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

ASTM-D5155 - 2019 EDITION - CURRENT
Show Complete Document History

Document Center Inc. is an authorized dealer of ASTM standards.
The following bibliographic material is provided to assist you with your purchasing decision:

Standard Test Methods for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates
ORDER

Price:

$63.00        


Want this as a site license?

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-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).

1.2 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.

Significance and Use

5.1 These test methods are to be used for research or for quality control to characterize isocyanates used in polyurethane products.

Keywords

isocyanates; isocyanates aromatic; methylene-bis-(4-phenylisocyanate); polymethylene polyphenylisocyanate; polyurethane; raw materials; test method; titration; toluene diisocyanate;

To find similar documents by ASTM Volume:

08.03 (Plastics (III): D5117 - latest; Reinforced Plastic Piping Systems and Chemical Equipment; Plastic Building Products)

To find similar documents by classification:

83.080.20 (Thermoplastic materials)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

 

Customers who bought this document also bought:

ASME-HST-5
Performance Standard for Air Chain Hoists

MIL-C-26482
Connectors, Electrical, (Circular, Miniature, Quick Disconnect, Environment Resisting)

CGA-C7
Guide to Classification and Labeling of Compressed Gases

Document Number

ASTM-D5155-19

Revision Level

2019 EDITION

Status

Current

Modification Type

Revision

Publication Date

Aug. 1, 2019

Document Type

Test Method

Page Count

6 pages

Committee Number

D20.22