BS EN ISO 7579:2009
$102.76
Dyestuffs. Determination of solubility in organic solvents. Gravimetric and photometric methods
| Published By | Publication Date | Number of Pages |
| BSI | 2009 | 20 |
This International Standard specifies two methods for determining the solubility of dyestuffs in organic solvents. They are applicable to dyestuffs that do not change chemically under the influence of the solvent and are stable and non-volatile under the specified drying conditions. For volatile solvents (boiling point < 120 °C), the gravimetric procedure is recommended and, for less volatile solvents (boiling point > 120 °C), the photometric procedure is recommended. The choice of procedure should be made on a case-by-case basis.
The methods are suitable for concentrations between 1 g and 1 000 g of dyestuff per litre of solvent. Higher concentrations can be used provided the viscosity of the solution is such that the procedure can be carried out readily.
The methods are not suitable for the determination of insoluble matter in a dyestuff.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 9 | Scope Normative references Terms and definitions Principle |
| 10 | Solvent Apparatus Sampling |
| 11 | Procedure Preliminary determination Preparation of test solutions Gravimetric determination of the concentration of the dissol General Procedure |
| 12 | Determination of non-volatile-matter content of the dyestuff Expression of results |
| 13 | Precision Photometric determination of the concentration of the dissol General Preparation of calibration solution |
| 14 | Preparation and dilution of test solutions |
| 15 | Procedure Zeroing Calibration Measurements Expression of results |
| 16 | Test report |
