BS EN ISO 3451-5:2002
$102.76
Plastics. Determination of ash – Poly(vinyl chloride)
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 16 |
This part of ISO 3451 specifies three methods for the determination of the ash of poly(vinyl chloride). The general procedures given in ISO 3451-1 are followed. For ash, method A is used. For sulfated ash, methods B and C are used. All three methods are applicable to resins, compounds and finished products. Methods B and C are applicable when lead-containing compounds are present.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | TitlePage – Plastics�— Determination of ash�— |
| 7 | Foreword – Foreword |
| 9 | Scope – 1��� Scope NormativeReference – 2��� Normative reference Clause1 – 3��� Principle Subclause2 – 3.1��� Method�A (direct calcination) Subclause2 – 3.2��� Method�B (calcination, with sulfuric acid treatment after combustion) Subclause2 – 3.3��� Method�C (calcination, with sulfuric acid treatment before combustion) |
| 10 | Clause1 – 4��� Reagents (for methods B and C only) UntitledSubclause2 – 4.1��� Sulfuric acid UntitledSubclause2 – 4.2��� Acetic acid Clause1 – 5��� Apparatus UntitledSubclause2 – 5.1��� Crucible of silica UntitledSubclause2 – 5.2��� Bunsen burner UntitledSubclause2 – 5.3��� Muffle furnace UntitledSubclause2 – 5.4��� Pipettes UntitledSubclause2 – 5.5��� Desiccator UntitledSubclause2 – 5.6��� Analytical balance UntitledSubclause2 – 5.7��� Weighing bottles Clause1 – 6��� Safety precautions UntitledSubclause2 – 6.1��� Always wear safety glasses when working in the laboratory. UntitledSubclause2 – 6.2��� Exercise all normal safety precautions when working with an open flam… UntitledSubclause2 – 6.3��� Carry out the heating of the sample in a fume cupboard, and for calci… UntitledSubclause2 – 6.4��� Read carefully and follow strictly the instructions in the warnings a… Clause1 – 7��� Procedure Subclause2 – 7.1��� Test portion |
| 11 | Subclause2 – 7.2��� Method�A (determination of unsulfated ash) UntitledSubclause3 – 7.2.1��� Heat the clean crucible and lid ( UntitledSubclause3 – 7.2.2��� Introduce into the crucible a suitable quantity of sample (see UntitledSubclause3 – 7.2.3��� Heat the crucible directly on the heating device ( UntitledSubclause3 – 7.2.4��� Partially close the crucible with the lid so that the volatile matt… UntitledSubclause3 – 7.2.5��� Remove the crucible with lid from the furnace, place it in the desi… UntitledSubclause3 – 7.2.6��� Calcinate again, under the same conditions, until constant mass is … Subclause2 – 7.3��� Method�B (determination of sulfated ash) UntitledSubclause3 – 7.3.1��� Proceed as detailed in UntitledSubclause3 – 7.3.2��� Proceed as detailed in UntitledSubclause3 – 7.3.3��� Proceed as detailed in UntitledSubclause3 – 7.3.4��� After allowing the crucible and contents to cool, add concentrated … UntitledSubclause3 – 7.3.5��� If, after allowing the crucible to cool, carbon is still evident, a… UntitledSubclause3 – 7.3.6��� Place the crucible at the entrance of the muffle furnace ( |
| 12 | Subclause2 – 7.4��� Method�C (determination of sulfated ash) UntitledSubclause3 – 7.4.1��� Proceed as detailed in UntitledSubclause3 – 7.4.2��� Proceed as detailed in UntitledSubclause3 – 7.4.3��� Using a pipette, add drop by drop the minimum possible quantity of … UntitledSubclause3 – 7.4.4��� Proceed as detailed in UntitledSubclause3 – 7.4.5��� Proceed as detailed in UntitledSubclause3 – 7.4.6��� Proceed as detailed in Clause1 – 8��� Number of determinations Clause1 – 9��� Expression of results Clause1 – 10��� Accuracy and precision |
| 13 | Clause1 – 11��� Test report |
