UV-328

Base Information

• Chemical Name: UV-328
• CAS No.: 25973-55-1
• Deprecated CAS: 102257-30-7,104817-16-5,131242-53-0,134018-57-8,153613-73-1,186805-09-4,188025-36-7,189377-89-7,3142-41-4,42558-99-6,51829-45-9,70419-42-0,98354-04-2,796971-88-5,909728-30-9,850346-35-9,1244977-94-3,1391942-68-9,855281-45-7,1449275-36-8,1492588-58-5,2098648-58-7,2135719-12-7,104817-16-5,1244977-94-3,131242-53-0,134018-57-8,1391942-68-9,153613-73-1,186805-09-4,188025-36-7,189377-89-7,3142-41-4,42558-99-6,51829-45-9,70419-42-0,796971-88-5,850346-35-9,855281-45-7,909728-30-9,98354-04-2
• Molecular Formula: C22H29N3O
• Molecular Weight: 351.492
• Hs Code.: 2933990090
• European Community (EC) Number: 247-384-8
• UNII: VN99CPK4TI
• DSSTox Substance ID: DTXSID2027886
• Nikkaji Number: J256.566H
• Wikipedia: UV-328
• ChEMBL ID: CHEMBL1879803
• Mol file: 25973-55-1.mol

Synonyms:2-(2H-Benzotriazol-2-yl)-4,6-di-tert-pentylphenol;UV-328;UV328

Chemical Property of UV-328

Chemical Property:

• Appearance/Colour: Slightly yellowish powder
• Vapor Pressure: 2.01E-09mmHg at 25°C
• Melting Point: 80-83 °C
• Refractive Index: 1.575
• Boiling Point: 469.1 °C at 760 mmHg
• PKA: 8.85±0.50(Predicted)
• Flash Point: 237.5 °C
• PSA: 50.94000
• Density: 1.08 g/cm³
• LogP: 5.50130
• Storage Temp.: -20°C Freezer
• Solubility.: DMSO (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly, Sonicated)
• XLogP3: 7.4
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 5
• Exact Mass: 351.231062557
• Heavy Atom Count: 26
• Complexity: 464

Purity/Quality:

99% ^*data from raw suppliers

2-(2H-Benzotriazol-2-yl)-4,6-di-tert-pentylphenol ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi,Xn
• Statements: 36/37/38-53-48/22
• Safety Statements: 26-36-61-22-53

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Nitrogen Compounds -> Triazoles
• Canonical SMILES: CCC(C)(C)C1=CC(=C(C(=C1)N2N=C3C=CC=CC3=N2)O)C(C)(C)CC
• Description: UV-328 (2-(2H-Benzotriazol-2-yl)-4,6-ditertpentylphenol) is a chemical compound that belongs to the phenolic benzotriazoles. It is a UV filter that is used as an antioxidant for plastics.
• Uses: 2-(2H-Benzotriazol-2-yl)-4,6-di-tert-pentylphenol is an ultraviolet light absorber (UVA) of the hydroxyphenylbenzotriazole class, which imparts outstanding light stability to plastics and other organic substrates. UV-328 is a class of benzotriazole derivatives that can potentially be used as corrosion inhibitors in heat resistant fluids in aircraft, brake fluids in automobiles and for other industrial cooling systems.

Technology Process of UV-328

There total 15 articles about UV-328 which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 99.0%

aqueous hypophosphorous acid + 2-Nitro-2'-hydroxy-3',5'-di-tert-pentyl-azobenzene (52184-19-7) → tinuvin 328 (25973-55-1)

Guidance literature:

With hydrogenchloride; hydrogen; tert-butylamine; In methanol;

Reference yield: 98.29%

C22H29N3O2 → tinuvin 328 (25973-55-1)

Guidance literature:

In isopropyl alcohol; at 83 - 85 ℃; for 3h; Temperature;

Reference yield: 96.4%

2,4-bis(1,1-dimethylpropyl)-6-(2'-nitrophenylazo)phenol (52184-19-7) → tinuvin 328 (25973-55-1)

Guidance literature:

With borane-ammonia complex; In toluene; at 50 ℃; for 5h;

upstream raw materials:

2,4-bis(1,1-dimethylpropyl)-6-(2'-nitrophenylazo)phenol

2-(2'H-benzotriazol-2'-yl)-4,6-bis(1,1-dimethylpropyl)phenol 1'-oxide

2,4-Bis-(1,1-dimethyl-propyl)-6-(2-nitro-phenylazo)-phenol

2-Nitro-2'-hydroxy-3',5'-di-tert-pentyl-azobenzene

Downstream raw materials:

[Al(O(p-C₆H₄Ph))(2-(2H-benzo[d][1,2,3]triazol-2-yl)-4,6-di-tert-pentylphenol(-1H))2]

2-(2-Hydroxyphenyl)-2H-benzotriazole

Refernces

• 1、 -. "Preparation method of ultraviolet absorber UV-328". Paragraph 0031; 0037. . Retrieved 2019/10/01.
• 2、 -. "Method to prepare benzotriazole ultraviolet-absorbing agent via catalytic hydrogen process". . . Retrieved 2018/07/15.