Shandong Zhongyang Chemical Co., Ltd.
Pigment red 2
Classification :
PRODUCT DETAILS
Pigment Red 2 (PR2)
Synonyms: Fast Scarlet B, Fast Scarlet F2R, C.I. 12310
C.I. Number: 12310
CAS Number: 6041-94-7
EINECS Number: 227-930-1
Basic Information
Chemical Class: Monoazo organic pigment (Azo-S series, 2,5-dichlorophenylazo-naphthalene-2-carboxylic acid anilide)
Molecular Formula: C₂₃H₁₅Cl₂N₃O₂
Molecular Weight: 436.29
Appearance: Bright red to dark red powder, neutral with a slight yellowish-red tint
Hue: Standard neutral red; yellowish tint slightly more pronounced than PR112; high saturation
Physical and Chemical Properties
Melting Point: 310–311°C
Relative Density: 1.38 g/cm³
Average Particle Size: Larger particles; lower transparency than PR112
Specific Surface Area: Approx. 20–40 m²/g (standard grade)
Oil Absorption: 35–50 g/100 g (varies slightly depending on particle size and crystal form)
pH (10% aqueous suspension): Slightly alkaline
Solubility: Insoluble in water; slightly soluble in organic solvents such as ethanol and toluene; turns red in concentrated sulfuric acid and forms a red precipitate upon dilution
Chemical stability: Good acid and alkali resistance (Grade 4–5); excellent compatibility with most resin systems
Performance Characteristics
Tinting strength: High, but slightly lower than PR112
Lightfastness: Good, standard shade depth approximately 5–6; moderate outdoor durability, weaker than PR112
Heat resistance: Stable; withstands 180–200°C during routine processing, and up to 220°C for short periods
Solvent Resistance / Migration Resistance: Moderate solvent resistance; prone to migration in soft PVC; better suitability for rigid PVC, PP, and PE
Opacity / Transparency: High opacity; outstanding opacity; suitable for coloring applications requiring strong coverage
Dispersibility: Excellent; easily dispersible in solvent-based, water-based, and powder coating systems; good flow properties
Main Applications
Inks: Primary application; offset inks, packaging gravure inks, solvent-based inks, and water-based inks; color stability and strong tinting strength make it suitable for labels, paper boxes, flexible packaging, and similar applications
Coatings: Industrial coatings, wood finishes, interior latex paints, and powder coatings; high opacity enhances color rendering, and heat resistance is suitable for standard baking processes
Plastics: Coloring of general-purpose plastics such as PP, PE, rigid PVC, ABS, and PS; use with caution on flexible PVC (migration risk)
Textile Printing and Dyeing: Cotton fabrics, viscose fiber pulp, and dye pastes for coating printing; colorfastness meets standard printing and dyeing requirements
Other: Stationery and educational supplies (watercolors, oil paints), rubber, leather, latex products, soap, etc.
Factory Description
Equipped with advanced equipment and precise detection technology, and supported by sufficient capital, the company provides customers with high-quality optical brighteners and pigment products, and customizes exclusive product solutions according to customer needs. Covering an area of more than 2,000 mu, the company has built a number of standardized production workshops and professional laboratories. Based on complete experimental facilities, it can provide customers with accurate application data support, and ensure stable goods supply with large-scale production capacity.
Our Advantages
1. With our own manufacturing facilities, R&D center, and laboratories, we ensure consistent and reliable quality for products including optical brightening agents, titanium dioxide, solvent dyes, and pigments.
2. We provide OBA products and comprehensive whitening solutions with full technical support throughout the process.
3. Factory direct sales offer prices 3%-5% lower than market rates.
4. Rapid delivery with same-day shipping available.
5. Custom packaging options for optical brighteners, titanium dioxide, solvent dyes, pigments, and more based on client requirements.
6. Complimentary samples provided for testing comparative effects and cost-effectiveness.
7. Prompt response to inquiries with professional and efficient service.
8. Flexible payment options including TT, LC, and other settlement methods.
9. Complete customs clearance documentation backed by years of export experience.
10. DDP door-to-door service with real-time tracking of logistics updates.
Package information
Standard packaging is 25 kg in cardboard drums, cartons, or bags lined with double-layer PE film. Customized packaging is also available upon customer request.
Transportation and storage
Transportation: Fluorescent whitening agents should be protected from impact and direct sunlight during transportation.
Storage: Store in a cool, dry, and well-ventilated warehouse. Shelf life is two years.
FAQ
Q: Are your products suitable for use in synthetic fibers, plastics, detergents, coatings, inks, textiles, and paper?
Q: How about after-sales service?
Q: What documents can you provide?
Q: Can you ship to Southeast Asia and Africa?
Q: Which ports do you ship from?
Q: How long is the lead time?
Q: What payment terms do you accept？
Q: What is your standard packaging?
Q: Can you provide samples?
Q: What is your MOQ?
Q: Are prices negotiable?
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Qihe Economic Development Zone (Industrial Park), Shandong Province