Products Description
The substance corresponding to CAS 5280-66-0 is Pigment Red 48:4, also known as 2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-. Its molecular formula is C₁₈H₁₃ClN₂O₆S, and its molecular weight is 420.824.
Pigment Red 48:4 appears as a red powder and has a blue-red hue. Its relative density ranges from 1.33 to 1.7 g/cm³, its bulk density is between 12.6 and 18.3 lb/gal, and its melting point is higher than 300°C. The average particle size is 0.09 - 0.12 μm, the particle shape is in the form of small flakes, the specific surface area is 32 - 75 m²/g, the pH value (10% slurry) is between 6.0 and 8.5, the oil absorption is 29 - 53 g/100g, and it has opaque hiding power.

![CAS:5280-66-0 | 2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy- CAS:5280-66-0 | 2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-](/uploads/40900/products/p20250303100342a72b2.jpg?size=750x0)
Basic Info
| Product Name | Pigment Red 48:4 Technical grade for paint CAS 5280-66-0 |
| CAS | 5280-66-0 |
| EINECS | 226-102-7 |
| Chemical Formula | C₁₈H₁₁ClMnN₂O₆S |
| Molecular Weight | 473.74 |
| Density | 1.7 g/cm³ [at 20℃] |
| Boiling Point | 649.9°C at 760 mmHg |
| Flash Point | 346.8°C |
| Water Solubility | 42mg/L at 23℃ |
| Vapor Pressure | 8.97E-17mmHg at 25°C |
Uses
Coating Field: Pigment Red 48:4 Technical grade can be used to color various coatings, such as latex paint and oil-based paint. It can give the coating a vivid red hue, enhancing its decorative and aesthetic qualities. It is widely used to coat the interior and exterior walls of buildings, furniture, and metal products.
Ink Field: It is a commonly used colorant in ink production, suitable for different ink systems including offset ink, gravure ink, and flexographic ink. It enables printed products to show clear and vivid red images and texts. It is frequently used in the printing of books, newspapers, packaging materials, etc.
Plastic Field: It can be used to color plastics like polyvinyl chloride (PVC), polystyrene (PS), and polypropylene (PP). It imparts a lasting red color to plastic products and is utilized in the manufacturing of plastic pipes, films, toys, and daily necessities.
Safety Information
- Pigment Red 48:4 generally does not cause obvious danger, but it still needs to be used correctly and pay attention to the following matters:
- Avoid inhalation and contact with skin. Personal protective equipment such as protective gloves, headgear and respirator can be used.
- Avoid Pigment Red 48:4 from entering the eyes. If it accidentally enters, rinse with clean water immediately and seek medical assistance.
- Comply with relevant safety operating procedures and storage requirements.
- Follow the guidelines on waste disposal and environmental protection.

Company Profile
TIANJIN GNEE BIOTECH CO., LTD. is an enterprise specialising in the research, development, production and sales of phytochemicals and fine chemicals.Our factory was established in 2021 and is located in Henan Province, covering an area of 3,600 square metres. We have a professional, well-equipped and high-quality R&D team with more than 10 years of R&D experience. Our products are widely exported to many countries, such as the United States, Kazakhstan, Canada, Australia, Europe, etc., and we provide customers with fast shipping services. We hope to establish long-term and mutually beneficial cooperation with more friends in the future, and provide the best products and services for our customers.
Contact Us
Tel: +86-372-5055135
Mob: +86-13673325456
Email: wendy@gneebio.com


![2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy- 2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-](/uploads/40900/products/p20250228094746c462b.jpg?size=800x0)

FAQ
Can your company accept customisation and meet customers' special specifications?
Yes, we can.
What are your payment terms?
Wire transfer, paypal, western union, money order and bitcoin.
What is your delivery time?
We usually ship within 1-3 days after receiving your payment.
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![2-Naphthalenecarboxylic acid, 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy- Technical Grade For Paint CAS 5280-66-0](/uploads/40900/pigment-red-48-4-for-plastics-and-rubber-cas25867.jpg)



