BS EN ISO 8985:2022 – TC
$186.33
Tracked Changes. Plastics. Ethylene/vinyl acetate copolymer (EVAC) thermoplastics. Determination of vinyl acetate content
| Published By | Publication Date | Number of Pages |
| BSI | 2022 | 74 |
This document specifies two categories of method for the determination of the vinyl acetate (VAC) content of ethylene/vinyl acetate (EVAC) copolymer, for use in the designation of such copolymers according to ISO 21301-1. One category is referred to as “reference methods”, the other as “test methods”. The “reference methods” are used to calibrate the method used for the determination of the vinyl acetate content of ethylene/vinyl acetate copolymers. The “test methods” are other methods which can be used for the determination if they are calibrated using one of the reference methods described in Clause 4, provided they show a certain permissible repeatability.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | 30453482 |
| 43 | A-30409957 |
| 44 | National foreword |
| 46 | European foreword |
| 49 | Foreword |
| 51 | 1 Scope 2 Normative references 3 Terms and definitions 4 Reference methods 4.1 Reference method 1: Hydrolysis and back titration 4.1.1 Principle |
| 52 | 4.1.2 Reagents 4.1.3 Apparatus 4.1.4 Procedure |
| 53 | 4.1.5 Expression of results 4.1.6 Test report |
| 54 | 4.2 Reference method 2: Saponification and potentiometric titration 4.2.1 Principle 4.2.2 Reagents 4.2.3 Apparatus |
| 55 | 4.2.4 Procedure 4.2.5 Expression of results |
| 56 | 4.2.6 Test report 4.3 Reference method 3: Measurement of oxygen 4.3.1 Principle 4.3.2 Apparatus |
| 57 | 4.3.3 procedure |
| 60 | 4.3.4 Sampling 4.3.5 Calibration |
| 61 | 4.3.6 Calculation of vinyl acetate content 4.3.7 Test report 5 Examples of test methods 5.1 Method using infrared spectrometry 5.1.1 Principle 5.1.2 Apparatus and materials |
| 62 | 5.1.3 Procedure |
| 64 | 5.1.4 Expression of results |
| 65 | 5.1.5 Test report 5.2 Acidimetric method 5.2.1 Principle 5.2.2 Reagents and materials 5.2.3 Apparatus |
| 66 | 5.2.4 Procedure |
| 67 | 5.2.5 Expression of results 5.2.6 Test report |
| 68 | 5.3 Iodometric method 5.3.1 Principle 5.3.2 Reagents 5.3.3 Apparatus 5.3.4 Procedure |
| 69 | 5.3.5 Expression of results 5.3.6 Test report 5.4 Thermogravimetry method 5.4.1 Principle 5.4.2 Apparatus |
| 70 | 5.4.3 Test specimens 5.4.4 Calibration 5.4.5 Procedure |
| 71 | 5.4.6 Test report |
| 72 | Bibliography |
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