What are the Tips for Printing and Dyeing │ What is the Index of Color Index (CI) and what is it for? Why does each dye have a code name?

1. What is the dye index (CI)

"Dye Index" is abbreviated as CI and is an important reference book for dyes (pigments) professional search.

The first edition was edited by FM Luo, a professor at the University of Leeds, England, and published by the British Dyers Association in 1924.

In 1928, the "supplement" was issued. The British Dyers Association was co-edited with the American Association of Textile Chemists and Colourists from 1956 to 1958, and the second edition was published in four volumes.

In 1963, the second edition of the "Supplement" (1 volume) was released, adding the content of reactive dyes.

In 1971, the two associations issued a third edition, a total of five volumes.

In 1982, the book was revised for the second time in a total of seven volumes. In addition, an unedited "Pigment and Solvent Dye" volume was issued.

Since 1999, this version of the CD-ROM has been published. The third edition of the dye index has five originals and two updated editions. A total of nearly 8,000 dyes have been collected. For each dye, its application classification, color tone, application performance, various grades of fastness, and textiles are listed in detail. And other uses, chemical structural formulas, preparation routes, inventors, relevant data sources, and different trade names.

The book details the color, application method, application, main performance data, fastness testing method, known chemical structure, preparation method, dye product name, manufacturer's name, reference, patent, and index of the dye.

The book uses uniform numbers for the naming of dyes. Each dye typically has two numbers, one for the generic and the second for the chemical structure.

For example, the restored blue RSN is coded as CI Restore Blue 4 and the structure code CI69800. The chemical structure can be found by the code number, and the corresponding product name can be as many as 30, which are all specified in the book. With the evolution of dye varieties, the "Dye Index" has been supplemented and revised. The book has important guiding significance in dye classification information.

The Dye Index Volumes 1-3 are the application classification of dyes; the fourth volume is the chemical structure classification of the dyes. The CI number is its structure number, according to which it can be retrieved for its chemical structure. The dye also has a number that is its application number for retrieving its application characteristics.

2. What is the use of dye index number?

Knowing the CI number of the dye can tell if the dyes with different trade names are the same color, and then the dyeing process can be determined;

Because many times the names of the dyes produced by different dye manufacturers are completely different, just looking at their names cannot determine their structure;

For example, there are users who have dyes in the borders. Q: I can now buy <<Dye Encyclopedia>> without B-type reactive dye application instructions, where? (Laughing at life)

The answer is: Now the B-type dye is actually not a new dye, but also mostly M-type, KN-type. If B-3BF red is M-3BE red, but different manufacturers take different models for the economic effect Another example: B-RV is actually KN-R Orchid, so don't be superstitious. (xy1236)

If you know these dye index numbers, you know which dyes have the same chemical structure as him.

3. How to check the dye index?

Domestically-published books, such as "The Newest Dye Encyclopedia", "Chemical Product Handbook - Dyestuffs," etc., will also indicate the dye's trade name and CI number, as well as the manufacturer and method of use;

Some dyestuff manufacturers will list the dye index number in the dye catalogue

Today, the dye index is produced online by the British Dyers Association (SDC) and the American Association of Textile Chemists and Colorists (AATCC).

The online version of the dye index, also known as the online database, is a collaboration between companies and research institutes in the color industry worldwide.

The purpose of the dye index is to provide a classification system for dyes and colors, and it also provides a service that allows manufacturers and suppliers to list products based on their own generic name of the dye index.

In 2010, the online version has been upgraded to the fourth edition. Many domestic companies have registered their own dye product name and CI correspondence.

The fourth edition of the online version of the dye index, also known as the fourth edition of the Fourth Edition Online Index, classifies dyes into the following 24 categories according to their application classification:

Acid Dyes Acid Dyes

Azoic Coupling Components

Ice dyeing diazo component Azoic Diazo Components

Basic dyes Basic Dyes

Direct dyes Direct Dyes

Disperse Dyes

Fluorescent Brighteners

Food Dyes Food Dyes

Reactive Dyes

Solvent dyes Solvent Dyes

Sulfur dyes Sulfur Dyes

Polycondensation Sulfur Dyes Condense Sulfur Dyes

Leuco Sulfur Dyes Leuco Sulfur Dye

Solubilised Sulfur Dyes

Vat dye Vat Dyes

Mordant Dyes

Developers Developers

Oxidation Dyes Oxidation Dyes

Insoluble Dyes

Natural Dyes Natural Dyes

Metal Pigments metal Pigments

Reducing Agents

Organic Pigments Pigments

Leather Dye Leather Dyes

The user can select the CI common name, CI structure number, manufacturer's name or address and product information to search online to find the product information he wants.

When you select the CI common name for search, you can see that for each CI common name, the corresponding product name and manufacturer (or vendor name) are listed.

The general properties of the dye can also be seen, including the CI structure number, chemical class, shade, inventor, first product name, CAS number, and EU number.

Click on the manufacturer to view the manufacturer's related information page.