EN ISO 1061:1999
Current
The latest, up-to-date edition.
Plastics - Unplasticized cellulose acetate - Determination of free acidity (ISO 1061:1990)
23-06-1999
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Test sample
7 Procedure
8 Expression of results
9 Precision
10 Test report
Annex ZA (normative) Normative references to international
publications with their relevant European
publications
The free acidity determined by this method includes acidity extractable by water and acidity due to acidic groups directly attached to the cellulose acetate, e.g. carboxyl groups. This method is not suitable for cellulose acetate containing any additives which may affect the test. The principle consists in treating a test portion of cellulose acetate with water and titrating the resultant solution with sodium hydroxide solution. The free acidity is calculated as the percentage, by mass, of free acetic acid in the cellulose acetate. This second edition cancels and replaces the first edition ISO 1061:1975, of which it constitutes a minor technical revision.
| Committee |
CEN/TC 249
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| SN EN ISO 1061 : 1999 | Identical |
| NEN EN ISO 1061 : 1999 | Identical |
| ISO 1061:1990 | Identical |
| I.S. EN ISO 1061:1999 | Identical |
| UNI EN ISO 1061 : 2002 | Identical |
| NS EN ISO 1061 : 1ED 1999 | Identical |
| NF EN ISO 1061 : 1999 | Identical |
| NBN EN ISO 1061 : 1ED 99 | Identical |
| PN EN ISO 1061 : 2002 | Identical |
| BS EN ISO 1061:1999 | Identical |
| UNE-EN ISO 1061:2000 | Identical |
| DIN EN ISO 1061:2000-02 | Identical |
| ISO 565:1990 | Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings |
| EN ISO 585:1999 | Plastics - Unplasticized cellulose acetate - Determination of moisture content (ISO 585:1990) |
| ISO 585:1990 | Plastics Unplasticized cellulose acetate Determination of moisture content |
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