2-(1,1-Dimethylethyl)-1,4-benzoldiol

Bezeichnung:2-(1,1-Dimethylethyl)-1,4-benzoldiol

CAS-Nr1948-33-0

Englisch Name:tert-Butylhydroquinone

CBNumberCB0415105

SummenformelC10H14O2

Molgewicht166.22

MOL-Datei1948-33-0.mol

Synonyma

2-tert-Butylhydrochinon

2-(1,1-Dimethylethyl)-1,4-benzoldiol

2-(1,1-Dimethylethyl)-1,4-benzoldiol physikalisch-chemischer Eigenschaften

Schmelzpunkt	127-129 °C(lit.)
Siedepunkt	295 °C
Dichte	295
Dampfdruck	0.004Pa at 25℃
Brechungsindex	1.4859 (estimate)
Flammpunkt	171 °C
storage temp.	Store below +30°C.
Löslichkeit	DMSO (Slightly), Methanol (Slightly)
pka	10.80±0.18(Predicted)
Aggregatzustand	Crystalline Powder
Farbe	White to light tan, may contain black specs
Wasserlöslichkeit	Slightly soluble in water(10g/L).
BRN	637923
Stabilität	Stable. Incompatible with strong bases, strong oxidizing agents.
InChIKey	BGNXCDMCOKJUMV-UHFFFAOYSA-N
LogP	1.521 at 25℃
CAS Datenbank	1948-33-0(CAS DataBase Reference)
NIST chemische Informationen	1,4-Benzenediol, 2-(1,1-dimethylethyl)-(1948-33-0)
EPA chemische Informationen	tert-Butylhydroquinone (1948-33-0)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	22-36/37/38
S-Sätze:	26-36-28A
RIDADR	UN3077
WGK Germany	3
RTECS-Nr.	MX4375000
Selbstentzündungstemperatur	855 °F
TSCA	Yes
HazardClass	9
PackingGroup	III
HS Code	29072900
Giftige Stoffe Daten	1948-33-0(Hazardous Substances Data)
Toxizität	guinea pig,LD50,oral,790mg/kg (790mg/kg),WHO Food Additives Series. Vol. 8, Pg. 26, 1975.

Gefahreninformationscode (GHS)

tert-Butylhydroquinone 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.
Chemische Eigenschaften
White, crystalline solid having a characteristic odour.

tert-Butylhydroquinone (TBHQ) is an antioxidant used to preserve oils, fats and food items. It is found in vegetable oils and animal fats, varnishes, lacquers, resins, oils field additives, and perfumes.In low concentrations it shows cytoprotective qualities while at higher concentrations it exhibits cytotoxic behavior.
TBHQ was used to study the inactivation of barotolerant strains of Listeria monocytogenes and Escherichia coli.Environment friendly electrode materials for supercapacitors were attained by decorating the surface of graphene nanosheets with TBHQ.
Verwenden
antioxidant in cosmetic products like lipsticks.
Verwenden
TBHQ was used to study the inactivation of barotolerant strains of Listeria monocytogenes and Escherichia coli. Environment friendly electrode materials for supercapacitors were attained by decorating the surface of graphene nanosheets with TBHQ. TBHQ is frequently used as a food preservative. Inhibition of oxidative rancidity in frozen cooked fish flakes by tert-butylhydroquinone. Nuclear factor E2-related factor 2-dependent antioxidant response element activation is by tert-butylhydroquinoneoccurring preferentially in Astrocytes conditions.
Verwenden
tert-Butylhydroquinone (TBHQ) is an antioxidant that exhibits an excellent stabilizing effect in unsaturated fats and oils. It has good solubility in fats and oils, with a maximum usage level of 0.02% based on the weight of the fat or oil or the fat content of the food product. It shows no discoloration in the presence of iron and produces no discernible flavor or odor. It can be combined with BHA and BHT. It is used in edible fats and vegetable oils to retard rancidity. It is used in potato chips and dry cereal. It is also termed butylhydroquinone and mono-tertiary-butylhydroquinone.
Definition
ChEBI: A member of the class of hydroquinones in which one of the ring hydrogens of hydroquinone is replaced by a tert-butyl group.
Allgemeine Beschreibung
White to light tan crystalline powder or a fine beige powder. Very slight aromatic odor.
Air & Water Reaktionen
Insoluble in water.
Reaktivität anzeigen
Phenols, such as tert-Butylhydroquinone, do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has Ka = 1.3 x 10^[-10]). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (for example, by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid. Nitrated phenols often explode when heated. Many of them form metal salts that tend toward detonation by rather mild shock. tert-Butylhydroquinone is incompatible with oxidizers.
Brandgefahr
tert-Butylhydroquinone is combustible.
Flammability and Explosibility
Non flammable
Kontakt-Allergie
This antioxidant has seldom been reported as a sensitizer, mainly in cosmetics (lipsticks, lip-gloss, hair dyes) or in cutting oils. Simultaneous/cross-reactions have been described to butylhydroxyanisole (BHA) and less frequently to butylhydroxytoluene (BHT), but not to hydroquinone
läuterung methode
Recrystallise the hydroquinone from H2O or MeOH and dry it in a vacuum at 70o. Store it in a dark container. [Stroh et al. Angew Chem 69 699 1957, Beilstein 6 IV 6013.]

tert-Butylhydroquinone Upstream-Materialien And Downstream Produkte

2-(1,1-Dimethylethyl)-1,4-benzoldiol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

1948-33-0, tert-Butylhydroquinone Verwandte Suche:

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