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ASTM D4661-23
Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
NORMA vydaná dňa 1.3.2023
Informácie o norme:
Označenie normy: ASTM D4661-23
Dátum vydania normy: 1.3.2023
Kód tovaru: NS-1135565
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D4661-23 :
Keywords:
aromatic isocyanates, chlorine, isocyanates, oxygen ignition vessel, polyurethane raw materials, Sch?niger ignition, titration,, ICS Number Code 83.080.10 (Thermosetting materials)
Doplňujúce informácie
| Significance and Use | ||||||
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5.1?These test methods are suitable for use 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. |
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| 1. Scope | ||||||
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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 D4663) is a measure of the amount of chlorobenzene, 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 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:?This standard is identical to ISO 26603.
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. |
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| 2. Referenced Documents | ||||||
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