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Ethylhexyl Triazone(Uvt 150),CAS 88122-99-0, Molecular formula C48H66N6O6, colorless and odorless white powder. It is an efficient UV-B filter with an extremely high absorption rate of over 1500 at 314 nm. Due to its high A1/1 value, only a small concentration is needed to achieve a high SPF value in cosmetic sunscreen formulations. The recommended concentration is up to 3%. In addition, the polarity of the product gives it a good affinity with skin keratin, making the formula for using this product particularly waterproof. Due to its complete insolubility in water, this characteristic is further enhanced.
Due to supersaturation, ethylhexyl triazine ketone crystallizes after prolonged storage. Has excellent photostability. Even when exposed to strong radiation, it actually remains unchanged. Usually dissolved in the oil phase of lotion, it can be very good for cosmetics. This substance (UV absorber UVT-150) is the most oil soluble absorber with the strongest UV-B absorption ability, strong photostability, strong water resistance, and good affinity for keratin proteins in the skin. It is a new type of ultraviolet absorber developed in recent years, which has a large molecular structure and high ultraviolet absorption efficiency. It has a broad-spectrum sunscreen effect, protecting against both UVB and UVA ultraviolet rays, and can be used as an additive in sunscreen products.
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Chemical Formula |
C48H66N6O6 |
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Exact Mass |
823 |
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Molecular Weight |
823 |
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m/z |
823 (100.0%), 824 (51.9%), 825 (13.2%), 824 (2.2%), 826 (1.4%), 825 (1.2%), 825 (1.2%) |
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Elemental Analysis |
C, 70.04; H, 8.08; N, 10.21; O, 11.66 |
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Core Application in Sunscreen Products
High-Efficiency UV Absorption and Protection
Ethylhexyl Triazone is an efficient UV absorber, particularly showing outstanding absorption ability in the UV-B band (280-320nm). Its maximum absorption peak is located around 314nm, and the absorption rate at this wavelength exceeds 1500. It is one of the most UV-B absorbing oil-soluble absorbers known so far. This characteristic makes it a key component in sunscreen formulations, significantly enhancing the SPF (Sun Protection Factor) value of the product. Studies have shown that in cosmetic sunscreen preparations, only a small amount (usually no more than 3%) of Ethylhexyl Triazone needs to be added to achieve a high SPF value, effectively blocking UV-B from causing skin damage and preventing acute photodamage reactions such as sunburn and redness.
Broad-spectrum sun protection effect
In addition to its strong UV-B absorption capacity, Ethylhexyl Triazone also has a certain UVA (320-400nm) absorption ability. It can work in synergy with other UVA absorbers (such as avobenzone, titanium dioxide, etc.) to achieve a broad-spectrum sun protection effect. This dual protection mechanism can more comprehensively protect the skin from the damage caused by ultraviolet rays, reduce the generation of free radicals induced by ultraviolet rays, and lower the long-term risks such as skin cancer and photoaging.
Enhancing product stability and durability
Ethylhexyl Triazone exhibits excellent photostability, maintaining its chemical structure stable even under intense ultraviolet radiation and resisting decomposition and failure. This characteristic enables it to maintain a long-lasting sunscreen effect in sunscreen products, reducing the frequency of reapplication and enhancing the user experience. Additionally, it has strong water resistance and has a good affinity with skin keratin, forming a uniform waterproof film. It can maintain the sunscreen effect even during swimming, sweating, etc., making it suitable for outdoor activities.
Optimizing product texture and skin feel
As an oil-soluble component, Ethylhexyl Triazone can dissolve in the oil phase of the lotion, which helps to improve the texture of sunscreen products, making them easier to apply and absorb. Its low skin penetration property (large molecular weight, difficult to penetrate the skin's stratum corneum) further enhances safety and reduces the risk of ingredients entering the body. Additionally, this component has no odor or color and is suitable for fragrance-free formulations, meeting the needs of different consumers.
Specific Application Cases in Sunscreen Products
Sunscreen Cream and Sunscreen Lotion
Ethylhexyl Triazone is a common component in sunscreen creams and lotions, especially suitable for the development of products with high SPF values. For instance, in the SPF 50+ sunscreen lotion launched by a well-known brand, Ethylhexyl Triazone serves as the main UV-B absorber, combined with avobenzone, octocrylene, and other components, achieving broad-spectrum and high-dose sunscreen effects. This product has a light texture, is easy to apply, and has good water resistance, making it suitable for long outdoor activities.
Sunscreen Spray
In sunscreen spray, Ethylhexyl Triazone also plays a significant role. Its oil-soluble property enables it to be evenly dispersed in the spray formulation, forming a fine mist that can easily cover the skin surface uniformly. In a sunscreen spray launched by a certain sports brand, by optimizing the ratio of Ethylhexyl Triazone to other components, it achieved rapid film formation and long-lasting sun protection effects. Moreover, the spray has a refreshing texture and is not greasy, and is highly favored by consumers.
Sun Protection Function in Makeup Products
As consumers' demand for sun protection has increased, more and more makeup products (such as foundation liquids, primer creams, etc.) have begun to incorporate sunscreen ingredients. Ethylhexyl Triazone, due to its efficient and stable sun protection performance, is widely used in such products. For instance, in a high-end brand's foundation liquid, by adding Ethylhexyl Triazone, an SPF30 sun protection effect was achieved while maintaining the product's light texture and good makeup effect.
Application Exploration in Other Fields
Plastic and Coating Industry
The ultraviolet absorption ability of Ethylhexyl Triazone is not limited to the cosmetics field. It also has potential application value in the plastic and coating industries. Ultraviolet rays are one of the main factors causing the aging of plastics and coatings, which can lead to material discoloration, brittleness, and strength reduction. By adding Ethylhexyl Triazone, ultraviolet rays can be effectively absorbed, reducing their damage to the materials and extending the product's service life. For example, in outdoor plastic furniture and automotive coatings, this component can be used as a light stabilizer to enhance the product's weather resistance.
Textile Industry
In recent years, with the increasing demand from consumers for sun protection textiles, the application of Ethylhexyl Triazone in the textile industry has also attracted attention. By integrating this component onto the surface of the fabric or within the fibers, the textile can acquire sun protection properties, protecting the skin from UV damage. Currently, research has explored the application processes of Ethylhexyl Triazone on cotton, polyester and other fabrics, achieving initial results. In the future, with the continuous advancement of technology, the application prospects of this component in sun protection textiles are broad.
Pharmaceutical intermediates and photosensitive materials
The molecular structure of Ethylhexyl Triazone contains triazine rings and multiple nitrogen atoms, giving it certain chemical reactivity. It can be used as a synthetic raw material for pharmaceutical intermediates or photosensitive materials. For instance, through chemical modification, it can be transformed into compounds with specific biological activity, which can be used in drug research; or by leveraging its photo-sensitive properties, new photosensitive materials can be developed and applied in areas such as photomasking and photocatalysis.
Notes and Challenges in Application
Safety Assessment and Regulatory Compliance
Although Ethylhexyl Triazone has been widely recognized in sunscreen products, its safety still requires continuous attention. Currently, this ingredient is permitted for use in the EU, the US, Japan, and other regions, but the US FDA has not approved its use in sunscreen products. Additionally, studies have shown that long-term use of sunscreen products containing Ethylhexyl Triazone may have an impact on the water environment. Therefore, when using this ingredient, it is necessary to strictly comply with relevant regulatory requirements, conduct thorough safety assessments, and take measures to minimize the environmental impact.
Compatibility and Stability of the Formula
Ethylhexyl Triazone, as an oil-soluble component, needs to be well compatible with other oil-phase components in the formula to ensure the stability of the product. Although its photostability is strong, it may still degrade under certain extreme conditions (such as high temperature, strong acids, and strong bases). Therefore, when designing the formula, various factors need to be considered comprehensively, and appropriate stabilizers and antioxidants should be selected to enhance the overall stability of the product.
Consumer Perception and Acceptance
Although Ethylhexyl Triazone has many advantages, some consumers may have doubts about its name or the source of its ingredients, which may affect their purchasing decisions. Therefore, the brand needs to enhance consumer education by conducting scientific publicity and transparent communication, to increase consumers' awareness and acceptance of this ingredient. For example, through product descriptions, educational articles, etc., information such as the mechanism of action, safety, and environmental friendliness of Ethylhexyl Triazone can be introduced to enhance consumers' confidence.
FAQ
1. What role does Ethylhexyl Triazone play in sunscreen products?
It is an efficient oil-soluble chemical filter for ultraviolet B (UVB) rays, mainly used to absorb ultraviolet rays in the range of 280-320 nm. Its maximum absorption peak is approximately 314 nm, with high absorption efficiency. Only a small amount is needed to help the product achieve a high sun protection factor (SPF value). Additionally, it has significant photostability, remaining stable even under strong ultraviolet radiation, ensuring long-lasting sunscreen effects.
2. How about its safety?
Based on numerous scientific studies, the safety of this component has been confirmed. Firstly, its molecular weight is relatively high (approximately 823 g/mol), making it less likely to be absorbed by the skin, thereby reducing the potential risk of causing skin allergies. Secondly, a peer-reviewed study published in 2025, through multiple in vitro and in vivo evaluations, did not observe that Ethylhexyl Triazone has genetic toxicity or phototoxicity risks, supporting its safety for use in skin care. A safety data sheet (SDS) also classifies it as a non-hazardous substance mixture.
3. Is it widely accepted in the global market?
Yes, it is widely accepted and used in many regions around the world. For instance, it has been approved for use in the European Union, with a maximum allowable concentration of 5%. In China, it is also permitted to be added to sunscreen products, and it can be used as a standard sample for laboratory quality control and quantitative analysis. The US market has not yet approved it as a sunscreen active ingredient, which mainly reflects the differences in regulatory frameworks between different regions rather than any safety concerns.
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