ASTM-D6099 2008(Redline)

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D6099-08 Standard Test Method for Polyurethane Raw Materials: Determination of Acidity in Moderate to High Acidity Aromatic Isocyanates (Redline)

Published By	Publication Date	Number of Pages
ASTM	2008	4

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Description

Significance and Use

This test method can be used for research or for quality control to characterize aromatic isocyanates and prepolymers of moderate to high acidity. Acidity correlates with performance in some polyurethane systems.

1. Scope

1.1 This test method determines the acidity, expressed as parts per million (ppm) of HCl, in aromatic isocyanate samples of greater than 100 – ppm acidity. The test method is applicable to products derived from toluene diisocyanate and methylene- bis -(4 – phenylisocyanate) (see Note 1).

Note 1—This test method is equivalent to ISO 14898, Test Method A.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D883 Terminology Relating to Plastics E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ISO Standards

ISO14898 Plastics–Aromatic isocyanates for use in the production of polyurethane–Determination of acidity Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.

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Additional information

Standard Title	D6099-08 Standard Test Method for Polyurethane Raw Materials: Determination of Acidity in Moderate to High Acidity Aromatic Isocyanates (Redline)
Published Code	ASTM
Publication Date	2008
Pages Count	4

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ASTM-D6099 2008(Redline)

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