ASTM-D4273 2011

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D4273-11 Standard Test Method for Polyurethane Raw Materials: Determination of Primary Hydroxyl Content of Polyether Polyols

Published By	Publication Date	Number of Pages
ASTM	2011	8

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Categories: 83.080.20 - Thermoplastic materials, ASTM

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Description

1.1 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 best suited for polyethers with primary hydroxyl contents of 10 to 90 %.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 1There is no known ISO equivalent to this standard.

X1.1.1 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.

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PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Method Significance and Use Interferences Equipment Reagents Standards
2	Preparation of Sample Instrument Preparation NMR Analysis Calculation Report FIG. 1
3	FIG. 2 FIG. 3 FIG. 4
4	Precision and Bias Keywords X1. FLUORINE-19 NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY METHOD FOR DETERMINATION OF PRIMARY HYDROXYL CONTENT OF POLYETHER POLYOLS X1.1 Scope X1.2 Summary of Test Method TABLE 1 TABLE 2
5	X1.3 Equipment X1.4 Reagents and Materials X1.5 Standards X1.6 Preparation of Sample X1.7 Instrument Preparation X1.8 NMR Analysis
6	X1.9 Mixtures of Polyethers and Chain Extenders X1.10 Calculation FIG. X1.1 FIG. X1.2
7	X1.11 Report X1.12 Precision and Bias FIG. X1.3

Additional information

Standard Title	D4273-11 Standard Test Method for Polyurethane Raw Materials: Determination of Primary Hydroxyl Content of Polyether Polyols
Published Code	ASTM
Publication Date	2011
Pages Count	8
ICS Codes	83.080.20 - Thermoplastic materials

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