NEN EN ISO 182-2 : 1999

Committees responsible
National foreword
1 Scope
2 Normative references
3 Definition
4 Principle
5 Reagents and materials
6 Apparatus
7 Preparation of test samples
8 Number of tests
9 Temperatures for dehydrochlorination
10 Test procedure
11 Expression of results
12 Precision
13 Test report
Annex A (informative) Cleaning the apparatus
Annex ZA (normative) Normative references to
         international publications with their
         relevant European publications
Figures
      1 - General arrangement of apparatus
      2 - Cell A (re-usable) for dehydrochlorination
          of PVC samples
      3 - Cell B (disposable) for dehydrochlorination
          of PVC samples
      4 - Tubes for connecting dehydrochlorination
          cell to measurement cell
      5 - Expansion joint for connection on each
          side of cell B
      6 - Example of a suitable measurement cell
Tables
      1 - Repeated determinations of stability time
      2 - Repeated determinations of stability time
          for a single product over a 2 year period
      3 - Repeated determinations of stability time
          in several laboratories using a single
          product

Defines a procedure for determining the thermal stability at high temperatures of compounds and products based on vinyl chloride homopolymers and copolymers undergoing dehydrochlorination.