Direct Blue 86 (Direct fast-resistant turquoise blue GL) alias direct blue L-G, celite blue GL, direct fast sapphire blue. The appearance is generally dark blue powder. Good water solubility, the solution is lake blue. Slightly sensitive to hard water. It is yellowish green in sulfuric acid, turns green and blue after dilution, has a blue-green precipitate; partially dissolved in concentrated nitric acid is yellowish green; it does not dissolve in concentrated sodium hydroxide; it is lake blue in concentrated ammonia.
TRADE NAME:Direct fast blue GL,Direct fast turquoise blue GL
| Density | 1.60 |
| Dyeing Depth % | 2 |
| Light Fastness | 2 |
| Washing Fatness | 2 |
| Rubbing Fastness(dry) | 4 |
| Rubbing Fastness(wet) | 3 |
sun exposure | soaping | flooding | perspiration | rubbing | ironing | acid and alkali resistant | |||||||
standard depth | 1/12 depth | original color change | white fiber stained | original color change | white fiber stained | original color change | white fiber stained | dry | wet | sulfuric acid | acetic acid | soda acid | |
6~7 | — | 1 | 2 | 1~2 | 1 | 1 | 1 | 3~4 | 2 | 5 | 1 | 3 | 3~4 |
Direct Blue 86 Mainly used for silk things viscose dyeing and printing, also used in viscose fabric and twisted silk and silk fabric dyeing. Also can be used for leather and paper dyeing, also can be used in the manufacture of organic pigment sediment color.
1. Direct fast-resistant turquoise blue GL dyed cotton or viscose fiber has bright emerald blue. The dyeing rate is general, the leveling property and the transferability are poor. When dyeing, salt should be added to control the dyeing to obtain uniform color. The highest dyeing temperature is 100 °C.
2. Direct fast-resistant turquoise GL is used for dyeing rich fiber, the dyeing rate is poor, the color is lighter than cotton, and it is also used for the dyeing of silk, wool and nylon. When dyeing vinyl fabric, the dyeing rate is worse than cotton, the color ratio is Viscose fiber is blue. When cotton, viscose fiber and other fibers are dyed in the same bath, silk and wool are lighter than cotton and viscose fiber, nylon and diacetate are slightly stained, triacetate, polyester and acrylic. Almost no staining (some products have stained polyester and acrylic).
3. Direct fast-resistant turquoise GL can be mixed with disperse dyes at high temperature to dye polyester-bonded fabrics. The dyeing bath is heated to 120 ° C under neutral conditions, or loaded with boiling dye. After the dyes are dyed with polyester, cool down. After dyeing for half an hour, the cellulose fibers are fully colored, and the dye is exhausted, and the color light is basically unchanged.
4.Direct Blue 86 (Direct fast blue GL) can be used for continuous padding of cotton. After padding, it is treated with 10~25g/L yuan powder boiling bath, then steamed at 100~103°C for 1-3min.
5. Direct fast-resistant turquoise GL can be used for direct printing of cotton or viscose fabrics. When printing deep-dense patterns, add urea and disodium hydrogen phosphate to prepare color paste. It can also be used for printing silk, wool and nylon fabrics.
6. Direct Blue 86 (Direct fast blue GL) bright color, good light fastness, is one of the commonly used dyes. Mainly used for dyeing and printing of viscose fabric, also used for cotton knit, cotton skein and viscose skein Dyeing or printing. It is not easy to dye dark, and the dyeing amount of dyeing or dip dyeing usually does not exceed 3% (owf), the dosage is increased, and the color is no longer deepened.
It is commonly applied by exhaust dyeing in aqueous baths (with salt to promote uptake) and can be formulated into print pastes for package printing where direct dyes are acceptable. Processing conditions should be optimized for even leveling and fixation.
Leveling and wetting agents help evenness; salt (electrolyte) increases exhaustion on cotton; leveling agents prevent streaking on knits. Routine use of standard direct-dye auxiliaries will improve shade consistency and handleability.
Direct dyes typically show moderate wash and wet-rubbing fastness and variable lightfastness. Fastness improves with thorough rinsing, fixing procedures (where applicable), and by selecting complementary auxiliaries or after-treatments recommended in the technical datasheet.
Yes — it blends well with other direct dyes for economical shading and to achieve nuanced tones. Always make small lab-scale trials and record recipes; blends can change fastness and tone.
Handle as with other textile dyes: avoid skin/eye contact, use proper PPE, and follow local discharge regulations for dye bath effluents. Consult the product SDS for storage, handling, and waste-disposal guidance.
Store in a cool, dry, well-ventilated area away from strong acids and oxidizers. Keep containers tightly closed and follow shelf-life recommendations on the technical datasheet to maintain performance.
Yes — lab samples and technical support for dye recipe trials are typically available. Request small-scale samples and share fabric construction and desired depth of shade so lab technicians can propose starting recipes and process parameters.
