Standard Historical Last Updated: Aug 16, 2017 Track Document
ASTM D4273-99

Standard Test Methods for Polyurethane Raw Materials Determination of Primary Hydroxyl Content of Polyether Polyols

Standard Test Methods for Polyurethane Raw Materials Determination of Primary Hydroxyl Content of Polyether Polyols D4273-99 ASTM|D4273-99|en-US Standard Test Methods for Polyurethane Raw Materials Determination of Primary Hydroxyl Content of Polyether Polyols Standard new BOS Vol. 08.02 Committee D20
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Scope

1.1 Test Method A-Fluorine-19 Nuclear Magnetic Resonance Spectroscopy (fluorine-19 NMR), measures the primary hydroxyl content in ethylene oxide-propylene oxide polyethers used in flexible urethane foams. It is suitable for polyethers with hydroxyl numbers of 24 to 300 and primary hydroxyl percentages of 2 to 98.

1.2 Test Method B-Carbon-13 Nuclear Magnetic Resonance Spectroscopy (carbon-13 NMR), measures the primary hydroxyl content of ethylene-oxide-propylene oxide polyethers used in preparing flexible foams. It is suitable for polyethers with hydroxyl numbers of 24 to 109 and primary hydroxyl contents of 10 to 90% (see Note 1).

Note 1-There are no equivalent ISO standards.

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.

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Details
Book of Standards Volume: 08.02
Developed by Subcommittee: D20.22
Pages: 7
DOI: 10.1520/D4273-99
ICS Code: 83.080.20