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GB/T 2401-2025 English PDF

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US$219.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 2401-2025: Cationic dyes - Determination of fiber saturation value, dye saturation value and saturation factor in acrylic dyeing
Status: Valid

GB/T 2401: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 2401-2025	219	Add to Cart	3 days	Cationic dyes - Determination of fiber saturation value, dye saturation value and saturation factor in acrylic dyeing	Valid
GB/T 2401-2006	189	Add to Cart	3 days	Cationic dyes -- Determination of fiber saturation value, dye saturation value and saturation factor in acrylic dyeing	Valid
GB/T 2401-1980	199	Add to Cart	2 days	Determination of saturation value of fibre, saturation value of dyestuff and saturation factor in dyeing acrylic fibres with cationic dyes	Obsolete

Basic data

Standard ID: GB/T 2401-2025 (GB/T2401-2025)
Description (Translated English): Cationic dyes - Determination of fiber saturation value, dye saturation value and saturation factor in acrylic dyeing
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G55
Classification of International Standard: 71.100.01; 87.060.10
Word Count Estimation: 10,193
Date of Issue: 2025-08-29
Date of Implementation: 2026-03-01
Older Standard (superseded by this standard): GB/T 2401-2006
Issuing agency(ies): State Administration for Market Regulation, National Standardization Administration

GB/T 2401-2025: Cationic dyes - Determination of fiber saturation value, dye saturation value and saturation factor in acrylic dyeing

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT2401-2025
ICS 71.100.01;87.060.10 CCSG55 National Standard of the People's Republic of China Replaces GB/T 2401-2006 Fiber saturation value when dyeing acrylic with cationic dyes, Determination of dye saturation value and saturation factor Released on August 29, 2025 Implementation on March 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Preface

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB/T 2401-2006 "Determination of fiber saturation value, dye saturation value and saturation factor when dyeing acrylic fibers with cationic dyes" Compared with GB/T 2401-2006, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) The terms and definitions have been changed (see Chapter 3, Chapter 3 of the.2006 edition); b) Changed the requirements for reagents and materials (Chapter 5, Chapter 5 of the.2006 edition); c) The general conditions for dyeing have been changed (see 7.1.1, 7.1.1 of the.2006 edition); d) The dye solution formula has been changed (see 7.1.2.1, 7.1.2.1 of the.2006 edition); e) The dyeing operation has been changed (see 7.1.2.2, 7.1.2.2 of the.2006 edition); f) The calculation formula for dye uptake percentage has been changed (see 7.1.3, 7.1.3 of the.2006 edition); g) Added the calculation formula of dye saturation value (see 7.1.4.1); changed the calculation formula of fiber saturation value (see 7.1.4.2,.2006 edition); 7.1.4); h) The determination of dye saturation value and saturation factor has been changed (see 7.2, 7.2 of the.2006 edition). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Technical Committee on Standardization of Dyes (SAC/TC134). This document was drafted by. Zhejiang Runtu Co., Ltd., Shenyang Chemical Testing Technology (Nantong) Co., Ltd., Shenyang Shenyang Chemical Research Institute Testing Technology Co., Ltd. Co., Ltd., Shenyang Chemical Research Institute Co., Ltd., and Chuanhua Zhilian Co., Ltd. The main drafters of this document are. Zhang Wengang, Yang Zhenmei, Zhao Ting, Chen Sujuan, Li Jingyi, Wang Yong, and Gu Guohao. This document was first published in 1980, revised for the first time in.2006, and this is the second revision. Fiber saturation value when dyeing acrylic with cationic dyes, Determination of dye saturation value and saturation factor

1 Scope

This document describes the determination of fiber saturation value, dye saturation value and saturation factor for acrylic fibers dyed with cationic dyes. This document is applicable to the determination of fiber saturation value, dye saturation value and saturation factor when dyeing acrylic fibers with cationic dyes.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 2374-2017 General conditions for determination of dye staining GB/T 2399-2014 Determination of color shade and intensity of cationic dyes GB/T 6687 Terminology of dyes GB/T 8170-2008 Rules for rounding off values and expression and determination of limit values

3 Terms and Definitions

The terms and definitions defined in GB/T 6687 apply to this document.

4 Principles

A refined product of cationic fluorescent yellow 4GL (CI basic yellow 24) with a known saturation factor was used to measure the The acrylic fiber with known fiber saturation value (SF) is dyed, and the saturation limit is when the fiber absorbs 95% of the dye. The fiber saturation value (SF) of the fiber is used to dye the dye, and the fiber's exhaustion rate of the dye reaches 95% is the saturation limit, and the saturation value (SD) and saturation factor f of the dye are calculated.

5 Reagents and Materials

Reagents and materials that comply with Chapter 3 of GB/T 2374-2017 should be used. a) acrylic yarn; b) glacial acetic acid; c) anhydrous sodium acetate; d) Refined cationic fluorescent yellow 4GL (CI Basic Yellow 24), with a known saturation factor f of 0.85.

6 Instruments and Equipment

The equipment used should meet the following requirements. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 2401-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 2401-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 2401-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 2401-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 2401-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 2401-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.