Disperse Yellow 4G with C.I. Disperse Yellow 211
Disperse Yellow 211 (Disperse Yellow 4G) is a type of disperse dye mainly used for dyeing and printing of polyester and its blended fabrics.
Physical & Chemical Properties
1.Appearance: Light brown / yellow powder or granular form; commercial standard strength: 200%
2.Melting Point: 227~229℃
3.Solubility: Insoluble in water, soluble in acetone, alcohols, aromatic solvents and other organic solvents
4.Dispersion Technical Index
- Diffusion grade: ≥ Grade 4
- Room-temperature dispersibility: ≥ B/3 grade
- High-temperature dispersion stability: ≥ B/3 grade
5.Hue: Bright greenish yellow with vivid and saturated shade
Color Fastness (Polyester, medium depth, ISO Standard)
|
Fastness Item |
Grade |
Remarks |
|
Light Fastness |
6~7 Grade |
Excellent weather resistance |
|
Washing Fastness |
Fading: Grade 5; Staining: Grade 5 |
Low cotton staining for polyester-cotton blends |
|
Perspiration Fastness (Acid & Alkaline) |
Fading: Grade 5; Staining: Grade 5 |
Outstanding resistance to acidic & alkaline sweat |
|
Ironing Fastness |
Fading: Grade 5; Staining: Grade 4~5 |
Compatible with heat setting process |
|
Sublimation Fastness |
Grade 4 |
Moderate sublimation resistance |
|
Rubbing Fastness (Dry & Wet) |
Grade 4~5 |
Low surface floating color & staining tendency |
Applicable Dyeing Processes
1.High-temperature high-pressure exhaust dyeing (Preferred)
Dyeing temperature: 130℃; heat setting temperature: 220~230℃~230℃
2.Thermosol pad dyeing: Suitable for one-bath / two-bath dyeing of polyester-cotton fabrics
3.Carrier dyeing: Normal atmospheric pressure dyeing for polyester
4.Post-treatment: Reduction clearing with sodium hydrosulfite + caustic soda at 70~80℃ to remove floating color and improve fastness
Application Scope
1.Textile Industry
- Dyeing and printing for polyester, polyester-cotton, polyester-viscose fabrics
- Applicable to nylon, acetate fiber coloration
- Tolerant to wrinkle-free & durable press finishing treatments
2. Color Matching: Widely used yellow component for three-primary color blending; good compatibility with disperse red & disperse blue to formulate dark shades including dark brown, olive, army green
3. Other Fields: Plastic coloration, solvent-based ink, heat transfer printing ink
Advantages & Disadvantages
Advantages:
- Bright shade, high tinting strength, superior fastness to light, washing and perspiration
- Stable dispersion system, no agglomeration & filter clogging under high temperature
- Low cotton staining during polyester-cotton dyeing, excellent color matching compatibility
Disadvantages:
- Medium sublimation fastness, not suitable for harsh high-temperature pleating & high-temperature transfer printing scenarios
- Inferior anti-thermal migration performance compared with Disperse Yellow 54
Packaging & Storage
- Standard package: 25kg woven bag / fiber drum
- Storage requirement: Sealed, cool, dry & ventilated warehouse
- Shelf life: 2 years
