Direct Green 6 alias direct dark green B, direct green. The appearance is generally dark gray uniform powder. Water soluble is still good, slightly sensitive to hard water. Soluble in water, dark green, soluble in acetone and cellosolve, slightly soluble in alcohol, insoluble In other organic solvents, it is purple-black in concentrated sulfuric acid, and turns purple-black to black after dilution; it is purple in concentrated hydrochloric acid or concentrated nitric acid; it does not dissolve in concentrated sodium hydroxide; it is dark green in concentrated ammonia water. The aqueous solution plus light sulphuric acid turns slightly blue, and the concentrated hydrochloric acid has a dark blue green precipitate, and the concentrated sodium hydroxide turns dark green to olive color. When both copper and iron ion light are turned dark.
TRADE NAME:Direct Green B,Direct Dark Green B,Cotton GreenB,Direct Brilliant GreenC,Direct Brilliant Green CBM,Direct Green A,Direct Green B,Direct Green BG,Direct Green BN,Direct Green BP,Direct GreenBX,Direct Green MB,Naphtamine Green B,Nippon Green B,OrbaminGreen B,Phenamine Green BG,Pheno Bright Green
| Dyeing depth % | 2 |
| Insolubles % | 0.15 |
| Light Fastness | 2 |
| Washing Fatness | 2-3 |
| Rubbing fastness(dry) | 4 |
| Rubbing fastness(wet) | 3 |
Solubility(g/L) | SDC classification | displacement(grade) | metal ion effect(grade) | discharge property(grade) | other features | ||
copper | iron | neutral | basic | ||||
— | C | 3 | 1 | 4 | 5 | 4 | — |
sun exposure | soaping | flooding | perspiration | rubbing | ironing | acid and alkali resistant | |||||||
standard depth | 1/12 depth | original colorchange | white fiber stained | original color change | white fiber stained | original color change | white fiber stained | dry | wet | sulfuric acid | acetic acid | soda ash | |
— | — | 3 | 1~2 | 4 | 3 | 4 | 3 | 4~5 | 2 | 4~5 | 4 | 1~2 | 1~2 |
Direct Green 6 Mainly used for cotton, hemp, such as glue of cellulose fiber dyeing, also used in cotton and viscose fabric dyeing and printing, also used for silk, polyamide fiber, stick/hair, sticky/ Kam fabric dyeing and printing. Can also be used in paper, soap, leather, regenerated celluloee fiber film shading, also used in the manufacture of color pigment sediment.
1. Used to dye cotton or viscose fiber to get dark yellow green. Good dyeing rate, poor transferability, slow temperature rise during dyeing and salt addition to control dyeing, can obtain uniform color. The stage dyeing solution should be naturally cooled to 80 ° C, which is beneficial to the dye exhaustion.
2.Used to dye wool, silk and nylon, dyed wool can be added with ammonium acetate to aid dyeing. Dyeing is generally done by padding, and ammonium tartrate is used as fixing agent. Cotton, viscose fiber and other fibers When bath dyeing, silk, wool and cotton and viscose fiber have the same depth, nylon can be dyed, polyester and acrylic are light yellow, and diacetate is slightly yellow.
3. Has also been used for direct printing of cotton or viscose fabrics, mainly for printing dark green, good dyeing performance for ground color discharge, and also for direct printing of silk, nylon and wool fabrics. And the color of the silk fabrics.
4. Used to be one of the main green direct dyes. It can be dyed with direct blue lake 5B, 6B and direct frozen yellow. Neutral dyeing bath should be used for direct green B dyeing. Neutral color should be used for printing. Pulp, such as using an alkaline dye bath or color paste, will make the shade dark
Direct Green 6 can decompose benzidine, which is a banned dye. The substitute dye is direct dark green N-B.
On cotton and viscose fibers, Direct Green 6 shows high affinity and good penetration, producing uniform dyeing results. It also provides good leveling properties, which helps prevent streaking or uneven shades.
Yes, Direct Green 6 is compatible with other direct dyes. It is often blended with yellow or blue direct dyes to create customized green shades or enhance brightness in textile and paper coloration.
Direct Green 6 provides moderate wash and light fastness. While it performs well for general applications, additional finishing treatments may be applied if enhanced fastness is required for specific end uses.
Besides the textile sector, Direct Green 6 is also widely used in leather finishing, paper dyeing, and certain specialty chemical applications where water-soluble dyes are required.
