GB/T 5541-2017Disperse dyes - Determination of stability of dispersion at high temperature - Filter test of double filter papers (English PDF)

1 Scope

This standard specifies a method for determining the high temperature dispersion stability of disperse dyes by double filter paper filtration.

This standard is applicable to the determination of dispersion stability of disperse dyes at high temperature.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article

Pieces. For undated references, the latest edition (including all modifications) applies to this document.

Chemical analysis of filter paper GB/T 1914-2007

GB/T 2374-2017 General conditions for dye dyeing determination

Analysis of laboratory water specifications and test methods GB/T 6682-2008

3 principle

A certain amount of disperse dyes for pre-dispersed, high-temperature heat treatment, the provisions of the specifications of the double filter paper filter. By filtering the time and dyes over

Determination of High Temperature Dispersion Stability of Dye by Filtration Residue.

4 reagents and materials

Unless otherwise specified, use only reagents identified as analytical reagents and shall comply with the relevant provisions of Chapter 3 of GB/T 2374-2017;

Water for the three water specified in GB/T 6682-2008.

5 instruments and equipment

The equipment and equipment shall comply with the relevant provisions of Chapter 4 of GB/T 2374-2017.