2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene CAS:7128-64-5

Properties of 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene

Melting point: 199-201°C (lit.)
Boiling point: 531.2±45.0°C (Predicted)
Density: 1.26
Refractive index: 1.6360 (estimated)
Flash point: >350°C
Storage conditions: Keepin darkplace, Sealedindry, Room Temperature
Solubility: Soluble in toluene: 50 mg/mL
Acidity coefficient (pKa): 3.03±0.10 ( (Predicted) Form: Powder Color: Pale green to yellow Appearance: Pale green to yellow solid Water Solubility: Soluble in acetone and toluene. Insoluble in water. ε (Extinction Coefficient): ≥47000 at 372-374 nm (dioxane) Maximum Wavelength (λmax): 373 nm (EtOH) (lit.) Merck 14, 1014 BRN 631803 Stability: Stable. Incompatible with strong oxidizing agents.

Cosmetic Ingredients and Efficacy SKINCONDITIONING-MISCELLANEOUSInChIKeyAIXZBGVLNVRQSS-UHFFFAOYSA-NLogP8.6at25℃

CAS Database 7128-64-5 (CASDataBaseReference)NIST

Chemical Information Benzoxazole, 2,2-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-(7128-64-5)

EPA Chemical Information 2,2-(2,5-Thiophenediyl)bis[5-tert-butylbenzoxazole](7128-64-5)

2,5-Bis(5-tert-butyl-2-benzoxazole)thiophene Uses and Synthesis Methods

Chemical Properties This product is a yellow-green powder. Melting point 200～201℃, decomposition temperature greater than 220℃. Slightly soluble in water, soluble in alkanes, fats, mineral oils, waxes and common organic solvents. Solubility (g/100ml): Methanol 0.05; Acetone 0.5; Toluene 5.3; Carbon tetrachloride 5.9; Tetrahydrofuran 5.5; DMF 0.8; Chlorobenzene 10.2; Cyclohexane 3.3; Xylene 5.5; Dioctyl phthalate 0.7; Water 0.01. Maximum absorption wavelength: 374nm.

Uses: This product is used for whitening polyvinyl chloride, polystyrene, ABS resin, polyolefins, and polyesters. It is also used for whitening cellulose acetate, polymethyl methacrylate, and foamed artificial leather. It is also used in varnishes, paints, UV-cured coatings, printing inks, fats, oils, and packaging materials. In printing inks, it can be used as an anti-counterfeiting mark. In photography, it can be used to improve the whiteness of non-image areas of photographs and can cause photographs to fluoresce when exposed to ultraviolet light, producing a whitening and brightening effect.

Applications
Mainly used for whitening PVC, PS, PE, PP, ABS and other plastics, as well as cellulose acetate, paints, coatings, inks, etc.

Mainly used for whitening synthetic fibers and plastic products. It has a significant effect on increasing the brightness of colored plastic products. It is also used in PE, PP, PVC, PS, ABS and other applications. Biochemical research applications include liquid scintillation counting reactants such as 2,2-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-Benzoxazole].