ASTM D5523-21
Standard Test Method for Polyurethane Raw Materials: Acidity by Argentometric Determination of Hydrolyzable Chlorine in Monomeric, Aromatic Isocyanates
- Standard No.
- ASTM D5523-21
- Release Date
- 2021
- Published By
- American Society for Testing and Materials (ASTM)
- Latest
- ASTM D5523-21
- Scope
- 1.1?This test method measures the hydrolyzable chlorine content of monomeric, aromatic isocyanates used as polyurethane raw materials and expresses it as HCl acidity. The test method is applicable to toluene diisocyanate (TDI) and monomeric methylene di(phenylisocyanate), known
ASTM D5523-21 Referenced Document
- ASTM D883 Standard Terminology Relating to Plastics*， 2024-02-01 Update
- ASTM E2935 Standard Practice for Evaluating Equivalence of Two Testing Processes*， 2021-06-01 Update
- ASTM E456 Standard Terminology for Relating to Quality and Statistics
ASTM D5523-21 history
- 2021 ASTM D5523-21 Standard Test Method for Polyurethane Raw Materials: Acidity by Argentometric Determination of Hydrolyzable Chlorine in Monomeric, Aromatic Isocyanates
- 2015 ASTM D5523-15 Standard Test Method for Polyurethane Raw Materials: Acidity by Argentometric Determination of Hydrolyzable Chlorine in Monomeric, Aromatic Isocyanates
- 2010 ASTM D5523-10 Standard Test Method for Polyurethane Raw Materials Acidity by Argentometric Determination of Hydrolyzable Chlorine in Monomeric, Aromatic Isocyanates
- 2004 ASTM D5523-04 Standard Test Method for Polyurethane Raw Materials Acidity by Argentometric Determination of Hydrolyzable Chlorine in Monomeric, Aromatic Isocyanates
- 1994 ASTM D5523-94(1999)e1 Standard Test Method for Polyurethane Raw Materials Acidity by Argentometric Determination of Hydrolyzable Chlorine in Monomeric, Aromatic Isocyanates
