification for Reagent Water
D 3437 Practice for Sampling and Handling Liquid Cyclic Products
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
2.2 Other Documents:
OSHA Regulations, 29CFR, Paragraphs 1910.1000 and 1910.1200 OSHA Regulations, 29CFR paragraphs 1910.1000 and
3
1910.1200
3. Terminology
3.1 Definitions:
3.1.1 acidityacidity, n—the number of milligrams of sodium hydroxide consumed when 100 mL of the specimen are titrated
under the conditions prescribed in this test method.
3.1.2 acid reactionacid reaction, n—a characteristic of materials producing the acid-color of the indicator used under the
conditions prescribed in this test method.
3.1.3 alkaline or basic reactionalkaline or basic reaction, n—a characteristic of the materials producing the alkali-color of the
indicator used under the conditions prescribed in this test method.
4. Summary of Test Method
4.1 The acidity of aromatic hydrocarbons is detected and determined quantitatively using a sodium hydroxide titration and a
color change in a phenolphthalein indicator.
1
This test method is under the jurisdiction of ASTM Committee D-16D16 on Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
Subcommittee D16.0AD16.01 on Benzene, Toluene, Xylenes, Cyclohexane, and Their Derivatives.
Current edition approved June 10, 1996.Dec. 1, 2008. PublishedAugust 1996.December 2008. Originally published as D847–45T.approved in 1945. Last previous edition
D847–91.approved in 2004 as D 847 – 04.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 11.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 06.04.
3
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D847–08
5. Significance and Use
5.1 This test method is suitable for setting specifications, for use as an internal quality control tool, and for use in development
orresearchworkonindustrialaromatichydrocarbonsandrelatedmaterials.Thistestmethodgivesanindicationofresidualacidity
and is a measure of the quality of the finished product. It is an indication of the tendency of the product to corrode equipment.
6. Interferen
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D847–04 Designation:D847–08
Standard Test Method for
Acidity of Benzene, Toluene, Xylenes, Solvent Naphthas,
1
and Similar Industrial Aromatic Hydrocarbons
This standard is issued under the fixed designation D 847; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 Thistestmethodisintendedforthedetectionofacidityandforthequantitativedeterminationofacidityofbenzene,toluene,
xylenes, solvent naphthas, and similar industrial aromatic hydrocarbons.
1.2In1.2 In determining the conformance of the test results using this method to applicable specifications, results shall be
rounded off in accordance with the rounding-off method of Practice E 29.
1.3
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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. For specific hazard statements see Section 8.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1193 Specification for Reagent Water
D 3437 Practice for Sampling and Handling Liquid Cyclic Products
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
2.2 Other Documents:
OSHA Regulations, 29CFR, Paragraphs 1910.1000 and 1910.1200OSHA Regulations, 29CFR paragraphs 1910.1000 and
3
1910.1200
3. Terminology
3.1 Definitions:
3.1.1 acidity, n—the number of milligrams of sodium hydroxide consumed when 100 mLof the specimen are titrated under the
conditions prescribed in this test method.
3.1.2 acid reaction, n—a characteristic of materials producing the acid-color of the indicator used under the conditions
prescribed in this test method.
3.1.3 alkaline or basic reaction, n—a characteristic of the materials producing the alkali-color of the indicator used under the
conditions prescribed in this test method.
4. Summary of Test Method
4.1 The acidity of aromatic hydrocarbons is detected and determined quantitatively using a sodium hydroxide titration and a
color change in a phenolphthalein indicator.
5. Significance and Use
5.1 This test method is suitable for setting specifications, for use as an internal quality control tool, and for use in development
orresearchworkonindustrialaromatichydrocarbonsandrelatedmaterials.Thistestmethodgivesanindicationofresidualacidity
1
This test method is under the jurisdiction ofASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcommittee
D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives.
Current edition approved JuneDec. 1, 2004.2008. Published July 2004.December 2008. Originally approved in 1945. Last previous edition approved in 19962004 as
D847–96(2000). D 847 – 04.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D847–08
and is a measure of the quality of the finished product. It is an indication of the tendency of the product to corrode equipment.
6. Interferences
6.1 Tests for acidity are not applicable in the presence of contaminating acidic or alkaline gases, soaps, salts, or other
compoundsderivedfromtheatmosphereorapparatus.Thecontainerholdingthespecimen,andtheapparatus,water,indicator,and
other materials used in the test shall be chosen so that they themselves shall not appreciably affect the results. Since new corks
used in specimen bottles often are bleached with oxalic acid, it is advisable to rinse them thoroughly and check them for neutr
...
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