Astm D 4864 – 90 (Reapproved 2000)e1 pdf free download

Standard Test Method for
Determination of Traces of Methanol in Propylene
Concentrates by Gas Chromatography1

This standard is issued under the fixed designation D 4864; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the 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.

This standard has been approved for use by agencies of the Department of Defense.

1. Scope

1.1 This test method covers the determination of methanol
in propylene concentrates in the range of approximately 4 to 40
mg/kg (parts-per-million by weight).

1.2 The values stated in acceptable SI units are to be
regarded as the standard.
NOTE 1—There is no direct acceptable SI equivalent for screw threads.

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. Specific hazard
statements are given in 11.1.1 and 12.11.

2. Referenced Documents

2.1 ASTM Standards:
D 4307 Practice for Preparation of Liquid Blends for Use as
Analytical Standards2
E 260 Practice for Packed Column Gas Chromatography3

3. Terminology

3.1 Definitions:

3.1.1 propylene concentrate—concentrate containing more
than 90 % propylene.

3.2 Definitions of Terms Specific to This Standard:

3.2.1 outage tube—a length of 6.35-mm (1⁄4 in.) outside
diameter SS tubing normally attached to the inside end of a
valve used on a pressure sampling cylinder. It is used to
facilitate the removal of a set quantity of liquified samples to
prevent overpressuring the cylinder.

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