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

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

CAS-Nr98-29-3

Englisch Name:4-tert-Butylcatechol

CBNumberCB1390571

SummenformelC10H14O2

Molgewicht166.22

MOL-Datei98-29-3.mol

Synonyma

4-tert-Butylbrenzcatechin

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

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

Schmelzpunkt	52-55 °C(lit.)
Siedepunkt	285 °C(lit.)
Dichte	1.049
Dampfdruck	<1 hPa (25 °C)
Brechungsindex	n20/D 1.508
Flammpunkt	>230 °F
storage temp.	Store below +30°C.
Löslichkeit	methanol: soluble1g/10 mL, clear, colorless to slightly yellow
pka	9.92±0.10(Predicted)
Aggregatzustand	powder to lump
Farbe	White to Light yellow to Light red
Geruch (Odor)	at 10.00?%?in?dipropylene glycol. phenolic
Wasserlöslichkeit	0.2 g/100 mL (25 ºC)
Sensitive	Hygroscopic
BRN	2043335
Expositionsgrenzwerte	ACGIH: TWA 5 ppm (Skin) NIOSH: TWA 5 ppm(20 mg/m3)
InChIKey	XESZUVZBAMCAEJ-UHFFFAOYSA-N
LogP	1.98 at 25℃
CAS Datenbank	98-29-3(CAS DataBase Reference)
NIST chemische Informationen	1,2-Benzenediol, 4-(1,1-dimethylethyl)-(98-29-3)
EPA chemische Informationen	p-tert-Butylcatechol (98-29-3)

Sicherheit

Kennzeichnung gefährlicher	C,N,T
R-Sätze:	22-34-43-21-51/53-21/22-39/23/24/25-20/21/22-10-50/53
S-Sätze:	26-36/37/39-45-61-24-60
RIDADR	UN 2923 8/PG 3
WGK Germany	2
RTECS-Nr.	UX1400000
Selbstentzündungstemperatur	160 °C
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	29072900
Toxizität	LD50 orally in Rabbit: 815 mg/kg LD50 dermal Rat 1331 mg/kg

Gefahreninformationscode (GHS)

4-tert-Butylcatechol Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R34:Verursacht Verätzungen.
R43:Sensibilisierung durch Hautkontakt möglich.
R21:Gesundheitsschädlich bei Berührung mit der Haut.
R51/53:Giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
R21/22:Gesundheitsschädlich bei Berührung mit der Haut und beim Verschlucken.
R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
R10:Entzündlich.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
S24:Berührung mit der Haut vermeiden.
Beschreibung
Para-tertiary butyl catechol is specially prepared by reacting the impure catechol fraction with tertiary butyl alcohol. Used for its various properties (inhibition of polymerization and as an antioxidizing agent) in the manufacture of rubber, plastics and paints, in the preparation of petrolatum products, and as an antioxidant in oils, it may induce vitiligo.
Chemische Eigenschaften
white to cream flakes
Verwenden
Polymerization inhibitor for styrene-butadiene and other olefins.
Inhibitor-remover packings and ready-to-use, disposable prepacked columns offer a quick and convenient means of removing small amounts of inhibitors which are added to reagents or solvents that would otherwise be unstable (e.g., they may polymerize, oxidize or darken) on storage.
The inhibitor removers are useful in applications which require that the stabilizer or inhibitor [i.e., hydroquinone (HQ), hydroquinone monomethyl ether (MEHQ, 4-methoxyphenol) or 4-tert-butylcatechol (TBC)] be removed prior to use.
Verwenden
4-tert-butylcatechol (PTBC) is used as an antioxidant in fats, oils, and mineral oils, and as a stabilizer in polyester resins and polystyrene resins. A concentration of PTBC (up to 0.005%) can be found in paints, glues, thermal paper, lubricating oil, and mineral oil products.
4-tert-Butylcatechol is widely utilized as an inhibitor in polymerization of butadiene, styrene, vinyl acetate and other reactive monomers. It plays an important role in the synthesis of tungsten oxide nanoparticles by nonaqueous sol-gel process. It acts as a stabilizer in the manufacturing of polyurethane foam. It is employed as an antioxidant for synthetic rubber, polymers and oil derivatives. It is also utilized as a purification agent for aminoformate catalysts.
Allgemeine Beschreibung
4-tert-Butylcatechol,in the presence of O₂ catalyzed by tyrosinase, yields 4-tert-butyl-o-benzoquinone. Electrochemical oxidation of 4-tert-Butylcatechol in the presence of 4-hydroxycoumarin as nucleophile has been studied using cyclic voltammetry and controlled-potential coulometry. It undergoes electrochemical trimerization via anodic oxidation and mechanism of trimerization has been studied using cyclic voltammetry and controlled-potential coulometry.
Hazard
Toxic by ingestion and skin absorption.
Flammability and Explosibility
Not classified
Kontakt-Allergie
p-tert-Butyl catechol is specially prepared by reacting the impure catechol fraction with tertiary butyl alcohol. It is used for its various properties (inhibitor of polymerization and antioxidizing agent) in the manufacture of rubber, plastics, and paints, in the preparation of petrolatum products, and as an antioxidant in oils. It may induce vitiligo.
Sicherheitsprofil
A poison by intravenous route. Moderately toxic by ingestion and skin absorption. A severe skin and eye irritant. Mutation data reported. Combustible when exposed to heat or flame. To fight fire, use Con, dry chemical, fog, mist. When heated to decomposition it emits acrid and irritating fumes
läuterung methode
Distil it in a vacuum, then recrystallise it from pentane or pet ether (or *C6H6). [Beilstein

4-tert-Butylcatechol Upstream-Materialien And Downstream Produkte

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

98-29-3, 4-tert-Butylcatechol Verwandte Suche:

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