Pigment Red 21 for Color Masterbatch, Ink, Colorful Pencils

• Customization: Available
• CAS NO.: 1048-96-0
• Formula: C16h11n3o3
• Model NO.: Pigment Red 21
• EINECS: 213-888-6
• Colour: Red
• Appearance: Powder
• Usage: Ink, Plastic, Paint, Textile, Paper, Leather, Photoelectric Communication, Ceramic, Cosmetic, Color Masterbatch
• Application Material: Coloring for Plastics, Inks, Coatings, Masterbatch
• Type: Synthetic
• Composition: Monoazo
• Solubility: Solubility
• Name: Pigment Red 21
• Light Fastness: 6
• Heat Resistance: 200℃ Max
• Water Resistance: 5
• Oil Resistance: 2
• Acid Resistance: 3-4
• Alkali Resistance: 3-4
• Alcohol Resistance: 4
• Transport Package: 25kg/Bag
• Specification: high purity
• Trademark: Ruicai
• Origin: China
• HS Code: 3204170090
• Production Capacity: 10000mt/Year
• Package Size: 110.00cm * 41.00cm * 150.00cm
• Package Gross Weight: 25.000kg

Product Description

Product Description

Pigment Red 21 is a classic azo organic pigment with bright medium-red hue, widely used in plastics, inks, and coatings. It offers strong coloring ability, good dispersion, and moderate heat/light resistance.

Key Features:

    •    Brilliant and stable red tone;
    •    Excellent dispersion performance;
    •    Moderate light & heat resistance for indoor/short-term outdoor use;
    •    Broad compatibility with PE, PP, PVC, water-based systems;
    •    Environmentally friendly, heavy metal-free, RoHS compliant.

Applications:

    •    Plastic coloring (injection, film blowing, masterbatch)
    •    Ink formulations (gravure, flexo, water-based inks)
    •    Paints, emulsions, latex coatings
    •    Rubber, synthetic leather, textile printing paste

Technical Data Table
 

Appearance	Red Powder
Tinting Strength	100±5%
Heat Resistance	180~200°C
Dispersibility	Good
Light Fastness	Grade 5
Solubility	Insoluble in Water
Heavy Metals	Compliant with environmental standards
Oil Absorption	45-55 g/100g

Packaging & Transportation

    •    Standard packaging is 25kg kraft paper bag with inner moisture-proof liner
    •    Avoid strong impact and direct sunlight during transport
    •    Store in ventilated and dry conditions

Safety & Environmental Protection

    •    Non-toxic and harmless under standard usage conditions
    •    Fully compliant with REACH, ROHS, and related environmental regulations
    •    Suitable for children's toys and food-contact applications

Certificate

Company Introduction

After-service

1. According to the requirements of customers, we choose the safest and most cost-effective mode of transportation for customers
2. Tracking goods until the goods are safely delivered to customers
3. 24hours online, we will provide technical support to solve the problems for customers.
 

Packaging & Shipping

 

Packing: Outer paper bag packing, inner plastic bag.
                  25kg pigments / bag
Lead time: Within 7 workdays after receiving customers'                            payment
Payment term: 30%TT In advance, the 70% will be paid against the copy bill of lading 

Our products advantages

1. High concentration of pigment
2. Excellent dispersion, good heat-resistance, high color fastness, stable performance and bright color
3. Non-toxic, environmental-friendly industry