Solvent Yellow 160:1 / Solvent Dyes
Solvent Dyes
Technical Information
CAS No.: 94945-27-4 /35773-43-4
Molecular formula: C20H17ClN2O3
Features: Good heat resistance and light resistance, good migration resistance and high tinting strength with wide application.
Application: Used in PS , HIPS, ABS, ,PC, PMMA, SAN, AS, PET, polyester fiber, and limited used in PA6 fiber.
Solvent Yellow 160:1 (CAS 94945-27-4 / 35773-43-4) is a premium greenish-yellow fluorescent dye designed for high-performance polymer coloring and specialty applications. With its coumarin-derived molecular architecture (C₂₀H₁₇ClN₂O₃), this solvent dye produces an intense fluorescent yellow-green shade that delivers exceptional visual impact at extremely low concentrations — as little as 0.03% for transparent formulations.
In industrial plastics manufacturing, Solvent Yellow 160:1 is valued for its broad polymer compatibility spanning PS, HIPS, ABS, PC, PMMA, SAN, AS, PET, and polyester fibers, with limited but viable use in PA6 fiber applications. The dye achieves Grade 6-7 lightfastness across PS, ABS, PMMA, and PET systems, and sustains processing temperatures up to 300°C in polystyrene and polycarbonate — covering the full range of standard extrusion and injection molding conditions. Its acid and alkali resistance of Grade 4-5 across all tested substrates ensures reliable performance in chemically aggressive environments, from industrial cleaning product containers to chemical storage vessels.
Compared to similar yellow fluorescent dyes like Solvent Yellow 185 or Solvent Yellow 98, Solvent Yellow 160:1 offers broader polymer compatibility (particularly in PET and PC) and superior chemical resistance, making it the preferred choice for applications requiring both visual brightness and functional durability.
Description
Solvent Yellow 160:1 is a greenish yellow fluorescent dye.
It has good heat resistance and light resistance, good migration resistance and high tinting strength with wide application.
Solvent Yellow 160:1 is allowed to be used in PS , HIPS, ABS, ,PC, PMMA, SAN, AS, PET, polyester fiber, and limited used in PA6 fiber.
Identification Information:
Color Index: Solvent yellow 160:1
CAS No.: 94945-27-4 /35773-43-4
Molecular formula: C20H17ClN2O3
Product specification
Appearance Green Yellow powder
Tinting Strength 100±3%
Shade Color Similar to the standard,
Ash ≤ 0.5%
Moisture ≤ 0.5%
Color Differential ValueΔE ≤ 0.8
Density g/cm3 1.36
Melting Point ℃ 209
Technical Data
| Test Items | PS | ABS | SAN | PMMA | PC | R-PVC | PA6 | PET |
| Heat resistance temperature, ℃
(0.05% dyes, transparent) |
300 | 280 | – | – | 300 | – | – | 280 |
| Heat resistance temperature, ℃
(0.05% dyes + 1.0% Titanium dioxide) |
300 | 280 | – | – | 300 | – | – | 280 |
| Migration resistance | – | – | – | – | – | – | – | – |
| Light fastness (0.05% dyes, transparent) | 6 | 6-7 | 6 | 6-7 | 6 | 6 | – | 6-7 |
| Weather resistance | – | – | – | – | – | – | – | – |
| Acid resistance (in 5% hydrochloric acid solution) | 4-5 | 4-5 | 4-5 | 4-5 | 4-5 | 4-5 | 4-5 | 4-5 |
| Alkali resistance (in 5% caustic soda solution) | 4-5 | 4-5 | 4-5 | 4-5 | 4-5 | 4-5 | 4-5 | 4-5 |
Solvent yellow 160 solubility in organic solvent at 20℃(g/l)
| Acetone | Butyl Acetate | Methylbenzene | Dichloromethane | Ethylalcohol |
| 5.2 | 4.2 | 10.6 | 2.3 | 5.1 |
Technical Parameter Interpretation
Heat Resistance (300°C in PS/PC, 280°C in ABS/PET): This rating reflects the maximum processing temperature at which Solvent Yellow 160:1 retains its fluorescent properties and color accuracy. The 300°C threshold in PS and PC covers virtually all standard processing conditions, while the 280°C rating in ABS and PET aligns with typical melt temperatures for these polymers, ensuring full color development without thermal degradation.
Lightfastness (Grade 6-7): Measured on the Blue Wool Scale (1-8), this rating indicates very good to excellent resistance to UV-induced fading. Solvent Yellow 160:1’s consistent lightfastness across multiple polymer substrates — PS, ABS, SAN, PMMA, PC, R-PVC, and PET — ensures long-term color stability for products exposed to indoor lighting and moderate outdoor conditions.
Acid/Alkali Resistance (Grade 4-5): Unlike many fluorescent yellow dyes that degrade in acidic or alkaline environments, Solvent Yellow 160:1 maintains Grade 4-5 chemical resistance across all tested polymer systems. This property is critical for containers holding household cleaners, automotive fluids, or industrial chemicals where the colored packaging must resist chemical attack.
Density (1.36 g/cm³) & Melting Point (209°C): The dye’s density ensures uniform distribution in polymer melts without sedimentation. The 209°C melting point facilitates rapid dissolution during processing, promoting homogeneous color distribution even in complex mold geometries with varying wall thicknesses.
Recommended Dosage (0.03% transparent / 0.05% opaque): Solvent Yellow 160:1’s high tinting strength means significantly lower loading compared to standard yellow dyes. This reduces raw material costs and minimizes any potential impact on polymer mechanical properties while delivering full, vibrant coloration.
Application
| PS | ● | PET | ● | PC | ● |
| AS | ● | PVC- R | ○ | SAN | ● |
| ABS | ● | PVC-U | ● | HIPS | ● |
| PMMA | ● | PA6 | ○ |
Note: ● = recommended ○ = potential use – = not recommended
Frequently Asked Questions — Solvent Yellow 160:1
What makes Solvent Yellow 160:1 different from other yellow solvent dyes?
Solvent Yellow 160:1 (CAS 94945-27-4 / 35773-43-4) is a greenish-yellow fluorescent dye with a unique combination of high heat resistance (up to 300°C in PS and PC) and Grade 6-7 lightfastness across multiple polymer systems. Its fluorescent properties deliver exceptionally bright, eye-catching coloration at very low dosages — just 0.03% for transparent applications. The dual CAS number reflects its specific molecular configuration, which provides superior migration resistance and tinting strength compared to conventional yellow solvent dyes.
Is Solvent Yellow 160:1 suitable for PET and polyester fiber applications?
Yes, Solvent Yellow 160:1 is recommended for PET with heat resistance up to 280°C and Grade 6-7 lightfastness. It is also suitable for polyester fiber applications. For PA6 fiber, usage is limited and we recommend testing before bulk adoption. The dye’s excellent solubility profile — 10.6 g/L in toluene, 5.2 g/L in acetone — facilitates uniform dispersion in polymer melts during extrusion and spinning processes.
What are the recommended dosage levels for Solvent Yellow 160:1?
For transparent applications, 0.03% concentration is typically sufficient to achieve full color development. For opaque formulations using titanium dioxide, 0.05% is recommended. Solvent Yellow 160:1’s high tinting strength means lower pigment loading is needed compared to standard yellow dyes, reducing material costs while maintaining consistent color performance across production runs.
How does Solvent Yellow 160:1 perform under chemical exposure?
Solvent Yellow 160:1 demonstrates Grade 4-5 resistance to both acids (5% HCl solution) and alkalis (5% NaOH solution) across all tested polymer systems including PS, ABS, SAN, PMMA, PC, R-PVC, PA6, and PET. This chemical resistance makes it suitable for industrial applications where colored products may encounter aggressive cleaning agents, chemical reagents, or outdoor environmental exposure.
Recommended Dosage
Transparent: 0.03%
Non-transparent: 0.05%
Packaging:
Regular Packaging is in 25kgs paper drum, 450kgs/Pallet.
Unparalleled Color Performance and Versatility
Solvent Yellow 160:1 is a high-performance greenish-yellow fluorescent dye known for its superior tinting strength and adaptability across a wide range of materials. Its vibrant fluorescence makes it perfect for applications where visual appeal and functionality converge. With its advanced formulation, this dye ensures high-quality results even in demanding conditions.
Outstanding Heat and Light Resistance
Engineered to withstand challenging environments, Solvent Yellow 160:1 boasts excellent heat and light resistance, ensuring long-lasting results for various industrial and commercial purposes. This ensures the dye remains stable and effective, even under prolonged exposure to high temperatures or intense light, making it an ideal solution for products requiring durability and reliability.
Ideal Compatibility and Wide Application
Solvent Yellow 160:1 is highly versatile and suitable for use across a broad spectrum of materials, including PS (Polystyrene), HIPS (High Impact PolyStyrene), ABS (Acrylonitrile Butadiene Styrene), PC (Polycarbonate), PMMA (Polymethyl Methacrylate), SAN (Styrene-Acrylonitrile Resin), AS (Acrylate Styrene), PET (Polyethylene Terephthalate), and polyester fibers. Its compatibility extends even to limited usage in PA6 fibers, ensuring flexibility in design and production.
Enhanced Migration Resistance
Featuring advanced migration resistance properties, Solvent Yellow 160:1 minimizes the risk of material discoloration or shifting, enabling seamless application in high-demand projects. Its stable formula ensures consistency and precision in finished products, enhancing overall quality and customer satisfaction.
Why Choose Honor Pigments?
- 🌍 Global Export Expertise — Trusted by customers in 40+ countries for consistent quality and reliable supply
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- 🧪 Technical Support — Free color matching, formulation advice and sample testing before bulk order
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