GB/T 25248-2026Determination of infrared cyanine dye in 830 nm digital printing plate materials - High performance liquid chromatography (English PDF)

1 Scope

This document describes a method for determining the content of infrared-absorbing cyanine dyes in 830nm digital printing materials using high-performance liquid chromatography.

This document applies to the quality control of infrared-absorbing benzoindole cyanine dyes used in 830nm digital plate-making materials. Measured impurities...

The limit of detection is 0.01%.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 6679 General Rules for Sampling of Solid Chemical Products

GB/T 6682 Specifications and test methods for water used in analytical laboratories

GB/T 8170 Rules for rounding off numerical values and the representation and determination of limiting values

3 Terms and Definitions

This document does not contain any terms or definitions that need to be defined.

4 Basic Characteristics

The chemical name of the infrared-absorbing cyanine dye product for 830nm digital plate making materials is 2-[2-[2-chloro-3-[2-(1,3-dihydro-1,1,3-trichloro-3-...

[Methyl-2-hydro-benzoindole-2-ylidene]-ethylidene]-1-cyclohexen-1-yl]-vinyl]-1,1,3-trimethyl-1-hydro-benzoindole-4-

Methylbenzenesulfonate, CAS number. 134127-48-3, structural formula.

Molecular formula. C47H47ClN2O3S

Relative molecular mass. 755.41 (based on 2021 international relative atomic mass) […]