Hexadecyl-3,5-bis-tert-butyl-4-hydroxybenzoat

Bezeichnung:Hexadecyl-3,5-bis-tert-butyl-4-hydroxybenzoat

CAS-Nr67845-93-6

Englisch Name:UV Absorber 2908

CBNumberCB9136391

SummenformelC31H54O3

Molgewicht474.76

MOL-Datei67845-93-6.mol

Synonyma

Hexadecyl-3,5-bis-tert-butyl-4-hydroxybenzoat

Hexadecyl-3,5-bis-tert-butyl-4-hydroxybenzoat physikalisch-chemischer Eigenschaften

Schmelzpunkt	59-61 °C(lit.)
Siedepunkt	539.2±50.0 °C(Predicted)
Dichte	0.936±0.06 g/cm3(Predicted)
Dampfdruck	0.005Pa at 20℃
storage temp.	Inert atmosphere,Room Temperature
Löslichkeit	DMSO (Slightly), Ethyl Acetate (Slightly)
Aggregatzustand	Solid
pka	9.07±0.40(Predicted)
Farbe	Off-White
Wasserlöslichkeit	10μg/L at 20℃
LogP	12.332
CAS Datenbank	67845-93-6(CAS DataBase Reference)
EPA chemische Informationen	Benzoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, hexadecyl ester (67845-93-6)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36
WGK Germany	3
RTECS-Nr.	DG4436220
HS Code	2916399090

Gefahreninformationscode (GHS)

UV Absorber 2908 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.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Physikalische Eigenschaften
It is white to faint yellow powder. The specific gravity is 1.07 at 25℃. It is easy soluble in toluene, chloroform, hexane, soluble in acetone etc.
Verwenden
The product belongs to the class of hindered hydroxybenzoate light stabilizer. UV-2908 is most suitable for the protection of polyolefins, polycarbonate and the systems containing flame retardants and thioesters. It can be used alone or in combination with benzophenone UV stabilizer or phosphite antioxidant, showing good synergistic effect.The dosage of UV-2908 ranges between 0.25% and 1% are recommended for protection. It depends on the substrate and performance requirement of the final application.
Verwenden
DXSORB 2908 is an excellent light stabilizer, low volatility, small coloring, good chemical stability, acid and alkali resistance. Suitable for PP and PE and other polyolefin plastics, the general dosage of 0.25 ~ 0.1%. This product can be used alone or in combination with benzophenone ultraviolet stabilizer or phosphite antioxidant, showing good synergistic effect.
benefits
Low volatility, minimal color contribution, good chemical stability, acid and alkali resistant, excellent compatibilty with UV absorbers, HALS, and thioesters, FDA sanctioned to 0.5% in polyolefins
Flammability and Explosibility
Not classified
Sicherheit(Safety)
In accordance with good industrial practice, handle with care and avoid unnecessary personal contact. Avoid continuous or repetitive breathing of dust. UV Absorber 2908 is used only with adequate ventilation. Avoid dust formation and ignition sources.
Synthese
1.Add 3,5-di-tert-butyl-4-hydroxybenzoic acid (3.03 g), 1-hexadecanol (4.42 g), toluene (30 ml) and dried ion-exchange resin (1.49 g, 20 wt%) into a two-necked round flask equipped with a magnetic stirrer for 11.5 hours.2.High performance liquid chromatography is adopted to monitor the reaction and determine the component of the reaction mixture.

Hexadecyl-3,5-bis-tert-butyl-4-hydroxybenzoat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

67845-93-6, UV Absorber 2908 Verwandte Suche:

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