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 ℃), the gravimetric procedure is recommended and, for less volatile solvents (boiling point > 120 ℃), the photometric procedure is recommended. The choice of procedure should be made on a case-by-case basis.
EN ISO 7579:2009 Referenced Document
ISO 15528 Paints, varnishes and raw materials for paints and varnishes — Sampling
ISO 2811-1 Paints and varnishes — Determination of density — Part 1: Pycnometer method
ISO 787-2 General methods of test for pigments and extenders — Part 2: Determination of matter volatile at 105 °C
EN ISO 7579:2009 history
2009EN ISO 7579:2009 Dyestuffs - Determination of solubility in organic solvents - Gravimetric and photometric methods (ISO 7579:2009)
1996EN ISO 7579:1996 Dyestuffs - Determination of Solubility in Organic Solvents - Gravimetric Method ISO 7579: 1990