NF EN ISO 7579

NF EN ISO 7579

December 2009
Standard Current

Dyestuffs - Determination of solubility in organic solvents - Gravimetric and photometric method

ISO 7579:2009 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.

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Main informations

Collections

National standards and national normative documents

Publication date

December 2009

Number of pages

19 p.

Reference

NF EN ISO 7579

ICS Codes

87.060.10   Pigments and extenders

Classification index

T30-009

Print number

1 - 08/12/2009

International kinship

ISO 7579:2009

European kinship

EN ISO 7579:2009
Sumary
Dyestuffs - Determination of solubility in organic solvents - Gravimetric and photometric method

ISO 7579:2009 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.

Replaced standards (1)
NF EN ISO 7579
November 1996
Standard Cancelled
Dyestuffs. Determination of solubility in organic solvents. Gravimetric method.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Principe
    2
  • 5 Solvant
    2
  • 6 Appareillage
    2
  • 7 Échantillonnage
    3
  • 8 Mode opératoire
    3
  • 9 Rapport d'essai
    8
  • Annexe A (normative) Calculs de solubilité
    9
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