
Product Name: Solvent Blue 122 / Transparent Blue 2RA
Chemical Name:
N-[4-[(4-Hydroxy-9,10-dioxo-9,10-dihydroanthracen-1-yl)amino]phenyl]acetamide
Color Index: C.I. 61568
CAS: 67905-17-3
Molecular Formula: C22H16N2O4
Formula Weight: 372.37 – 372.4 g/mol
Synonyms: Transparent Blue 2RA; Solvent Blue R; Solvent Blue RLS; Blue R; N-{4-[(4-hydroxy-9,10-dioxo-9,10-dihydroanthracen-1-yl)amino]phenyl}acetamide; Plast Blue 5005; Blue X3RP; Blue 2R
Application:
Engineering Plastics (PS, ABS, SAN, PMMA, PC, PET, PBT, PA6, PA66, Rigid PVC), Polyester Fibers (Dope Dyeing, Spin Dyeing), PET Bottle Grade Resins, Printing Inks, Wood Stains, Aluminum Foil & Hot Stamping Foils, Leather Finishes, Rubber, Gasoline & Oils, Lubricants, Waxes & Candles
1.Product Description
Achieve Brilliant, High-Performance Blue Coloration with Solvent Blue 122
–The Premium Anthraquinone Dye for Engineering Plastics and Polyester Applications.
Solvent Blue 122, designated as C.I. 61568 and widely known as Transparent Blue 2RA, is a high-performance anthraquinone-based solvent dye renowned for its excellent heat resistance, outstanding lightfastness, and brilliant reddish-blue shade . This sophisticated dye features a unique hydroxyanthraquinone-amine molecular structure that delivers superior thermal stability and exceptional compatibility with a wide range of engineering polymers .
What distinguishes Solvent Blue 122 from conventional solvent dyes is its exceptional combination of heat stability, lightfastness, and migration resistance. With heat resistance up to 300°C and lightfastness ratings of 6-8, this dye maintains its vibrant color through demanding injection molding, extrusion, and fiber spinning operations . The dye's anthraquinone chemistry provides excellent acid and alkali resistance (Grade 4-5), ensuring color stability in aggressive environments .
Key differentiators:
Anthraquinone Chemistry: Provides superior thermal stability, lightfastness, and chemical resistance compared to azo-based alternatives .
Exceptional Heat Resistance: Withstands processing temperatures up to 300°C, suitable for high-temperature engineering plastics .
Brilliant Reddish-Blue Shade: Delivers a clean, transparent reddish-blue hue with high color strength and excellent clarity .
Outstanding Lightfastness: Rated 6-8 (on an 8-point scale), ensuring long-lasting color in outdoor and UV-exposed applications .
Excellent Migration Resistance: Grade 5 migration resistance prevents color bleeding in finished products .
Broad Polymer Compatibility: Suitable for PS, ABS, SAN, PMMA, PC, PET, PBT, PA6, PA66, and rigid PVC .
2.Specification:
| Property | Specification | Insight |
| Product Name | Solvent Blue 122 (C.I. 61568) | Premium anthraquinone dye for engineering plastics |
| Appearance | Blue to blue-black uniform powder | Free-flowing, fine powder |
| Color Shade | Reddish-blue | Transparent, brilliant blue with red undertone |
| CAS No. | 67905-17-3 | Verified chemical registry number |
| EINECS/EC No. | 267-636-0 | Listed in European inventory |
| MDL Number | MFCD08458446 | |
| Molecular Formula | C₂₂H₁₆N₂O₄ | Anthraquinone derivative |
| Formula Weight | 372.37 - 372.4 g/mol | Precise molecular mass |
| Solubility | Slightly soluble in water (224 μg/L at 25°C); soluble in organic solvents (benzene, chlorobenzene, DMF, DMSO) | Hydrophobic nature; suitable for solvent-based systems |
| Ionic Style | Non-ionic / Solvent Dye | Compatible with various polymer systems |
| Tinting Strength | 100% ± 3% (vs. standard) | High color strength with consistent performance |
| Purity | ≥ 98% - 99% | High purity ensures consistent batch-to-batch performance |
| Density | 0.56 - 1.45 g/cm³ | Varies by grade and formulation |
| Melting Point | 210 - 220°C | Good thermal stability for processing |
| Heat Resistance | 210 - 300°C | Exceptional thermal stability; higher in some polymers |
| Lightfastness | Grade 6-8 (1-8 scale) | Outstanding UV resistance |
| Acid Resistance | Grade 4-5 | Excellent resistance to acidic conditions |
| Alkali Resistance | Grade 5 | Outstanding resistance to alkaline conditions |
| Water Resistance | Grade 5 | Excellent resistance to water migration |
| Ash Content | ≤ 0.5% | High purity with minimal inorganic residues |
| Moisture Content | ≤ 1.0% | Low moisture ensures stability |
| Residue on 80 Mesh | ≤ 5.0% | Fine particle size for uniform dispersion |
| Total Heavy Metals | ≤ 50 ppm | Compliant with international standards |
| Storage Conditions | Store in cool, dry, ventilated warehouse; keep containers tightly sealed | Shelf life: 3-5 years under proper storage |
| Packing | 25 kg fiber drums / cardboard cartons with PE inner liner; custom sizes available | Secure, moisture-proof packaging |
| Application | PS, ABS, SAN, PMMA, PC, PET, PBT, PA6, PA66, rigid PVC, polyester fibers, printing inks, wood stains | Versatile across multiple industries |
3.Product Application
Engineering Plastics & Thermoplastics – Primary Application:
Solvent Blue 122 is the preferred colorant for high-performance engineering plastics, delivering exceptional heat stability and brilliant transparent coloration across a wide range of polymers。
Polyester Fibers & PET Applications:
Solvent Blue 122 is widely used in polyester applications due to its excellent solubility in PES melt and high thermal stability :
Dope Dyeing / Spin Dyeing: Added during fiber spinning for permanent, wash-fast coloration of filaments and fibers.
PET Bottle Grade Resins: Suitable for stretch blow molding applications; provides brilliant blue coloration for beverage and personal care bottles.
Polyester Films: Colors transparent and opaque polyester films.
Printing Inks & Coatings:
Solvent Blue 122 is highly recommended for printing ink and coating applications :
Gravure & Flexographic Inks: Provides deep blue coloration with excellent solubility in organic solvents.
Aluminum Foil & Hot Stamping Foils: Offers good adhesion, gloss retention, and heat resistance.
Wood Stains: Provides transparent reddish-blue coloration that enhances wood grain.
Leather Finishes: Suitable for top-coat and drum dyeing applications.
Specialty Applications:
Rubber: Colors natural and synthetic rubber compounds.
Gasoline & Oils: Used as a marker dye for fuel identification and leak detection.
Lubricants: Colors industrial and automotive lubricants.
Waxes & Candles: Provides uniform coloration for decorative and industrial wax products.
4.Our advantage:
1) Provide free samples for testing or comparing the effect difference and cost performance.
2) Fast response speed, customers' questions at any time will be responded to in two hours.
3) Fast delivery: the fastest delivery can be made on the same day.
4)Different packaging solutions: provide various packaging options according to customer requirements.
5)Technical guidance: provide improved whitening and coloring formulas and guidance according to customer production materials.
6) Sample retention or sample mailing before bulk delivery.
7) Providing certificationes, such as Reach certification.
8) Different payment methods: TT LC, etc.
9) Providing door-to-door DDP service.
5.Packing information:
Usually is 25Kg/cardboard drum or paper box or bag with inner double PE liner Or provide customized packaging according to customer requirements