ASTM D5627-94(2009)
(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 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5627–94(Reapproved 2009)
Standard Test Method for
Water Extractable Residue from Particulate Ion-Exchange
Resins
This standard is issued under the fixed designation D5627; 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 contact time, the concentration of soluble material in the
aqueous phase is measured gravimetrically after filtration.
1.1 This test method covers the measurement of water
soluble extractable residue from particulate ion-exchange res-
5. Significance and Use
ins based on elevated temperature extraction and gravimetric
5.1 The presence of water extractables in ion-exchange
determination of residue.
resins can cause fouling of other materials downstream and
1.2 The values stated in SI units are to be regarded as
contamination of process water. The quantity of water extract-
standard. No other units of measurement are included in this
ables is sometimes used as a specification to indicate resin
standard.
quality, and typical values are 0.01 to 0.1 %.
1.3 This standard does not purport to address all of the
5.2 It is recognized that this test method may not remove all
safety concerns, if any, associated with its use. It is the
potential sloughage products and does not measure volatile
responsibility of the user of this standard to establish appro-
compounds. More extensive extraction and identification of
priate safety and health practices and determine the applica-
compounds may be needed in specific cases.
bility of regulatory limitations prior to use.
6. Interferences
2. Referenced Documents
2 6.1 The hygroscopic nature of some extracted compounds
2.1 ASTM Standards:
can make it difficult to obtain a constant weight. Other
D1129 Terminology Relating to Water
extraction times and temperatures may give results that are not
D1193 Specification for Reagent Water
comparable to these.
D2187 Test Methods for Physical and Chemical Properties
of Particulate Ion-Exchange Resins
7. Apparatus
D2687 Practices for Sampling Particulate Ion-Exchange
7.1 Funnel, 60 mL with coarse frit.
Materials
7.2 Filtration assembly.
D2777 Practice for Determination of Precision and Bias of
7.3 Glass fiber filters, without binder, pre-rinsed with wa-
Applicable Test Methods of Committee D19 on Water
ter.
7.4 Weighing vessel—Platinum, nickel, or aluminum may
3. Terminology
beusedsolongasthereisnoattackbythesampleandconstant
3.1 Definitions:
weight can be achieved.
3.1.1 For definitions of terms used in this test method, refer
7.5 Water bath, for use at 60 6 1°C.
to Terminology D1129.
8. Reagents
4. Summary of Test Method
8.1 Purity of Reagents—Reagent grade chemicals shall be
4.1 A sample of particulate ion exchange material is con-
used in all tests. Unless otherwise indicated, it is intended that
tacted with water at an elevated temperature. After a specified
all reagents shall conform to the specifications of the Commit-
tee onAnalytical Reagents of theAmerican Chemical Society,
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
Exchange Materials.
Current edition approved May 1, 2009. Published June 2009. Originally
approved in 1994. Last previous edition approved in 2004 as D5627 – 94 (2004).
DOI: 10.1520/D5627-94R09.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on Gelman Type A/E, Millipore Type AP40, Whatman GF/C, or equivalent, have
the ASTM website. been found suitable for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D5627–94 (2009)
where such specifications are available. Other grades may be 11. Calculation
used, provided it is first ascertained that the reagent is of
11.1 Calculate the water extractable residue, in percent, for
sufficiently high purity to permit its use without lessening the
each of the two sample portions as follows:
accuracy of the determination.
~A 2 B! 3 200
8.2 Purity of Water—Unless otherwise indicated, references
Water Extractable Residue, % wet basis 5
C
to water shall be understood to mean reagent water conforming
to Specification D1193, Type I or lI.
~A 2 B! 3 200
Water Extractable Residue, % dry basis 5
D
9. Sampling
C 3
S D
9.1 Collect the sample in accordance with Practices D2687.
In-service resins are taken after reg
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.