How does UV absorber work?

How does UV absorber work?

UV absorbers, work by targeting the incident radiation before it prevents any initial degradation. The absorb the highly energetic UV light and re-emit it at a lower energy state thereby dissipating the energy in a less dangerous form. The most important class of UV absorbers are the hydroxybenzophenones.

Is benzophenone a stabilizer?

1413 Product Information. 1413 is a general purpose benzophenone UV absorber for the light stabilization of polyolefins, PVC, and other plastics.

What is BTA chemical?

Benzotriazole (BTA) is a heterocyclic compound with the chemical formula C6H5N3. It features a five-membered ring containing three nitrogen atoms. This white to light tan solid has a variety of uses, for instance, as a corrosion inhibitor for copper. Benzotriazole. Names.

Where is benzotriazole used?

Benzotriazole is a specific corrosion inhibitor for copper and copper alloys. It is now widely used in industry to reduce the corrosion of these alloys under both atmospheric and immersed conditions.

What is UV stabilization?

UV stabilization is a process in which special compounds that are potent guards against UV radiation are employed. Consequently, they protect polymer products from photodegradation.

What is a UV inhibitor?

UV inhibitor helps protect candles from the damaging effects of exposure to UV (ultraviolet) light and extend the color of candles. A must for those selling candles outdoors where candles are exposed to sunlight or in stores where candles have prolonged light exposure.

What is UV stabilized?

What is BTA coating?

BTA is a corrosion inhibitor of high purity for copper, copper alloys, and yellow metal protection. Benzotriazole works by creating a complex between copper and benzotriazole which functions as a passivation layer to protect the metal from corrosion.

What is sodium Tolyltriazole?

Sodium Tolyltriazole or Mid South TT50S, is a copper corrosion inhibitor designed for use in open cooling tower and closed recirculating systems to inhibit corrosion on copper, copper alloys, and other metals.

How is benzotriazole made?

Benzotriazole is a bicyclic nitrogen heterocycle formed by the fusion of the benzene ring with the 4,5-positions or the “d” site of 1H-1,2,3-triazole.

What is a UV additive?

UV stabilization additives are chemical compounds that are added to combat the deterioration of the plastic and significantly extend the life span of the final product. UV stabilizers are added at very low levels, often 0.1 – 0.5% of the polymer.

What are UV stabilizers?

UV stabilizers are substances that are used to prevent a chemical process referred to as “photo degradation” which occurs when ultraviolet radiation coming from an artificial light source or the Sun collapses chemical bonds within a polymer.

How do you make Tolyltriazole?

Tolyltriazole is manufactured by reacting o-toluenediamine with sodium nitrite and hydrochloric acid. The crude material is then distilled under reduced pressue to give a white solid. This material is sold as such or as an aqueous solution.

Is benzotriazole water soluble?

Solubility: 1) Water: 1-5 g/l (at 23.7°C). Soluble in alcohol, benzene, toluene, chloroform, and dimethylformamide. 2) Water: <0.1 g/l (at 18°C).

What is the role of sodium nitrite in synthesis of benzotriazole?

BACKGROUND. Principle: Benzotriazole can be prepared by treating o-phenylenediamine with nitrous acid (liberated during the reaction between sodium nitrite and acetic acid) to form mono-diazonium salt that follows spontaneous intramolecular cyclization reaction to produce benzotriazole.

What is UV additive?

How do you dissolve benzotriazole in water?

1-2-3-benzotriazole is soluble in alcohol, benzene, toluene, chloroform, dimethylformamide, and most organic solvents. However, it is slightly soluble in water, soluble in hot water, and easily soluble in alkaline aqueous solutions.

Is benzotriazole soluble in water?