Solvent Black 27 CAS 12237-22-8 is a 1:2 chromium azo metal-complex solvent dye. It is oil-soluble, with strong tinting strength, excellent heat resistance and light fastness. It dissolves well in various organic solvents and resins, widely used for transparent colouring of plastics, coatings, printing inks, leather and wood stains. TNJ Chemical is the key manufacturer and exporter since from 2001. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To find more, please contact sales@tnjchem.com
Product Information
Product Name Solvent Black 27
CAS No. 12237-22-8
C.I. Number C.I. Solvent Black 27
Synonyms Solvent Black RL, Black X51, Black 3840
Chemical Type 1:2 Chromium azo metal complex
Molecular Formula C₁₇H₁₃Cr₀.₅N₃O₄
Appearance Black powder
Chemphysical Properties
Solubility Insoluble in water; soluble in MEK, alcohols, propylene glycol ether, ethyl acetate, toluene and other organic solvents; good compatibility with natural & synthetic resins
Solubility in MEK ≥500 g/L (20℃)
Solubility in Ethanol ~60 g/L (20℃)
Heat Stability Stable at 180℃ for 10 min; suitable for plastic high-temperature processing
Light Fastness Grade 7
pH (1% organic solution) 6.0–8.0
Tinting Strength 100±3% vs standard sample
Quality Specification
| Test Item | Specification |
|---|---|
| Appearance | Black uniform powder |
| Tinting Strength | 98%–102% |
| Shade | Conform to standard sample |
| Moisture | ≤2.0% |
| Insoluble matter in MEK | ≤1.0% |
| Ash Content | ≤0.5% |
Application & Use
Coatings & Varnish: Transparent black stain for wood coating, aluminium foil lacquer, transparent baking varnish.
Printing Ink: Solvent-based ink for packaging, gravure ink, screen ink.
Plastic Coloring: Transparent colouring of PS, PMMA, PC, PET and other thermoplastics.
Leather & Textile: Dyeing for leather finishing, synthetic fiber solvent dyeing.
Others: Colouring for wax, grease, petroleum products and aerosol coatings.
Packing Delivery & Storage
Packing: 25kg fibre drum with inner PE bag; small sample packaging available, customized packing acceptable.
Delivery: Samples available, bulk stock for prompt shipment. Shipment by sea/air to global ports.
Storage: Store in cool, dry, ventilated warehouse, tightly sealed. Keep away from strong acid, strong alkali, oxidants and direct sunlight.
Shelf Life: 24 months under proper sealed storage.
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