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ASTM-D4671:2005 Edition

ASTM-D4671:2005 Edition

$35.75

D4671-05 Standard Test Method for Polyurethane Raw Materials Determination of Unsaturation of Polyols

Published By Publication Date Number of Pages
ASTM 2005 4
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1.1 These test methods measure unsaturation in polyether polyols. (See Note 0.)

1.1.1 Test Method A, High-Volume Reagent MethodUses about 50 mL of 0.1 M mercuric acetate reagent in methanol and 15 g or more of sample. These test methods use an indicator for colorimetric determination of an end point. It is recommended for polyols with low values (below 0.01 millequivalents per gram (meq/g)) of unsaturation where large sample sizes are required.

1.1.2 Test Method B, Low-Volume Reagent MethodUses 2 mL of ca. 0.05 M mercuric acetate reagent in methanol and about 1 g of sample or less. These test methods use a potentiometric determination of an end point.

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 0

There is no equivalent ISO standard.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
Summary of Test Method
Significance and Use
Interferences
2 Apparatus
Reagents
Procedure
Calculation
Precision and Bias
Apparatus
Reagents
3 Procedure
Calculation
Report
Precision and Bias
4 Keywords
TABLE 1
TABLE 2

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