Sulfur Red
Sulfur Red Premium Pigment
Sulfur Red is a high-performance inorganic pigment with outstanding color strength and durability. Developed for industrial applications, our Sulfur Red offers superior lightfastness, weather resistance, and chemical stability.
Product Specifications
- Color Index: Pigment Red 88
- Chemical Composition: Cadmium sulfoselenide
- Appearance: Bright red powder
- Density: 4.5 g/cm³
- Oil Absorption: 18-22 g/100g
- Particle Size: 0.3-0.8 μm
- Heat Resistance: Up to 400°C
| Property | Value | Test Method |
|---|---|---|
| Lightfastness | 8 (ISO 105-B02) | Blue Wool Scale |
| Weather Resistance | 5 (ISO 11341) | Xenon Arc |
| Chemical Resistance | Excellent | ASTM D1308 |
| pH Value | 6.5-7.5 | ISO 787-9 |
FAQ Section
What industries commonly use Sulfur Red?
Sulfur Red is widely used in plastics, coatings, ceramics, and printing inks industries. Its excellent thermal stability makes it particularly suitable for engineering plastics that require high-temperature processing. The pigment also finds applications in automotive coatings, outdoor signage, and technical ceramics where color permanence is critical.
How does Sulfur Red compare with organic red pigments?
Unlike organic red pigments, Sulfur Red offers superior heat resistance and much better lightfastness. While organic pigments typically fade within 1-2 years of outdoor exposure, Sulfur Red maintains its color intensity for 5-7 years. The inorganic nature of Sulfur Red also provides better chemical resistance to acids, alkalis, and solvents compared to organic alternatives.
Technical Performance Data
| Application | Recommended Loading | Color Strength | Processing Temp. |
|---|---|---|---|
| PVC | 0.5-2.0% | 100% | 180-200°C |
| Polyolefins | 0.3-1.5% | 95-98% | 220-280°C |
| Industrial Coatings | 5-15% | 105-110% | N/A |
Is Sulfur Red safe for food contact applications?
Sulfur Red meets FDA requirements for indirect food contact applications under certain conditions (21 CFR 178.3297). However, specific migration limits apply depending on the food type and contact conditions. We recommend consulting regulatory guidelines for each application. The pigment is not approved for direct food contact or pharmaceutical applications due to its cadmium content.
Handling and Storage
- Store in cool, dry conditions away from direct sunlight
- Keep containers tightly sealed when not in use
- Recommended shelf life: 24 months from production date
- Use appropriate personal protective equipment when handling
- Avoid creating dust during transfer and processing
Global Compliance
| Regulation | Status | Restriction |
|---|---|---|
| REACH | Registered | Authorization required |
| RoHS | Exempt | Cadmium content 0.01% |
| Prop 65 | Labeling required | California only |