Contains no toxic ingredients
As an innovative company, we offer a range of high-value new products and technologies, including Trigonox® 421, the latest generation of organic peroxides for acrylic resin polymerization and the production of polymer polyols. Polymer polyols are used in foams for interior furnishings and bedding.
Trigonox® 421 is an eco-friendly peroxide initiator that serves as an alternative to traditional azo initiators.
• TMSN-free •
No toxic decomposition products
• Direct substitute for AIBN and
AMBN • Liquid formulation for easy metering and dosing
A New Alternative to Azo Compounds
AIBN (azodibutyronitrile) is used in many polymerization processes. Upon decomposition, it forms toxic tetramethylbutanedinitrile (TMSN). To address this issue, Nouryon developed Trigonox® 421, making TMSN a thing of the past.
Approximately 4,000 metric tons of TMSN are produced annually through the decomposition of AIBN: azo initiators—specifically AIBN—are used because of their unique properties.Upon decomposition, it produces 100% selective C-centered radicals. Compared to the aggressive O-centered radicals typically formed by organic peroxides, these C-centered radicals allow for better control of molecular weight. This is primarily due to the lower level of branching produced. This is particularly important for applications involving high-solids acrylic resins and polymeric polyols.
In contrast to AIBN (azodibutyronitrile), 1,1,3,3-tetramethylbutyl 2-ethylhexyl peroxide (Trigonox® 421) does not produce any toxic byproducts: unlike most other peroxides, Trigonox® 421 generates almost exclusively selective C-radicals upon decomposition.Therefore, like AIBN, it is particularly well-suited for applications where controlling branching and molecular weight is of critical importance. At the same time, Trigonox® 421 has already replaced AIBN in many commercial applications, proving the above concept in practice.
Another advantage of Trigonox® 421 is that it is liquid. Consequently, feeding it into industrial batch and continuous processes is much easier.
In summary:
• Trigonox® 421 is an alternative to AIBN
• Trigonox® 421 does not produce toxic decomposition products
• Trigonox® 421 is a liquid, making it easy to meter and feed.
- Product Name: Trigonox 421
- Chemical Name: 1,1,3,3-Tetramethylbutyl peroxy-2-ethylhexanoate
- Suitable for autoclave and tubular polymerization processes
- Typically used in combination with other peroxides or oxides
- Used in styrene polymerization
- Also used in suspension polymerization and copolymerization of acrylic and methacrylic acids, as well as in coatings production
- CAS Number: 22288-43-3
- EINECS/ELINCS Number: 244-894-2
- Molecular Weight: 272.4
- Active Oxygen Content: 5.87%
- Specification: Reactive Oxygen Content ≥ 5.29%
- Appearance: Clear liquid
- Content: ≥90.0%
- Color: 50 Pt-Co / APHA max.
- Hydrogen peroxide content: ≤0.25 mg/kg
- Inorganic + Organic Hydrolyzable Chlorine Content: ≤250 mg/kg
- Density (0°C): 0.914 g/cm³
- Viscosity (0°C): 9.3 mPa·s
- Half-life at different temperatures:
- 109°C (0.1 hour)
- 88°C (1 hour)
- 69°C (10 hours)
- Related Formulas and Values
- Organic peroxides are thermally unstable and may undergo self-accelerating decomposition
- Self-accelerating decomposition temperature (SADT): 30°C
- Emergency temperature (Tₑ): 20°C
- Control Temperature (Tc): 15°C
- Method: Thermal accumulation storage test
- Recommended maximum storage temperature: 5°C
- Minimum temperature: -20°C (to prevent crystallization)
- Standard packaging is a 30-liter HDPE drum
- Classified as Organic Peroxide Class D, liquid, temperature-controlled, Division 5.2
- UN 3113
- Keep container tightly closed and away from heat, ignition sources, and sunlight
- Avoid weighing and repackaging in the storage room
- Avoid contact with reducing agents, acids, bases, and heavy metal compounds
- For detailed information, refer to the Safety Data Sheet (SDS)
- Carbon dioxide, 2,2-dimethylpropane, acetone, heptane, heptene, 2,4,4-trimethyl-2-pentanol, 2-(1-ethylpentoxy)-2,4,4-trimethylpentane
- All information and recommendations are provided in good faith without warranty
- Users must determine the suitability of the product on their own
- This information supersedes any previously published information