Antioxidant NG-2246 CAS 119-47-1

Download TDS

CAS:119-47-1

Molecular Formula:C23H32O2

Molecular Weight:340.5

EINECS:204-327-1

Antioxidant NG-2246, with CAS No 119-47-1, is a high-efficiency, non-staining phenolic antioxidant widely used in polymers, elastomers, adhesives, and lubricant formulations. As a sterically hindered bisphenol antioxidant, Antioxidant 2246 provides excellent protection against thermal oxidation and long-term aging, helping manufacturers improve product durability, stability, and performance.

Antioxidant NG-2246 soluble in organic solvents such as benzene and acetone, insoluble in water, with a solubility of higher than 2% in rubber.

As reliable Antioxidant 2246 suppliers, we provide consistent quality and global shipment support.

Item	Specification
Melting point	123-127 °C(lit.)
Boiling point	187℃
Density	1.04g/cm3
Refractive index	1.4480
Flash point	195°C(383°F)
LogP	6.25 at 20℃
Acidity coefficient (pKa)	11.32±0.48(Predicted)

Antioxidant NG-2246, also known as Antioxidant 2246, is a bisphenol-type hindered phenolic antioxidant widely used in rubber, plastics, lubricants, and industrial polymer systems. It is especially valued for its non-staining performance, excellent heat aging resistance, and compatibility with light-colored materials.

1. Light-Colored Rubber Products

Antioxidant NG-2246 is extensively used in natural rubber, SBR, NBR, CR, EPDM, and latex products requiring excellent color retention and anti-aging performance. Unlike amine antioxidants, it does not stain or discolor vulcanized rubber, making it highly suitable for white, bright-colored, and transparent rubber products.

Typical applications include:

Rubber seals
Shoe soles
Medical rubber parts
Conveyor belts
Automotive elastomer components

For enhanced long-term heat resistance in rubber compounding, it can also be combined with sulfur antioxidants such as Dilauryl Thiodipropionate (DLTDP).

2. ABS & Engineering Plastics

In ABS, HIPS, polyacetal, chlorinated polyether, and engineering plastics, NG-2246 helps prevent thermal oxidation during molding and extrusion. It improves color stability and reduces brittleness caused by long-term heat exposure.

The product is particularly useful in light-colored engineering plastics where non-discoloration performance is critical.

3. Adhesives & Pressure-Sensitive Formulations

NG-2246 is commonly used in hot melt adhesives, pressure-sensitive adhesives, and sealants to improve thermal stability during storage and application. Its low volatility helps reduce viscosity drift and oxidative discoloration in adhesive systems.

4. Lubricants & Industrial Oils

The antioxidant is also applied in turbine oils, compressor oils, grease formulations, and synthetic lubricants where high-temperature oxidation resistance is required. It helps minimize sludge formation and viscosity increase during long-term operation.

5. Synthetic Fibers & Specialty Materials

NG-2246 can be used in synthetic fibers, resin modifiers, coating pigments, and specialty polymer formulations requiring low volatility and stable thermal performance.

Discover more polymer stabilization materials on the Unisunchem Home Page and browse the Polymer Additives Collection.

Non-staining and non-discoloring antioxidant for light-colored materials
Excellent resistance to thermal oxidation and heat aging
Strong compatibility with rubber, ABS, PVC, and engineering plastics
Low volatility and excellent permanence in polymer systems
Helps maintain elasticity, impact strength, and surface appearance
Effective in adhesives, lubricants, and elastomer applications
Good resistance to blooming and additive migration
Suitable for white, transparent, and color-sensitive polymer products
Stable industrial supply from Unisunchem

25kg/drum or according to customer requirements.

Q1: Why is Antioxidant NG-2246 preferred for light-colored rubber products?

Unlike many amine antioxidants, NG-2246 is non-staining and non-discoloring. It protects rubber against heat oxidation without causing darkening, which makes it ideal for white, transparent, or brightly colored rubber products.

Q2: What is the difference between NG-2246 and Antioxidant 1010?

Antioxidant 1010 is a high-molecular-weight hindered phenolic antioxidant mainly used for long-term stabilization in plastics, while NG-2246 is a bisphenol antioxidant particularly valued in rubber and light-colored elastomer applications for its non-staining performance.

Q3: Can NG-2246 prevent rubber blooming?

Yes. NG-2246 has relatively low volatility and good compatibility with elastomers, which helps reduce blooming and surface migration in many rubber formulations.

Q4: Is Antioxidant NG-2246 suitable for ABS resin?

Yes. NG-2246 is widely used in ABS and impact-resistant plastics because it improves thermal stability, reduces yellowing, and helps maintain mechanical properties during processing.

Q5: Why is NG-2246 used together with thioester antioxidants?

NG-2246 is often combined with sulfur-containing antioxidants such as DLTDP because the combination provides better long-term thermal aging resistance and oxidation stability than using either antioxidant alone.