ASTM D5155-19
Standard Test Methods for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates

Standard No.

ASTM D5155-19

Release Date

2019

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D5155-19

Scope

1.1 These test methods are used to measure the isocyanate content of aromatic isocyanates used as polyurethane raw materials. 1.1.1 Test Method A—Unheated toluene-dibutylamine determines the toluene diisocyanate content, the amine equivalent and the isocyanate content of refined toluene-2,4-diisocyanate and toluene-2,6-diisocyanate, or mixtures of the two. Other isomers, if present, will be included in the determination. This test method is also applicable to other isocyanates of suitable reactivity and solubility. 1.1.2 Test Method B—Heated toluene-dibutylamine determines the amine equivalent and the isocyanate content of crude or modified isocyanates derived from toluene diisocyanate, methylene di-(4-phenylisocyanate) and polymeric (methylene phenylisocyanate). 1.1.3 Test Method C—Unheated trichlorobenzene-toluenedibutylamine determines the amine equivalent and the isocyanate content of crude or modified isocyanates derived from toluene diisocyanate, methylene-di-(4-phenylisocyanate) and polymeric (methylene phenylisocyanate). 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. NOTE 1—Method C of this test method is equivalent to Method B of ISO 14896. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D5155-19 Referenced Document

• ASTM D1193 Standard Specification for Reagent Water
• ASTM D883 Standard Terminology Relating to Plastics*， 2024-02-01 Update
• ASTM E180 Standard Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
• ASTM E2935 Standard Practice for Evaluating Equivalence of Two Testing Processes*， 2021-06-01 Update
• ASTM E456 Standard Terminology for Relating to Quality and Statistics
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• ISO 14896 Plastics - Polyurethane raw materials - Determination of isocyanate content

ASTM D5155-19 history

• 2019 ASTM D5155-19 Standard Test Methods for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates
• 2014 ASTM D5155-14e1 Standard Test Methods for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates
• 2014 ASTM D5155-14 Standard Test Methods for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates
• 2010 ASTM D5155-10 Standard Test Methods for Polyurethane Raw Materials Determination of the Isocyanate Content of Aromatic Isocyanates
• 2007 ASTM D5155-07 Standard Test Methods for Polyurethane Raw Materials Determination of the Isocyanate Content of Aromatic Isocyanates
• 2001 ASTM D5155-01 Standard Test Methods for Polyurethane Raw Materials Determination of the Isocyanate Content of Aromatic Isocyanates
• 1996 ASTM D5155-96 Standard Test Methods for Polyurethane Raw Materials Determination of the Isocyanate Content of Aromatic Isocyanates