ASTM D4661-03
Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates

Standard No.

ASTM D4661-03

Release Date

2003

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D4661-09

Latest

ASTM D4661-23

Scope

These test methods can be used for research or for quality control to determine the total chlorine content of aromatic isocyanates. In some instances total chlorine content may correlate with performance in polyurethane systems.

1.1 These test methods determine the total chlorine content of aromatic isocyanates used as polyurethane raw materials. The difference between the total chlorine content and the hydrolyzable chlorine content (see Test Method D 4663) is a measure of the amount of o-dichlorobenzene and other ring-substituted chlorinated products that are present. Both procedures are applicable to a variety of organic compounds but the amount of sample used may have to be varied. (See Note 1.)

1.2 The values stated in SI units are to be regarded as the standard. The values given in brackets are for information only.

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 18212;There is no equivalent ISO standard.

ASTM D4661-03 Referenced Document

• ASTM D1193 Standard Specification for Reagent Water
• ASTM D4663 Standard Test Method for Polyurethane Raw Materials Determination of Hydrolyzable Chlorine of Isocyanates
• ASTM D883 Standard Terminology Relating to Plastics

ASTM D4661-03 history

• 2023 ASTM D4661-23 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
• 2018 ASTM D4661-18 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
• 2013 ASTM D4661-13 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
• 2009 ASTM D4661-09 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
• 2003 ASTM D4661-03 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
• 1998 ASTM D4661-98 Standard Test Methods for Polyurethane Raw Materials Determination of Total Chlorine in Isocyanates