2,2',4,4'-Tetrahydroxybenzophenon

Bezeichnung:2,2',4,4'-Tetrahydroxybenzophenon

CAS-Nr131-55-5

Englisch Name:2,2',4,4'-Tetrahydroxybenzophenone

CBNumberCB6344256

SummenformelC13H10O5

Molgewicht246.22

MOL-Datei131-55-5.mol

Synonyma

2,2',4,4'-Tetrahydroxybenzophenon

2,2',4,4'-Tetrahydroxybenzophenon physikalisch-chemischer Eigenschaften

Schmelzpunkt	198-200 °C(lit.)
Siedepunkt	349.21°C (rough estimate)
Dichte	1.216
Brechungsindex	1.4825 (estimate)
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	DMSO (Slightly, Sonicated), Methanol (Slightly)
Aggregatzustand	Solid
pka	6.98±0.35(Predicted)
Farbe	Needles from H2O
Wasserlöslichkeit	Slightly soluble in water.
BRN	1914746
Stabilität	Hygroscopic
InChIKey	WXNRYSGJLQFHBR-UHFFFAOYSA-N
LogP	3.091 (est)
CAS Datenbank	131-55-5(CAS DataBase Reference)
NIST chemische Informationen	2,2',4,4'-Tetrahydroxybenzophenone(131-55-5)
EPA chemische Informationen	2,2',4,4'-Tetrahydroxybenzophenone (131-55-5)

Sicherheit

Kennzeichnung gefährlicher	Xn,Xi
R-Sätze:	22-36/37/38
S-Sätze:	26-36-37/39
WGK Germany	3
RTECS-Nr.	DJ1892000
TSCA	Yes
HS Code	29145090
Giftige Stoffe Daten	131-55-5(Hazardous Substances Data)
Toxizität	LD50 oral in rat: 1220mg/kg

Gefahreninformationscode (GHS)

2,2',4,4'-Tetrahydroxybenzophenone Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
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.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
yellow to brown crystalline powder
Verwenden
2,2',4,4'-Tetrahydroxybenzophenone is a uV-absorber that helps protect against product degradation because of uV-light exposure. It can also mask odor associated with a formulation’s composition.
Verwenden
2,2′,4,4′-Tetrahydroxybenzophenone are benzophenone-type UV filters with known or suspected endocrine disrupting properties detected in surface waters, sunscreens, personal care products, clothing and food packaging. It is used to protect the skin and materials from the adverse effects of UV-radiation.
Verwenden
2,2',4,4'-Tetrahydroxybenzophenone is used as the raw material of ultraviolet absorbers in cosmetics, plastics, resins and rubber. It is used as pharmaceutical intermediates and light-sensitive materials. It is also used as pharmaceutical adjuvant.
synthetische
Obtained (small amount) by melting a fluorescin chloride/sodium hydroxide mixture in the presence of a very few water at 230–240° for 2–3 h.
Kontakt-Allergie
BZP-2 is widely used in perfumes to prevent their degradation due to light. It can cause allergic contact dermatitis.
Sicherheitsprofil
Moderately toxic by ingestion. Aneye irritant. Mutation data reported. When heated todecomposition it emits toxic fumes of NOx.
Synthese
2 mol of resorcinol dimethyl ether is added dropwise to a mixture of 1 mol of phosgene and 1 mol of aluminum chloride, and the mixture is heated to 65-80° C at a temperature of 30-40° C in the presence of a chlorinated hydrocarbon selected from aliphatic and aromatic chlorides, such as ethylene dichloride. It is then cooled to 40° C, 2 to 3 mol of aluminum chloride are added, the mixture is heated to 60-70° C, dilute hydrochloric acid is treated with aqueous sodium hydroxide solution, and 2,2',4,4'-Tetrahydroxybenzophenone is isolated by filtration.

2,2',4,4'-Tetrahydroxybenzophenone Upstream-Materialien And Downstream Produkte

2,2',4,4'-Tetrahydroxybenzophenon Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

131-55-5, 2,2',4,4'-Tetrahydroxybenzophenone Verwandte Suche:

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