Direct Red 227 is a water-soluble direct (substantive) red dye formulated for cellulose fibers and paper, offering bright shade, easy application and reliable dyeing performance in exhaust, padding and printing processes.
TRADE NAME:Direct Fast Red FR,Direct Rose FR,Direct Blending Brilliant red D-FR,Solophenyl Red 7BE
| Dyeing depth % | 2 |
| Insolubles % | 0.15 |
| Light Fastness | 3 |
| Washing Fatness | 4-5 |
| Rubbing fastness(dry) | 4 |
| Rubbing fastness(wet) | 3 |
sun exposure | standard depth | 3~4 |
1/12 depth | — | |
soaping | original color change | 4 |
white fiber stained | 3 | |
flooding | original color change | — |
white fiber stained | — | |
perspiration | original color change | 4~5 |
white fiber stained | 4~5 | |
rubbing | wet | 3~4 |
dry | 4~5 | |
ironing | — | |
acid and alkali resistant | sulfuric acid | — |
acetic acid | — | |
soda ash | — |
Direct red 227 Used for cellulose fiber and polyester/cotton, polyester/stick blended a bath dyeing of, also can be used for paper color.
Direct Red 227 For the one-bath one-step dyeing process of polyester-cotton, polyester-bonded or cotton-nitrile blended fabrics, the dyeing of cotton and viscose fibers can be dyed in the same bath as the disperse dyes or as a direct dye.
It has high directness to cellulose fiber and high dye uptake rate, that is, it also has a high dye uptake rate when a small amount of inorganic salt is used.
The dye solution has good stability and does not agglomerate in the dye bath at 130 ° C. The pH value of the dye bath Wide adaptability, good dyeing rate for cellulose fibers under acidic conditions.
Dissolve the dye in hot water to make a clear stock solution, add to the dye bath at 40–60°C for pre-wet cotton, raise temperature gradually to 60–80°C for exhaustion, hold until target exhaustion, then carry out an alkaline/oxidative fixation or rinse/soaping as your process specifies. Use a small amount of leveling agent to prevent patchiness on coarser yarns.
After dyeing, perform a hot soaping step with 1–3 g/L nonionic detergent at 60–70°C to remove unfixed dye, then neutralize and rinse. For tougher wet-rub needs, consider a cationic after-fixing agent or polymeric crosslink/finishing that is compatible with the substrate; test impact on hand and shade before production scale-up.
Yes — it works well in direct dye printing pastes. Use a thixotropic gum base (e.g., modified starch or CMC with a binder), keep dye concentration moderate to avoid bleeding, and include a sequestrant and leveling assistant. Steam fixation (pad-steam) followed by thorough washing / soaping gives the best balance of color yield and fastness.
It is suitable for water-based paper coloration and some aqueous inks where a soluble dye is acceptable. For inkjet use, ensure the formulation controls migration (use humectants and binders) and test bleed/feathering on your paper grade. For printed packaging that needs lightfastness, evaluate alternatives or UV-protective overcoats.
Watch for shade shift (slight hue differences), differences in exhaustion kinetics (may require temperature or liquor ratio adjustments), and compatibility with your current auxiliaries. Run lab trials to match shade and fastness; small changes in pH, sequestering agents, or leveling agents can alter performance noticeably.
Store in a cool, dry place away from strong oxidizers and sunlight. Keep the product in tightly closed containers to avoid moisture pickup. For concentrated stock solutions, label clearly and use within recommended holding times; follow standard safety data sheet guidance for PPE and wastewater handling.
