ASTM D4773-02
(Test Method)Standard Test Method for Purity of Propylene Glycol Monomethyl Ether, Dipropylene Glycol Monomethyl Ether, and Propylene Glycol Monomethyl Ether Acetate
Standard Test Method for Purity of Propylene Glycol Monomethyl Ether, Dipropylene Glycol Monomethyl Ether, and Propylene Glycol Monomethyl Ether Acetate
SCOPE
1.1 This test method covers the determination by gas chromatography of propylene glycol monomethyl ether (PM), dipropylene glycol monomethyl ether (DPM), and propylene glycol monomethyl ether acetate (PMA).
Note 1—Propylene glycol monomethyl ether (PM) is a mixture of two isomers: 1-methoxy-2-propanol and 2-methoxy-1-propanol.
Dipropylene glycol monomethyl ether (DPM) is a mixture of four isomers: 1-(2-methoxy-1-methylethoxy)-2-propanol is one of the major isomers.
Propylene glycol monomethyl ether acetate (PMA) is a mixture of two isomers: 1-methoxy-2-acetoxypropane and 2-methoxy-1-acetoxypropane.
1.1.1 This test method covers the determination of PM in the range from 98 to 100 %, and DPM in the range from 0.08 to 0.6 %.
1.1.2 This test method covers the determination of DPM in the range from 98 to 100 %, PM in the range from 0.05 to 0.3 %, and tripropylene glycol monomethyl ether (TPM) in the range from 0.06 to 0.3 %.
1.1.3 This test method covers the determination of PMA in the range from 99 to 100 %, and PM in the range from 0.03 to 1.0 %.
1.2 Water and acid cannot be determined by this test method and must be measured in accordance with Test Methods D 1364 and D 1613, and the results used to normalize the chromatographic data.
1.3 The following applies to all specified limits in this standard; for purposes of determining conformance with this standard, 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 E 29.
1.4 For hazard information and guidance, see the supplier's Material Safety Data Sheet.
1.5 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)
Designation: D 4773 – 02
Standard Test Method for
Purity of Propylene Glycol Monomethyl Ether, Dipropylene
Glycol Monomethyl Ether, and Propylene Glycol
1
Monomethyl Ether Acetate
This standard is issued under the fixed designation D 4773; 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 * responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1.1 This test method covers the determination by gas
bility of regulatory limitations prior to use.
chromatography of propylene glycol monomethyl ether (PM),
dipropylene glycol monomethyl ether (DPM), and propylene
2. Referenced Documents
glycol monomethyl ether acetate (PMA).
2.1 ASTM Standards:
NOTE 1—Propylene glycol monomethyl ether (PM) is a mixture of two
D 1364 Test Method for Water in Volatile Solvents (Karl
isomers: 1-methoxy-2-propanol and 2-methoxy-1-propanol.
2
Fischer Reagent Titration Method)
Dipropylene glycol monomethyl ether (DPM) is a mixture of four
D 1613 Test Method for Acidity in Volatile Solvents and
isomers: 1-(2-methoxy-1-methylethoxy)-2-propanol is one of the major
Chemical Intermediates Used in Paint, Varnish, Lacquer,
isomers.
2
and Related Products
Propylene glycol monomethyl ether acetate (PMA) is a mixture of two
isomers: 1-methoxy-2-acetoxypropane and 2-methoxy-1-acetoxypropane. E 29 Practice for Using Significant Digits in Test Data to
3
Determine Conformance with Specifications
1.1.1 This test method covers the determination of PM in
the range from 98 to 100 %, and DPM in the range from 0.08
3. Summary of Test Method
to 0.6 %.
3.1 A representative sample of PM, DPM, or PMA contain-
1.1.2 This test method covers the determination of DPM in
ing the appropriate internal standard is injected into a capillary
the range from 98 to 100 %, PM in the range from 0.05 to
gas chromatograph and the components are detected with a
0.3 %, and tripropylene glycol monomethyl ether (TPM) in the
flame ionization detector. Quantification is made by peak area
range from 0.06 to 0.3 %.
measurement using internal standardization and a computing
1.1.3 This test method covers the determination of PMA in
integrator.
the range from 99 to 100 %, and PM in the range from 0.03 to
1.0 %.
4. Significance and Use
1.2 Water and acid cannot be determined by this test method
4.1 This test method is used to determine the purity of PM,
and must be measured in accordance with Test Methods
DPM, and PMA by subtracting calculated total impurities from
D 1364 and D 1613, and the results used to normalize the
100 %.
chromatographic data.
4.2 This test method is used to determine the quantity of
1.3 The following applies to all specified limits in this
residual glycol ether present in PMA.
standard; for purposes of determining conformance with this
4.3 This test method is used for identifying various impu-
standard, an observed value or a calculated value shall be
rities in PM, DPM, and PMA.
rounded off “to the nearest unit” in the last right-hand digit
used in expressing the specification limit, in accordance with
5. Apparatus
the rounding-off method of Practice E 29.
5.1 Chromatograph—Any programmed temperature gas
1.4 For hazard information and guidance, see the supplier’s
chromatograph designed or modified for use with capillary
Material Safety Data Sheet.
columns. The chromatograph must also be equipped with a
1.5 This standard does not purport to address all of the
flame ionization detector.
safety concerns, if any, associated with its use. It is the
5.2 Column—Capillary, 5 μm thick film, 10 m by 0.32 mm
inside diameter, fused silica coated, with 5 % phenyl methyl
silicon liquid phase.
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates.
2
Current edition approved May 10, 2002. Published July 2002. Originally Annual Book of ASTM Standards, Vol 06.04.
3
published as D 4773 – 88. Last previous edition D 4773 – 93 (1998). Annual Book of ASTM Standards, Vol 14.02.
*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.
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D 4773
5.3 Syringe—10 μL or equivalent to introduce a represen- 7.1.3 Propylene Glycol Monomethyl Ether Acetate
tative sample onto the column. (PMA)—Weigh into a vial to within 0.1 mg, 10.00 g of PMA
5.4 Computing Integator, capable of peak summation and a calibration standard (see 6.3.5) and 0.04 g of PM. Check these
baseline construction. reagents for purity under the conditions
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