BS ISO 17710:2002
$102.76
Plastics. Polyols for use in the production of polyurethane. Determination of degree of unsaturation by microtitration
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 16 |
This International Standard specifies a microtitration method to measure the degree of unsaturation in polyether polyols used in the production of polyurethanes. It is based on the reaction of mercuric acetate with double bonds in the polyol. It does not apply to compounds in which the unsaturation is conjugated with carbonyl, carboxyl or nitrile groups. The product being measured must be essentially dry and free of inorganic salts, especially halides.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | TitlePage – Plastics�— Polyols for use in the production of polyurethane�— Determination of degre… |
| 5 | TableofContent – Contents Page |
| 6 | Foreword – Foreword |
| 7 | Introduction – Introduction |
| 9 | Scope – 1��� Scope NormativeReference – 2��� Normative references |
| 10 | Clause1 – 4��� Principle Clause1 – 5��� Application Clause1 – 6��� Interferences Clause1 – 7��� Reagents UntitledSubclause2 – 7.1��� Methanolic mercuric acetate solution UntitledSubclause2 – 7.2��� Methanolic potassium hydroxide solution UntitledSubclause2 – 7.3��� Methanolic hydrochloric acid solution |
| 11 | UntitledSubclause2 – 7.4��� Sodium bromide UntitledSubclause2 – 7.5��� Methanol Clause1 – 8��� Apparatus UntitledSubclause2 – 8.1��� Autotitrator UntitledSubclause2 – 8.2��� Analytical balance UntitledSubclause2 – 8.3��� Pipette UntitledSubclause2 – 8.4��� Titration vessel Clause1 – 9��� Sampling Clause1 – 10��� Procedure UntitledSubclause2 – 10.1��� This method requires at least a two-fold molar excess of mercury rea… UntitledSubclause2 – 10.2��� Add UntitledSubclause2 – 10.3��� Titrate using UntitledSubclause2 – 10.4��� Titrate a blank using the same procedure, but without adding a test … UntitledSubclause2 – 10.5��� To determine the acidity or basicity of the polyol in order to corre… |
| 12 | Clause1 – 11��� Expression of results UntitledSubclause2 – 11.1��� Calculate the acidity of the sample as follows: UntitledSubclause2 – 11.2��� Calculate the basicity of the sample as follows: UntitledSubclause2 – 11.3��� Calculate the degree of unsaturation of the sample, in Clause1 – 12��� Precision and bias Subclause2 – 12.1��� Precision |
| 13 | Subclause2 – 12.2��� Bias Clause1 – 13��� Test report |
| 14 | Bibliography – Bibliography |
