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CAS 81-63-0 1,4-Diamino-2,3-dihydroanthraquinone
Overview
1,4-Diamino-2,3-dihydroanthraquinone is a violet-tone anthraquinone dye intermediate/colorant for disperse dye formulations (polyester, acetate, blends) and solvent/disperse applications in plastics, masterbatches, inks, and coatings.
Product Description
88-04-0 4-Chloro-3,5-dimethylphenol
The 1,4-diamino substitution delivers high tinctorial strength, clean bluish-violet hue, excellent heat/light stability, and good sublimation/migration resistance on polyester. Shandong Yinglang Chemical CO.,LTD, a chemical manufacturing company, produces and supplies this intermediate with consistent assay and particle-size control, offering COA/TDS/SDS, technical support, and lab-to-bulk packaging (custom milling/OEM packs on request).
1,4-Diamino-2,3-dihydroanthraquinone — Product Specification
Chemical class: Anthraquinone dye intermediate (violet tone) | Formula type: Disperse/solvent colorant raw material
Identity & Form
| Appearance | Violet to dark-violet crystalline powder |
|---|---|
| Solubility | Insoluble in water; soluble in chlorobenzene, o-dichlorobenzene, DMF/DMSO; dispersible in selected glycol/solvent systems |
| End-use platforms | Disperse dye formulations for polyester/acetate; plastics/masterbatch; printing inks and coatings |
| Documents | COA · TDS · SDS · Non-use statements (on request) |
Typical Specification (example)
| Assay (HPLC, main component) | ≥ 98.0% (w/w) |
|---|---|
| Color strength (vs. internal std.) | 100% ± 3% |
| Shade difference (ΔE*, CIELab) | ≤ 1.0 (against standard) |
| Moisture / Loss on drying | ≤ 1.0% (105 °C) |
| Total ash | ≤ 0.50% |
| Residue on 45 μm sieve | ≤ 0.10% |
| Particle size (laser) | D90 ≤ 1.0 μm (custom milling available) |
| Insoluble in xylene (2% slurry) | ≤ 0.50% |
| Organic impurities (HPLC) | Total ≤ 1.0% |
| Heavy metals (as Pb) | ≤ 10 ppm |
| Appearance (QC) | Free-flowing; no visible foreign matter |
Application Performance (typical)
| Sublimation / migration on PET | Good resistance (meets grade standard; see COA) |
|---|---|
| Heat stability (processing) | High; suitable for polyester dyeing and polymer/plastics coloration |
| Lightfastness | Good for disperse dye class (substrate/processing dependent) |
Applications & Handling
| Main uses | Disperse dyeing/printing (polyester/acetate); plastics masterbatch; solvent/disperse inks & coatings |
|---|---|
| Processing | Fine milling (≈0.2–1 μm) with nonionic/anionic dispersants; build stable dispersions for padding/exhaust/printing |
| Handling | Handle dust as irritant; avoid strong oxidizers/reductants and excessive heat; use PPE/ventilation |
| Storage | Keep tightly closed, cool and dry; protect from light and moisture |
Packaging & Logistics
| Packaging | 10–25 kg fiber drums or multi-layer bags (inner PE liner); custom OEM/milling on request |
|---|---|
| Ports | Qingdao · Shanghai · Tianjin |
| To quote (please specify) | Target assay/shade/strength, particle size, pack size, destination country/port, and documentation |
© Shandong Yinglang Chemical CO.,LTD · Information for B2B technical marketing only.
PACKING AND DELIVERY
Packing and delivery
We offer secure and compliant packaging for a wide range of chemical products, from laboratory bottles (100 mL, 250 mL, 500 mL) to customized bulk containers. All shipments follow international hazardous goods standards and include complete documentation such as COA and SDS. With reliable global logistics partners, we ensure safe, fast, and efficient delivery by air, sea, or land according to customer needs.