Standard Test Method for Determination of Free Formaldehyde in Emulsion Polymers by Liquid Chromatography

SIGNIFICANCE AND USE
With the need to calculate free formaldehyde levels in emulsion polymers, it is necessary to make the determination without upsetting any equilibria that might generate or deplete formaldehyde. This test method provides a means for determining ppm levels of free formaldehyde in emulsion polymers without upsetting existing equilibria.
SCOPE
1.1 This test method is used for the determination of free formaldehyde (HCHO) in emulsion polymers without upsetting existing formaldehyde equilibria. The procedure has been evaluated using acrylic, acrylonitrile-butadiene, carboxylated styrene-butadiene and polyvinyl acetate emulsion polymers. This test method may also be applicable for emulsion polymers of other compositions. The established working range of this test method is from 0.05 to 15 ppm formaldehyde. Emulsion polymers must be diluted to meet the working range.
1.2 This test method minimizes changes in free formaldehyde concentration that can result from changes in the physical or chemical properties of an emulsion polymer.
1.3 There are no known limitations to this test method when used in the manner described. The emulsion polymer test specimen must be prepared with a diluent that has a pH similar to that of the emulsion. Use of an inappropriate pH may upset formaldehyde equilibria and result in incorrect formaldehyde levels.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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

Status
Historical
Publication Date
30-Sep-2005
Current Stage
Ref Project

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ASTM D5910-05 - Standard Test Method for Determination of Free Formaldehyde in Emulsion Polymers by Liquid Chromatography
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5910 − 05
StandardTest Method for
Determination of Free Formaldehyde in Emulsion Polymers
1
by Liquid Chromatography
This standard is issued under the fixed designation D5910; 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 D2194 Test Method for Concentration of Formaldehyde
Solutions
1.1 This test method is used for the determination of free
E180 Practice for Determining the Precision of ASTM
formaldehyde (HCHO) in emulsion polymers without upset-
Methods for Analysis and Testing of Industrial and Spe-
ting existing formaldehyde equilibria. The procedure has been
3
cialty Chemicals (Withdrawn 2009)
evaluated using acrylic, acrylonitrile-butadiene, carboxylated
E682 Practice for Liquid Chromatography Terms and Rela-
styrene-butadiene and polyvinyl acetate emulsion polymers.
tionships
Thistestmethodmayalsobeapplicableforemulsionpolymers
of other compositions. The established working range of this
3. Summary of Test Method
test method is from 0.05 to 15 ppm formaldehyde. Emulsion
3.1 The aqueous phase of an emulsion polymer is diluted
polymers must be diluted to meet the working range.
and chromatographed on a reversed-phase octadecyl silane
1.2 This test method minimizes changes in free formalde-
(ODS) column using an aqueous mobile phase and a visible-
hyde concentration that can result from changes in the physical
light detector at 410 nm. Formaldehyde is separated from other
or chemical properties of an emulsion polymer.
species in the matrix on a chromatographic column. The
1.3 There are no known limitations to this test method when
detection system includes a post-column reactor that produces
used in the manner described. The emulsion polymer test
a lutidine derivative when formaldehyde reacts with the
specimen must be prepared with a diluent that has a pH similar
2,4-pentanedione reagent (Nash Reagent). The concentration
to that of the emulsion. Use of an inappropriate pH may upset
offreeformaldehydeinemulsionpolymersisdeterminedusing
formaldehyde equilibria and result in incorrect formaldehyde
peak areas from the standard and sample chromatograms. This
levels.
test method is specific for formaldehyde.
1.4 The values stated in SI units are to be regarded as
4. Significance and Use
standard. No other units of measurement are included in this
standard. 4.1 With the need to calculate free formaldehyde levels in
emulsion polymers, it is necessary to make the determination
1.5 This standard does not purport to address all of the
without upsetting any equilibria that might generate or deplete
safety concerns, if any, associated with its use. It is the
formaldehyde. This test method provides a means for deter-
responsibility of the user of this standard to establish appro-
mining ppm levels of free formaldehyde in emulsion polymers
priate safety and health practices and determine the applica-
without upsetting existing equilibria.
bility of regulatory limitations prior to use.
5. Interferences
2. Referenced Documents
2
5.1 This test method is very selective for formaldehyde.
2.1 ASTM Standards:
Potential interferants are either chromatographically separated
D1193 Specification for Reagent Water
from formaldehyde or do not react with the post-column
reagent.
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
NOTE 1—The following species were identified as possible interfer-
Subcommittee D01.33 on Polymers and Resins.
ences for the method: acetaldehyde, acetone, benzaldehyde, formamide,
Current edition approved Oct. 1, 2005. Published January 2006. Originally
formic acid, glyoxylic acid and propionaldehyde. These species, when
approved in 1996. Last previous edition approved in 1996 as D5910 – 96 which was
chromatographed using this test method, did not interfere with the
withdrawn December 2004 and reinstated in October 2005. DOI: 10.1520/D5910-
formaldehyde peak at the 1000 ppm level or lower.
05.
2
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
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D5910 − 05
5.2 Because emulsion polymers vary in composition, the 8. Configurat
...

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