Direct Orange 39

Application Features

Red light orange. Red brown powder. Soluble in water for golden brown, solubility of 50 g/L (60 ℃), 60 g/L (97 ℃), slightly soluble in alcohol. In the strong sulfuric acid as dark blue, orange for gold after diluted. The dye solution to join strong hydrochloric acid have yellow olive brown precipitation; Add thick sodium hydroxide solution have orange precipitation. Cellulose fiber of dyeing, in 80 ℃ maximum when affinity, is suitable for the neutral, weak alkali dyeing. Hard to a little sensitive. In dyeing copper and iron ion colored light basic unchanged.

Appearance is reddish brown uniform powder. Very good water solubility, slightly sensitive to hard water, soluble in water, golden orange, slightly soluble in alcohol, pale golden to brownish yellow. The sulfuric acid is dark blue, and after dilution, it turns golden yellow. The aqueous solution is concentrated with hydrochloric acid and has a yellow olive brown precipitate. The concentrated sodium hydroxide has a brownish orange precipitate. The iron and copper ion color are basically unchanged.

Mainly used in viscose and viscose fabric dyeing and printing, Exhaust dyeing, printing and can be directly to white color, also can used for leather and paper shading, knitting fabric and carpet can be used and disperse dyestuff used for the high temperature dyeing polyester/stick blended fabric.

Use condition:

1. Direct fast-resistant orange GGL dyed cotton or viscose fiber is bright orange. The dyeing and leveling property is poor. When dyeing, salt should be added to control the dyeing to obtain uniform color. The dyeing rate is good, after dyeing The stage dyeing solution should be naturally cooled to 80 ° C, which is beneficial to the dye exhaustion. After dyeing, the color light is not changed by the urea-formaldehyde resin, and the color light is reddish by the cyanoaldehyde resin. If the color treatment is not changed with the fixing agent, if sulfuric acid is used, The copper treatment color dimmed.

2. It can also be used for the dyeing of silk and its fabrics, usually with Yuanming powder and acetic acid as the dyeing agent. When cotton, viscose fiber and other fibers are dyed in the same bath, the color ratio of silk, nylon and wool The cotton and viscose fiber are light, the acrylic fiber is slightly stained, and the polyester, the diacetate fiber and the triacetate fiber are almost non-stained.

3. It can be mixed with disperse dyes in high temperature dyeing and blending fabrics. The dyeing bath is heated to 120 ° C under neutral conditions, or loaded with boiling dye. After the dyes are dyed with polyester, the temperature is continued. After dyeing for half an hour, the cellulose fibers are fully colored, and the dye is exhausted, and the color light is substantially unchanged.

4. It can be used for direct printing of cotton or viscose fabrics, using urea and disodium hydrogen phosphate to prepare color paste. It can also be used for ground color discharge, generally using neutral pull white pulp.

5. Direct Orange 39 is mainly used for dyeing and printing of viscose fiber and viscose fabric, cotton knit and carpet, etc. It can be used for continuous padding of cotton, steaming after 100~103 °C after padding. 1~2min.