ASTM D2572 PDF
ASTM D(). Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers. standard by ASTM International. Find the most up-to-date version of ASTM D at Engineering ASTM D – 97(). Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers. This standard is a part of ASTM Book of Standards.
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The test method is applicable to products derived from toluene diisocyanate and methylene-bis- 4-phenylisocyanate. Chemistry is the Science Behind Sustainability — the products, technologies and innovations enabled by the chemical industry are essential to a sustainable future. Search book title Enter keywords for book title search.
ASTM D2572 – 97(2010)
Enter your personal account email address to request a password reset: Test Method A also applies to more viscous samples that are soluble in -butyl acetate. Standard Practice for Polyurethane Raw Materials: It is applicable only to materials whose color-producing bodies have light-absorption characteristics similar to those of the standards used.
These test methods also are applicable to many other liquids. Both procedures are applicable to a variety of organic compounds but the amount of sample used may have to be varied. The values given in parentheses are for information only. There were no books found for the applied search filters. Please sign into an account with a subscription to this content, or email for help at support madcad. A blog of the American Chemistry Council: Adtm is suitable for diols made from the commonly used initators and containing EO percentages greater than or equal to six.
The main sources of hydrolyzable chlorine in the isocyanates are carbamoyl chloride and dissolved phosgene.
ASTM D Standard Test Method for Isocyanate Groups in Urethane – Google Books
Polyurethane Raw Materials Test Methods. The electronic file may not be reproduced in any way. If you like to setup a d252 demo, let us know at support madcad. An alternative method is Test Method D Two test methods are required to give accurate results over a broad range of isomer concentrations.
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This test method d22572 also be applied to other isocyanates of suitable solubility, such as crude or refined polymeric isocyanates. Fluorine Nuclear Magnetic Resonance Spectroscopy fluorine NMRmeasures the primary hydroxyl content in ethylene oxide-propylene oxide polyethers used in flexible urethane foams. Carbon Nuclear Magnetic Resonance Spectroscopy carbon NMRmeasures the primary hydroxyl content of ethylene-oxide-propylene oxide polyethers used in preparing flexible foams.
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Print 1 2 f2572 4 5 page sstarting from page current page. Procedures for selecting calibration materials and for collecting and asstm data to develop NIR calibrations are outlined. Please login to your authorized staff account to use this feature. The properties included in this specification are those required to characterize toluene diisocyanate. ASTM grants you a license as follows: This test method may also be useful for the determination of free isocyanate monomers of other types upon taking precautions to confirm suitability.
Two methods based on infrared spectroscopy are required to asstm accurate results over a broad range of isomer concentrations. The business of chemistry providesskilled, good-paying American jobs. Other requirements may become necessary and will be added as the necessary test methods become available. Remember me for one month.
They also apply to many other hydroxyl-containing substances. This test method is not applicable to amine-based polyols.