ASTM D4661
Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
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About This Item
ASTM D4661 is the ASTM standard for testing polyurethane raw materials, specifically for determining total chlorine in isocyanates. It provides a focused analytical reference for evaluating a key impurity or quality parameter in these materials. By supporting consistent measurement of total chlorine, this standard helps users compare results, monitor material quality, and make informed decisions in procurement, production, and incoming inspection.
Overview of ASTM D4661
The official title of ASTM D4661, Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates, indicates a laboratory-oriented test method used for chemical characterization of isocyanate raw materials. It is intended to guide the determination of total chlorine as a measurable component of the material. In practice, this kind of ASTM standard is valuable for organizations that need a consistent technical basis for testing, reporting, and quality control of polyurethane feedstocks.
Common use cases of ASTM D4661
ASTM D4661 is commonly used when isocyanate raw materials must be evaluated for total chlorine content as part of routine quality assurance or supplier verification. It may support laboratory testing in manufacturing, receiving inspection, and product development workflows where polyurethane inputs are being assessed. The standard is especially relevant when consistent analytical results are needed to compare batches, confirm material specifications, or document compliance within a controlled testing program.
Benefits of using ASTM D4661
Using ASTM D4661 helps create a repeatable approach to measuring total chlorine in isocyanates, which can improve confidence in material evaluation and reporting. It supports more consistent quality control, clearer procurement decisions, and better alignment between suppliers and buyers. For teams working with polyurethane raw materials, the standard can also reduce ambiguity in test results and provide a recognized technical reference for internal specifications or acceptance criteria.
- Total chlorine determination in isocyanates
- Polyurethane raw material testing reference
- Quality control and batch comparison
- Supplier verification and incoming inspection
- Technical support for material evaluation
- Publication Date: 2023-03-10
- Publisher: ASTM
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