GB/T 2401-2025 Cationic dyes—Determination of fiber saturation value,dye saturation value and saturation factor in acrylic dyeing English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered.
ICS 71.100.01;87.060.10 CCS G55
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 2401-2025 (Replaces GB/T 2401-2006)
CATIONIC DYES—DETERMINATION OF FIBER SATURATION VALUE, DYE SATURATION VALUE, AND SATURATION FACTOR IN ACRYLIC DYING
Issued on August 29, 2025
Implemented on March 1, 2026
Issued by State Administration for Market Regulation
Standardization Administration of China
Contents
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Reagents and Materials
1 Scope
This document specifies the determination methods for fiber saturation value (SF), dye saturation value (SD), and saturation factor (f) of cationic dyes in acrylic fiber dyeing.
This document applies to the determination of SF, SD, and f for cationic dyes in acrylic fiber dyeing.
2 Normative References
The following documents contain provisions that, through reference in this text, constitute essential clauses of this document. For dated references, only the edition cited applies; for undated references, the latest version (including amendments) applies.
GB/T 2374-2017 Dyes—General conditions for dyeing tests
GB/T 2399-2014 Cationic dyes—Determination of shade and strength of dyed materials
GB/T 6687 Nomenclature of dyes
GB/T 8170-2008 Rules for rounding off numbers and representation of limiting values
3 Terms and Definitions
Terms and definitions defined in GB/T 6687 apply to this document.
4 Principle
A precisely prepared cationic fluorescent yellow 4GL (C.I. Basic Yellow 24) with a known saturation factor (f) is used to dye acrylic fibers of unknown fiber saturation value (SF) at varying concentrations. The saturation limit is defined as the point where the fiber's dye exhaustion rate reaches 95%, and SF is calculated using the formula.
For dye determination, fibers with a known SF value are dyed with the target dye. The saturation limit (95% exhaustion) is used to calculate the dye's saturation value (SD) and saturation factor (f).
Standard
GB/T 2401-2025 Cationic dyes—Determination of fiber saturation value,dye saturation value and saturation factor in acrylic dyeing (English Version)
Standard No.
GB/T 2401-2025
Status
to be valid
Language
English
File Format
PDF
Word Count
7000 words
Price(USD)
210.0
Implemented on
2026-3-1
Delivery
via email in 1~3 business day
Detail of GB/T 2401-2025
Standard No.
GB/T 2401-2025
English Name
Cationic dyes—Determination of fiber saturation value,dye saturation value and saturation factor in acrylic dyeing
GB/T 2401-2025 Cationic dyes—Determination of fiber saturation value,dye saturation value and saturation factor in acrylic dyeing English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered.
ICS 71.100.01;87.060.10 CCS G55
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 2401-2025 (Replaces GB/T 2401-2006)
CATIONIC DYES—DETERMINATION OF FIBER SATURATION VALUE, DYE SATURATION VALUE, AND SATURATION FACTOR IN ACRYLIC DYING
Issued on August 29, 2025
Implemented on March 1, 2026
Issued by State Administration for Market Regulation
Standardization Administration of China
Contents
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Reagents and Materials
1 Scope
This document specifies the determination methods for fiber saturation value (SF), dye saturation value (SD), and saturation factor (f) of cationic dyes in acrylic fiber dyeing.
This document applies to the determination of SF, SD, and f for cationic dyes in acrylic fiber dyeing.
2 Normative References
The following documents contain provisions that, through reference in this text, constitute essential clauses of this document. For dated references, only the edition cited applies; for undated references, the latest version (including amendments) applies.
GB/T 2374-2017 Dyes—General conditions for dyeing tests
GB/T 2399-2014 Cationic dyes—Determination of shade and strength of dyed materials
GB/T 6687 Nomenclature of dyes
GB/T 8170-2008 Rules for rounding off numbers and representation of limiting values
3 Terms and Definitions
Terms and definitions defined in GB/T 6687 apply to this document.
4 Principle
A precisely prepared cationic fluorescent yellow 4GL (C.I. Basic Yellow 24) with a known saturation factor (f) is used to dye acrylic fibers of unknown fiber saturation value (SF) at varying concentrations. The saturation limit is defined as the point where the fiber's dye exhaustion rate reaches 95%, and SF is calculated using the formula.
For dye determination, fibers with a known SF value are dyed with the target dye. The saturation limit (95% exhaustion) is used to calculate the dye's saturation value (SD) and saturation factor (f).
