ASTM D5627-94(2004)
(Test Method)Standard Test Method for Water Extractable Residue from Particulate Ion-Exchange Resins
Standard Test Method for Water Extractable Residue from Particulate Ion-Exchange Resins
SIGNIFICANCE AND USE
The presence of water extractables in ion-exchange resins can cause fouling of other materials downstream and contamination of process water. The quantity of water extractables is sometimes used as a specification to indicate resin quality, and typical values are 0.01 to 0.1 %.
It is recognized that this test method may not remove all potential sloughage products and does not measure volatile compounds. More extensive extraction and identification of compounds may be needed in specific cases.
SCOPE
1.1 This test method covers the measurement of water soluble extractable residue from particulate ion-exchange resins based on elevated temperature extraction and gravimetric determination of residue.
1.2 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.
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Standards Content (Sample)
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Designation:D5627–94(Reapproved 2004)
Standard Test Method for
Water Extractable Residue from Particulate Ion-Exchange
Resins
This standard is issued under the fixed designation D 5627; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Significance and Use
1.1 This test method covers the measurement of water 5.1 The presence of water extractables in ion-exchange
soluble extractable residue from particulate ion-exchange res- resins can cause fouling of other materials downstream and
ins based on elevated temperature extraction and gravimetric contamination of process water. The quantity of water extract-
determination of residue. ables is sometimes used as a specification to indicate resin
1.2 This standard does not purport to address all of the quality, and typical values are 0.01 to 0.1 %.
safety concerns, if any, associated with its use. It is the 5.2 It is recognized that this test method may not remove all
responsibility of the user of this standard to establish appro- potential sloughage products and does not measure volatile
priate safety and health practices and determine the applica- compounds. More extensive extraction and identification of
bility of regulatory limitations prior to use. compounds may be needed in specific cases.
2. Referenced Documents 6. Interferences
2.1 ASTM Standards: 6.1 The hygroscopic nature of some extracted compounds
D 1129 Terminology Relating to Water can make it difficult to obtain a constant weight. Other
D 1193 Specification for Reagent Water extraction times and temperatures may give results that are not
D 2187 Test Methods for Physical and Chemical Properties comparable to these.
of Particulate Ion-Exchange Resins
7. Apparatus
D 2687 Practices for Sampling Particulate Ion-Exchange
Materials 7.1 Funnel, 60 mL with coarse frit.
D 2777 Practice for Determination of Precision and Bias of 7.2 Filtration assembly.
7.3 Glass fiber filters, without binder, pre-rinsed with wa-
Applicable Methods of Committee D19 on Water
ter.
3. Terminology
7.4 Weighing vessel—Platinum, nickel, or aluminum may
3.1 Definitions: beusedsolongasthereisnoattackbythesampleandconstant
3.1.1 For definitions of terms used in this test method, refer weight can be achieved.
to Terminology D 1129. 7.5 Water bath, for use at 60 6 1°C.
4. Summary of Test Method 8. Reagents
4.1 A sample of particulate ion exchange material is con- 8.1 Purity of Reagents—Reagent grade chemicals shall be
tacted with water at an elevated temperature. After a specified used in all tests. Unless otherwise indicated, it is intended that
contact time, the concentration of soluble material in the all reagents shall conform to the specifications of the Commit-
aqueous phase is measured gravimetrically after filtration. tee onAnalytical Reagents of theAmerican Chemical Society,
where such specifications are available. Other grades may be
This test method is under the jurisdiction of ASTM Committee D19 on Water
and is the direct responsibility of Subcommittee D19.08 on Membranes and Ion Gelman Type A/E, Millipore Type AP40, Whatman GF/C, or equivalent, have
Exchange Materials. been found suitable for this purpose.
Current edition approved June 1, 2004. Published June 2004. Originally Reagent Chemicals, American Chemical Society Specifications, American
approved in 1994. Last previous edition approved in 1998 as D 5627 – 94 (1998). Chemical Society, Washington, DC. For suggestions on the testing of reagents not
For referenced ASTM standards, visit the ASTM website, www.astm.org, or listed by the American Chemical Society, see Analar Standards for Laboratory
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Standards volume information, refer to the standard’s Document Summary page on and National Formulary, U.S. Pharmaceutical Convention, Inc. (USPC), Rockville,
the ASTM website. MD.
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D5627–94 (2004)
used, provided it is first ascertained that the reagent is of ~A 2 B! 3 200
Water Extractable Residue, % wet basis 5
C
sufficiently high purity to permit its use without lessening the
accuracy of the determination.
8.2 Purity of Water—Unless otherwise indicated, references ~A 2 B! 3 200
Water Extractable Residue, % dry
...
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