ASTM D 5629 : 2016 : REDLINE
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Polyurethane Raw Materials: Determination of Acidity in Low-Acidity Aromatic Isocyanates and Polyurethane Prepolymers
20-03-2023
English
08-04-2016
Important note : Users cannot be edited or removed once added to your Multi user PDF.CONTAINED IN VOL. 08.03, 2016 Covers the acidity, expressed as ppm of hydrochloric acid (HCI), in aromatic isocyanate or polyurethane prepolymer samples of below 100 ppm acidity.
| Committee |
D 20
|
| DevelopmentNote |
Supersedes ASTM D 4667 (12/2001) Supersedes ASTM D 4876. (05/2004)
|
| DocumentType |
Redline
|
| Pages |
3
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy |
1.1This test method measures the acidity, expressed as ppm of hydrochloric acid (HCl), in aromatic isocyanate or polyurethane prepolymer samples of below 100 ppm acidity. The test method is applicable to products derived from toluene diisocyanate and methylene di(phenylisocyanate) (see Note 1). Refer to Test Method D6099 for determination of acidity in moderate- to high-acidity aromatic isocyanates.
1.2The values stated in SI units are to be regarded as the standard.
1.3This 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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 1:This standard is equivalent to ISO 14898, Method B.
| BS ISO 14898 : 1999 | PLASTICS - AROMATIC ISOCYANATES FOR USE IN THE PRODUCTION OF POLYURETHANE - DETERMINATION OF ACIDITY |
| ASTM D 1786 : 2016 : REDLINE | Standard Specification for Toluene Diisocyanate |
| ISO 14898:1999 | Plastics Aromatic isocyanates for use in the production of polyurethane Determination of acidity |
| ASTM E 180 : 2003 | Standard Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals (Withdrawn 2009) |
| ISO 14898:1999 | Plastics Aromatic isocyanates for use in the production of polyurethane Determination of acidity |
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