| CAS NO.: | 5281-04-9 |
|---|---|
| Formula: | C18h12n2o6sca |
| EINECS: | 226-109-5 |
| Colour: | Red |
| Appearance: | Powder |
| Usage: | Ink, Plastic, Paint, Paper |
| Samples: |
200~300grams for free
|
|---|
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier 
Pigment red 81 is suitable for all kinds of printing inks, the shade conforms to the magenta specified by the four-color version, has high tinting strength, good light fastness 4-5 grades (1/1SD).
| Shade | 57:1 BKW | 57:1 H4GL | 57:1 HMB | 57:1 Others |
| Tinting strength (%) | 100+/-3 | 100+/-5 | 100+/-5 | Check |
| Oil absorption (ml/100g) | 45-55 | 55 max | 55 max | Check |
| Moisture (%) | 3.5% max | 3.5% max | 3.5% max | Check |
| Soluble matter in water (%) | 1.5% max | 3.0% max | 3.0% max | Check |
| Conductivity (m/cm) | Siemens 500 max | Siemens 500 max | Siemens 500 max | Check |
Organic pigments (Pigment red 81) are widely used in inks, paints, coatings, raw pulp coloring of synthetic fibers, pigment printing of fabrics, coloring of plastics, rubber, and leather, etc.
Among them, the ink application is the largest.Packing: In 25kg bags craft paper bag, 400kgs/pallets.
Quantity: Around 10mts/20'fcl without pallet or 8mts/20'fcl with pallet.
1. What is the difference between Pigment red and Dye red?
The fundamental difference between pigment red and dyes red is that dyes can be dissolved in the dyeing medium used, while organic pigment red is neither soluble in the medium in which they are used nor in the substrate to be colored.
The output of organic pigment red accounts for about a quarter of the total output of dyes.
2. What is the Characteristics of Organic pigment red?
1:Blue light red, monoazo lake
2:high gloss, easy to disperse,
3:high tinting strength
4:Good anti-flocculation,
5:Light fastness level 4-5:
6:Mainly used for water-based ink, solvent ink, offset ink, plastic, etc.
7:High water resistance and tinting strength
3. How about the resistant to solvents of Pigment red 81
In ink, Pigment Red 81 is resistant to common organic solvents, but not resistant to saponification, acid or alkali, and is sensitive to varnish coatings.
If you want to prepare inks that are resistant to these media, which is similar in color, is often used.
Suppliers with verified business licenses
Audited Supplier 
){kind=link}
){kind=link}