Trade Name: YOBISOL BLUE RGLN · CI Number: Solvent Blue 48
Solvent Blue 48 is a bright, transparent blue solvent dye — the transparency being the defining property that drives most of its industrial use. In plastics mass colouring, it colours polycarbonate, PMMA, PET, and polystyrene with a clean, jewel-like blue that remains brilliant even at significant wall thickness, unlike pigments that scatter light and turn shades opaque. Optical component manufacturers and drink-packaging converters specify transparent solvent blues precisely because they need colour without opacity loss. The shade character is a vivid royal blue — no green bias, no violet cast at standard working concentrations.
In printing ink systems, YOBISOL BLUE RGLN dissolves readily in aromatic solvents and esters — toluene, ethyl acetate, propylene glycol monomethyl ether — making it compatible with the full range of flexographic and gravure solvent ink formulations. Colour strength is high enough that low loading levels give full shade development, which matters for ink cost at production volumes. In wax and candle applications, the dye dissolves cleanly in the paraffin melt without agglomeration and distributes evenly through the wax mass, producing consistent colour through the full candle cross-section. It blends predictably with other YOBISOL grades for tonal adjustment. Supplied by Yobai Industries as YOBISOL BLUE RGLN with batch-level colour strength and solubility verification before dispatch.
Specifications are indicative. Contact us for a batch-specific TDS before placing a bulk order.
| Parameter | Value |
|---|---|
| Product Name | Solvent Blue 48 |
| Trade Name | YOBISOL BLUE RGLN |
| CI Number | Solvent Blue 48 |
| CAS Number | Available on request |
| Colour | Blue |
| Appearance | Blue Powder |
| Ionic Character | Non-ionic |
| Solubility | Soluble in alcohols, esters, aromatic hydrocarbons, and chlorinated solvents. |
| Application pH | N/A (solvent-based) |
| Application Temp. | Ambient to 180°C (substrate dependent) |
| Molecular Weight | ~380 g/mol |
| Dye Class | Anthraquinone |
| Heat Stability | Stable to 180°C in polymer and coating systems |
| Required Auxiliaries | No ionic auxiliaries required. Dissolve in compatible solvent system before adding to the final formulation. |
| Wash Fastness | N/A (solvent-based applications) |
| Light Fastness | 4–5 |
| Packaging | 1 kg · 5 kg · 10 kg · 25 kg · 50 kg · Custom packaging available |
| Shelf Life | 5 years from manufacture (cool, dry storage) |
| Manufacturer | Yobai Industries, Sayakha, Gujarat, India |
| GSTIN | GST Registered |
Need a full TDS, COA, or MSDS? Request it here or WhatsApp us directly.
Performance values are indicative under standard test conditions. Results vary by substrate, processing temperature, and solvent system. Contact Yobai Industries for application-specific technical support.
| Property | Value / Rating |
|---|---|
| Physical Form | Fine blue powder |
| Bulk Density | ~0.4–0.6 g/cm³ (varies by grade) |
| Solubility in Toluene / Xylene | Very good — 20–40 g/L at ambient |
| Solubility in Ethanol / IPA | Good — 10–25 g/L at ambient |
| Solubility in Ethyl Acetate | Good — 15–30 g/L |
| Solubility in Water | Insoluble (<0.5 g/L) |
| Heat Stability | Stable to 180°C in processing systems |
| Migration in Plastics (PC, PMMA) | Low — suitable for transparent plastic applications |
| Light Fastness (ISO 105-B02) | 4–5 |
| Transparency in Solvent | Excellent brilliant blue — no haze |
Solubility figures are at 25°C. Batch-specific TDS available on request.
Solvent Blue 48 dissolves well in aromatic hydrocarbons and esters, making toluene and ethyl acetate the most practical solvents for preparing concentrated master batches. For ink systems, it can be dissolved directly in the ink solvent — toluene, propylene glycol monomethyl ether, or IPA — at ambient temperature with moderate stirring. Alcohol-based dissolution works well if the final formulation is also alcohol-based.
For plastics mass colouring, the dye is typically pre-blended into a carrier resin or wax concentrate at 2–5% strength, then let-down into the polymer during extrusion or injection moulding. Do not add powder directly to the polymer melt — uneven dispersion leads to colour streaks. For wax and candle applications, add to the paraffin melt at 60–80°C with continuous stirring until fully dissolved, then cool slowly to maintain even colour distribution. Always verify dissolution is complete before use — undissolved particles show as dark specks in thin-walled transparent parts.
All values are starting-point guidelines. Actual loading depends on shade depth required, substrate type, and process conditions. Trial at lab scale before committing to production.
| Application | Loading (%wt) | Solvent System | Processing Temp | Notes |
|---|---|---|---|---|
| Plastics Mass Colouring (PC, PMMA, PS) | 0.01–0.3% | Carrier concentrate | 200–260°C | Test at your specific resin and processing temp |
| Printing Inks (flexo / gravure) | 0.5–4.0% | Toluene / IPA / EtAc | Ambient | High transparency; adjust for ink film thickness |
| Wax / Candles | 0.05–0.5% | Paraffin wax melt | 60–80°C | Consistent colour through full cross-section |
| Wood Stains (blue-grey tones) | 0.05–0.3% | Aromatic / alcohol / mineral spirits | Ambient | Blends well with other YOBISOL grades |
| Fuel / Lubricant Colouring | 0.001–0.05% | Direct in fuel / oil | Ambient | For product identification; non-reactive |
| Solvent Coatings | 0.1–1.0% | Toluene / xylene / ketones | Ambient | Excellent transparency; no pigment haze |
Contact our technical team for regulatory guidance on food-contact or food-packaging applications — technical@yobaiindustries.in
Solvent Blue 48 produces a range of blue depths depending on loading concentration. The following tones are achievable under standard formulation conditions.
Final shade appearance depends on substrate type, processing temperature, and formulation. Request a lab sample for colour-critical applications.
All packs are sealed in multi-layer moisture-proof bags. Custom packaging and private labelling available for bulk buyers.
All shipments include batch-specific COA. Export packing (UN-certified drums) available on request.
Store in a cool, dry, well-ventilated area below 30°C. Keep away from heat sources, sparks, and open flames. Containers must remain sealed to prevent moisture ingress and oxidation. Keep away from strong acids and bases.
This dye is used by manufacturers across the following industries. Contact us with your specific application for a grade recommendation.
Yobai Industries carries the following grades in this dye family. Click any grade to view specifications, or view the full catalogue →
Don't see the grade you need? We carry 250+ dye grades. Contact us and we'll source or develop it for you.
MOQ 10 kg · Samples in 24 hours · Bulk in 7–15 days · Export worldwide · GST invoice with every order.