ASTM-D4661:1998 Edition

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

Published By	Publication Date	Number of Pages
ASTM	1998	11

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Categories: 83.080.10 - Thermosetting materials, ASTM

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Description

ASTM D4661-98

Historical Standard: Standard Test Methods for Polyurethane Raw Materials Determination of Total Chlorine in Isocyanates

ASTM D4661

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.

Keywords

aromatic isocyanates; chlorine; isocyanates; oxygen; polyurethane raw materials; Schoniger; titration; toluene diisocyanate

ICS Code

ICS Number Code 83.080.10 (Thermosetting materials)

DOI: 10.1520/D4661-98

Additional information

Standard Title	D4661-98 Standard Test Methods for Polyurethane Raw Materials Determination of Total Chlorine in Isocyanates
Published Code	ASTM
Publication Date	1998
Pages Count	11
ICS Codes	83.080.10 - Thermosetting materials