درباره ما
Standard Test Methods for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates
ASTM D5155-25
| contributor author | ASTM - ASTM International | |
| date accessioned | 2025-09-30T19:26:13Z | |
| date available | 2025-09-30T19:26:13Z | |
| date copyright | 2025 | |
| date issued | 2025 | |
| identifier other | d5155-25.pdf | |
| identifier uri | http://yse.yabesh.ir/std;query=authoCA58ear3081D206861598F1EFDEC014A/handle/yse/343538 | |
| description abstract | 5.1 These test methods are used for research and for quality control to characterize isocyanates used in polyurethane products. | |
| language | English | |
| title | Standard Test Methods for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates | en |
| title | ASTM D5155-25 | num |
| type | standard | |
| status | Active | |
| tree | ASTM - ASTM International:;2025 | |
| contenttype | fulltext | |
| scope | 1.1 These test methods are used to measure the isocyanate content of aromatic isocyanates used as polyurethane raw materials. 1.1.1 Test Method A—Unheated toluene-dibutylamine determines the toluene diisocyanate content, the amine equivalent and the isocyanate content of refined toluene-2,4-diisocyanate and toluene-2,6-diisocyanate, or mixtures of the two. Other isomers, if present, will be included in the determination. This test method is also applicable to other isocyanates of suitable reactivity and solubility. 1.1.2 Test Method B—Heated toluene-dibutylamine determines the amine equivalent and the isocyanate content of crude or modified isocyanates derived from toluene diisocyanate, methylene di-(4-phenylisocyanate) and polymeric (methylene phenylisocyanate). 1.1.3 Test Method C—Unheated trichlorobenzene-toluene-dibutylamine determines the amine equivalent and the isocyanate content of crude or modified isocyanates derived from toluene diisocyanate, methylene-di-(4-phenylisocyanate) and polymeric (methylene phenylisocyanate). 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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: Method A of this test method is equivalent to Method A of ISO 14896. Method C of this test method is identical to Method B of ISO 14896. 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. | |
| identifier DOI | 10.1520/D5155-25 |
