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4-t-?????

4-t-?????
4-t-????? ??? ???
?? ??:
98-29-3
???:
4-t-?????
???(??):
4-t-?????;4-???????;4-???????;p-tert-???????;4-tert-???????;1,2-???????-4-tert-????;4-(1,1-??????)-1,2-?????;4-tert-??-1,2-?????????;4-tert-??-1,2-?????;4-tert-?????;5-tert-?????;???, 4-tert-??-;p-tert-?????
???:
4-tert-Butylcatechol
???(??):
TBC;4-tbc;4-TERT-BUTYL-1,2-BENZENEDIOL;PTBC;4-t-Butylcatechol;P-TERT-BUTYL CATECHOL;4-TERT-BUTYLPYROCATECHOL;T-BUTYL CATECHOL;P-T-BUTYLCATECHOL;p-tert-Butylpyrocatechol
CBNumber:
CB1390571
???:
C10H14O2
??? ??:
166.22
MOL ??:
98-29-3.mol
MSDS ??:
SDS

4-t-????? ??

???
52-55 °C(lit.)
?? ?
285 °C(lit.)
?? ??
650-700kg/m3
??
1.049
???
<1 hPa (25 °C)
???
n20/D 1.508
???
>230 °F
?? ??
Store below +30°C.
???
???: ??? 1g/10mL, ??, ??~?? ???
?? ?? (pKa)
9.92±0.10(Predicted)
??? ??
powder to lump
??
White to Light yellow to Light red
??
10.00?%?in?????? ?????. ???
???
0.2g/100mL(25℃)
??
Hygroscopic
BRN
2043335
?? ??
ACGIH: TWA 5 ppm (Skin)
NIOSH: TWA 5 ppm(20 mg/m3)
InChIKey
XESZUVZBAMCAEJ-UHFFFAOYSA-N
LogP
1.98 at 25℃
CAS ??????
98-29-3(CAS DataBase Reference)
NIST
1,2-Benzenediol, 4-(1,1-dimethylethyl)-(98-29-3)
EPA
p-tert-Butylcatechol (98-29-3)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? C,N,T
?? ???? ?? 22-34-43-21-51/53-21/22-39/23/24/25-20/21/22-10-50/53
????? 26-36/37/39-45-61-24-60
????(UN No.) UN 2923 8/PG 3
WGK ?? 2
RTECS ?? UX1400000
?? ?? ?? 160 °C
TSCA Yes
?? ?? 8
???? III
HS ?? 29072900
?? LD50 orally in Rabbit: 815 mg/kg LD50 dermal Rat 1331 mg/kg
???? ?? KE-11368
????(GHS): GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
?? ?: Danger
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H314 ??? ?? ??? ?? ??? ??? ????? ?? ????? ?? 1A, B, C ?? GHS hazard pictograms P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H317 ????? ?? ??? ??? ? ?? ?? ??? ?? ?? 1 ?? GHS hazard pictograms P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H410 ??? ??? ?? ????? ?? ??? ?? ????? ?? - ?? ?? 1 ?? GHS hazard pictograms P273, P391, P501
??????:
P260 ??·?·??·???·??·...·????? ???? ???.
P273 ???? ???? ???.
P280 ????/???/???/?????? ?????.
P301+P312 ??? ???? ??? ????(??)? ??? ????.
P303+P361+P353 ??(?? ????)? ??? ??? ?? ??? ??? ????? ??? ?? ????/?????.
P305+P351+P338 ?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
NFPA 704
1
2 0

4-t-????? MSDS


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

4-t-????? C??? ??, ??, ??

??

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.

?? ??

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.

?? ??

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.

?? ?? ??

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.

Safety Profile

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

Purification Methods

Distil 4-tert-Butylcatechol in a vacuum, then recrystallise it from pentane or pet ether (or *C6H6).

4-t-????? ?? ?? ? ???

???

???? tert-????? ???

?? ??

N-???????????? 4-Vinylphenol 5-Ethyl-2-pyridineethanol 4-?????? 4-????? ???(3-)??? 5-(tert-butyl)-3-(morpholinomethyl)benzene-1,2-diol ???????? 2,5-??(5-??-??????-2-?)????

4-t-????? ?? ??

???( 625)?? ??
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