ASTM D2222-94(1999)

Standard Test Method for Methanol Extract of Vinyl Chloride Resins

SCOPE
1.1 This test method covers the determination of the methanol extract, or nonvolatile methanol-soluble portion, of vinyl chloride resins.  
1.2 The values stated in SI units are to be regarded as the 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.  Note 1-There are no ISO standard covering the primary subject matter of this ASTM standard.

General Information

• Status: Historical
• Publication Date: 09-Jul-1999
• ICS: 83.080.10 - Thermosetting materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Replaced By: ASTM D2222-94(2004) - Standard Test Method for Methanol Extract of Vinyl Chloride Resins
• Effective Date: 01-May-2004

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 2222 – 94 (Reapproved 1999)
Standard Test Method for
Methanol Extract of Vinyl Chloride Resins
This standard is issued under the fixed designation D 2222; 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 ingredient removed is the soap system employed in the
polymerization reaction; methanol extract provides a measure
1.1 This test method covers the determination of the metha-
of lot-to-lot uniformity of the resin in this respect.
nol extract, or nonvolatile methanol-soluble portion, of vinyl
chloride resins.
6. Apparatus
1.2 The values stated in SI units are to be regarded as the
6.1 Soxhlet Extractor.
standard.
6.2 Extraction Thimbles, 33 by 94-mm.
1.3 This standard does not purport to address all of the
6.3 Oven, Constant-Temperature, maintained at 105 6 3°C.
safety concerns, if any, associated with its use. It is the
6.4 Electric Heating Mantle for a 250-mL extractor flask,
responsibility of the user of this standard to establish appro-
or electric strip heaters, equipped with a suitable variable
priate safety and health practices and determine the applica-
transformer to control the rate of heating.
bility of regulatory limitations prior to use.
NOTE 1—There are no ISO standard covering the primary subject 7. Reagents
matter of this ASTM standard.
7.1 Purity of Reagents—Reagent grade chemicals shall be
used in all tests. Unless otherwise indicated, it is intended that
2. Referenced Documents
all reagents shall conform to the specifications of the Commit-
2.1 ASTM Standards:
tee on Analytical Reagents of the American Chemical Society,
D 883 Terminology Relating to Plastics
where such specifications are available. Other grades may be
D 1600 Terminology of Abbreviated Terms Relating to
used, provided it is first ascertained that the reagent is of
Plastics
sufficiently high purity to permit its use without lessening the
accuracy of the determination.
3. Terminology
3.1 Definitions: Definitions are in accordance with Termi-
8. Procedure
nologies D 883 and D 1600 unless otherwise indicated.
8.1 Weigh to the nearest 0.001 g approximately 12 g of the
resin sample into an empty extraction thimble.
4. Summary of Test Method
8.2 Cover the resin in the thimble with a small pad of glass
4.1 The methanol-soluble materials are extracted from the
wool to prevent spattering of resin during the extraction and
resin in a Soxhlet extractor, the methanol evaporated to
place the thimble in the extractor.
dryness, and the residue weighed as the weight percent
8.3 Weigh to the nearest 0.001 g and record the tare weight
methanol extract.
of a clean, dry, flat-bottom, extractor flask containing a Raschig
ring.
5. Significance and Use
8.4 Add 200 mL of anhydrous methanol to the flask and
5.1 The methanol extract test is most commonly employed
connect the flask to the extractor.
with paste- or dispersion-type vinyl resins intended for orga-
nosol or plastisol applications. The test result is a quantitative
measure of the methanol-soluble, nonvolatile, essentially non-
Corning Glass Co. No. 3840, Fisher Scientific Co. No. 9-556 (Size B), or
polymeric content of the virgin, unmodified resin. The major
equivalent have been found satisfactory for this purpose.
Fisher Scientific Co. No. 9-655, or equivalent, has been found satisfactory for
this purpose.
1 5
This test method is under the jurisdiction of ASTM Committee D-20 on Plastics Reagent Chemicals, America
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