Partners save 15% on every standard

Valid

GB/T 33788-2017Reactive dyes -- Determination of shade and relative strength -- Low salt dyeing method (English PDF)

Also coversGBT33788-2017

Open the GB/T 33788-2017 preview as PDF

Preview — first pages of GB/T 33788-2017

This is a limited preview

Buy now to download the full PDF

Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Level / Type

National · Recommended

Issue date

May 31, 2017

Implementation date

December 1, 2017

Scope

GB/T 33788-2017 (Reactive dyes -- Determination of shade and relative strength -- Low salt dyeing method) is available as an English-translated PDF.

GB/T 33788-2017 — This standard specifies the method for the determination of hue and intensity of reactive dyes. This standard is applicable to the determination of hue and intensity of low-salt dyeing dyes.

Document preview — GB/T 33788-2017

National Standard of the People's Republic of China

ICS: 71.100.01; 87.060.10
Classification: G 55

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Foreword
1 Scope
2 normative reference documents
3 reagents and materials
4 instruments and equipment
5 test method
5.1 General conditions
5.2 dye bath preparation

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009.

This standard is proposed by the China Petroleum and Chemical Industry Association.

This standard is under the jurisdiction of the National Dye Standardization Technical Committee (SAC/TC134).

The drafting of this standard. Zhejiang Ruihua Chemical Co., Ltd., Shenzhen Pan-sheng plastic additives Co., Ltd., Shenyang Chemical Industry Research Institute Co., Ltd.,

National Dye Quality Supervision and Inspection Center.

1 Scope

This standard specifies the method for the determination of hue and intensity of reactive dyes.

This standard is applicable to the determination of hue and intensity of low-salt dyeing dyes.

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.

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

GB/T 2387-2013 Determination of color and intensity of reactive dyes

Determination of Relative Strength and Color Difference of Dyes by Instrument Method GB/T 6688-2008

3 reagents and materials

Reagents and materials should comply with the relevant provisions of Chapter 3 of GB/T 2374-2017.

4 instruments and equipment

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

5 test method

5.1 General conditions

The general conditions for dyeing shall comply with the relevant provisions of GB/T 2374-2017. The depth of dyeing is selected according to the specific variety, in order to meet the sub-file clear

The principle of clarity.

The general conditions for dyeing are as follows.

--- dyeing fiber. 5g or 10g cotton knitted fabric or cotton yarn;

--- dyeing depth. 1% (owf) ~ 4% (owf);

--- dyeing bath ratio. 1.20 (under the premise of uniform dyeing, but also choose a smaller bath ratio);

--- anhydrous sodium sulfate. 30g/L ~ 35g/L;

Reaction dye dyeing agent. 5g/L ~ 8g/L, or anhydrous sodium carbonate. 15g/L ~ 20g/L;

--- dyeing temperature. room temperature (20 degrees C) ~ 80 degrees C;

--- Dyeing time. 90min.

5.2 dye bath preparation

To the dyeing depth of 2% (owf), 5g cotton knitted fabric or cotton yarn dyeing, using 1.20 bath ratio, for example, in 5 cups, according to Table 1 regulation

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

How to Buy GB/T 33788-2017

1Add to cart. Click the "Buy GB/T 33788-2017" button on this page. You can add more standards before checkout.
2Checkout. Enter your email and billing details. Payment is processed securely by Stripe (cards, Apple Pay, Google Pay supported).
3Instant delivery (0–9 sec). Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4Invoice included. A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.