ASTM D4661-98
Standard Test Methods for Polyurethane Raw Materials Determination of Total Chlorine in Isocyanates

Standard No.
ASTM D4661-98
Release Date
1998
Published By
American Society for Testing and Materials (ASTM)
Status
Replace By
ASTM D4661-03
Latest
ASTM D4661-23
Scope

1.1 These test methods determine the total chlorine content of the mixed isomers of toluene diisocyanate (TDI). The difference between the total chlorine content and the hydrolyzable chlorine content (see Test Method D4663) 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 parentheses are for information only.

1.3 This standard does not purport to address all of the safety problems, 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. For specific hazards statements, see Notes 2, 4, 5, 6, 10, and Section 12.1.

Note 1-There is no equivalent ISO standard.

ASTM D4661-98 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



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