2-(2H-Benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H413：Kann für Wasserorganismen schädlich sein, mit langfristiger Wirkung.

• Sicherheit

  P273：Freisetzung in die Umwelt vermeiden.

  P501：Inhalt/Behälter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

UV-329 Chemische Eigenschaften,Einsatz,Produktion Methoden

• R-Sätze Betriebsanweisung:

  R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

• S-Sätze Betriebsanweisung:

  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
  S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.

• Beschreibung

  The ultraviolet absorber UV-329 is a highly effective anti-aging additive with excellent performance. It is soluble in benzene, styrene Chemicalbook, dichloromethane and cyclohexane, slightly soluble in alcohols, insoluble in water; it can effectively absorb 270- 380 nanometer ultraviolet light; non-flammable, non-explosive, non-toxic, safe and harmless to use.
  

• Verwenden

  Ultraviolet screen.

• Verwenden

  UV absorber

• Definition

  An UV light absorber.

• Flammability and Explosibility

  Not classified

• Synthese

  Step 1: add homemade 2-nitro-2′-hydroxy-5′-tert-octyl azobenzene (97.8%), 36.3 g (0.1021 mol), 10 g of sodium hydroxide, 250 ml of methanol and 50 ml of water to a 500 ml four-necked flask, control the reaction temperature at 64 ?? and slowly add the reductant prepared according to Example 1 6.34 g, reflux reaction for 2 hours, the solution becomes light yellow is the end point of the reaction;

  Step 2: slowly add 30% hydrochloric acid dropwise, neutralize the reaction solution PH is 6, produce a large number of yellow precipitate, filtration, respectively, washed twice with 50 ml of water, drying, to obtain the intermediate 2-(2 & prime;-hydroxy-5′-tert-octylphenyl)benzotriazole nitrogen oxides 31.6g, the yield was 93.2%;

  Step 3: Take the 2-(2′-hydroxy-5′-tert-octylphenyl)benzotriazole nitrogen oxide 31.6 g (0.0977 mol) obtained from the previous step, 20 ml of 98% sulfuric acid, 120 ml of toluene and 60 ml of water, add it to 500 ml of four-necked flask, and control the reaction temperature at 64 ?? and slowly add the Reducing agent 5.79 g, reflux reaction for 2 hours, the solution becomes light yellow-green is the end point of the reaction;

  Step 4: the solution is first filtered to remove insoluble material, the filtrate is poured into 100 ml of water, cooling crystallization, filtration, respectively, washed twice with 50 ml of water, drying, to obtain the product ultraviolet absorber UV-32927.8g, yield of 86.1%, melting point of 103-105 ??.

UV-329 Upstream-Materialien And Downstream Produkte

2-(2H-Benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global(482)Suppliers

3147-75-9, UV-329 Verwandte Suche: