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1948-33-0

1948-33-0 Structure

1948-33-0 Structure
IdentificationMore
[Name]

tert-Butylhydroquinone
[CAS]

1948-33-0
[Synonyms]

1-T-BUTYL-1,4-DIHYDROXYBENZENE
2-(1,1-Dimethylethyl)-1,4-benzenediol
2-T-BUTYLHYDROQUINONE
2-TERT-BUTYL-1,4-BENZENEDIOL
2-TERT-BUTYL-1,4-DIHYDROXYBENZENE
2-tert-butylhydroquinone
Butylhydroquinone
MONO-TERT-BUTYLHYDROQUINONE
TBHQ
T-BUTYLHYDROQUINONE
TERT-BUTYLHYDROCHINONE
TERT-BUTYLHYDROQUINONE
TERTIARY BUTYL HYDROQUINONE
1-dimethylethyl)-4-benzenediol(1
2-(1,1-dimethylethyl)-4-benzenediol
2-t-Butyl-1,4-benzenediol
2-tert-butylhydroquinen
2-tetrabutyl-1,4-dihydroxybenzene
4-Benzenediol,2-(1,1-dimethylethyl)-1
banox20ba
[EINECS(EC#)]

217-752-2
[Molecular Formula]

C10H14O2
[MDL Number]

MFCD00002344
[Molecular Weight]

166.22
[MOL File]

1948-33-0.mol
Chemical PropertiesBack Directory
[Appearance]

tan powder
[Melting point ]

127-129 °C(lit.)
[mp ]

127-129 °C(lit.)
[Boiling point ]

295 °C
[bp ]

295 °C
[density ]

295
[refractive index ]

1.4859 (estimate)
[Fp ]

171 °C
[storage temp. ]

Store below +30°C.
[form ]

Crystalline Powder
[pka]

10.80±0.18(Predicted)
[color ]

White to light tan, may contain black specs
[Stability:]

Stable. Incompatible with strong bases, strong oxidizing agents.
[Water Solubility ]

Slightly soluble in water(10g/L).
[BRN ]

637923
[InChIKey]

BGNXCDMCOKJUMV-UHFFFAOYSA-N
[Contact allergens]

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
[Uses]

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.
[CAS DataBase Reference]

1948-33-0(CAS DataBase Reference)
[NIST Chemistry Reference]

1,4-Benzenediol, 2-(1,1-dimethylethyl)-(1948-33-0)
[EPA Substance Registry System]

1948-33-0(EPA Substance)
Hazard InformationBack Directory
[Chemical Properties]

tan powder
[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.
[General Description]

White to light tan crystalline powder or a fine beige powder. Very slight aromatic odor.
[Reactivity Profile]

Phenols, such as TERT-BUTYLHYDROQUINONE(1948-33-0), 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. This chemical is incompatible with oxidizers.
[Air & Water Reactions]

Insoluble in water.
[Fire Hazard]

This chemical is combustible.
[Purification Methods]

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.]
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
[RIDADR ]

UN3077
[WGK Germany ]

3
[RTECS ]

MX4375000
[Autoignition Temperature]

855 °F
[TSCA ]

Yes
[HazardClass ]

9
[PackingGroup ]

III
[HS Code ]

29072900
[Hazardous Substances Data]

1948-33-0(Hazardous Substances Data)
Raw materials And Preparation ProductsBack Directory
【Raw materials】

Hydroquinone-->ISOBUTYLENE-->tert-Butylbenzene-->2,5-Di-tert-butylhydroquinone
【Preparation Products】

Butylated hydroxyanisole-->2-tert-butyl-1,4-dimethoxybenzene-->2,6-di-tert-butylhydroquinone
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

Butylhydroquinone(1948-33-0).msds
Spectrum DetailBack Directory
[Spectrum Detail]

tert-Butylhydroquinone(1948-33-0)MS
tert-Butylhydroquinone(1948-33-0)IR1
tert-Butylhydroquinone(1948-33-0)IR2
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

tert-Butylhydroquinone, 97%(1948-33-0)
[Alfa Aesar]

tert-Butylhydroquinone, 97%(1948-33-0)
[Sigma Aldrich]

1948-33-0(sigmaaldrich)
[TCI AMERICA]

tert-Butylhydroquinone,>98.0%(GC)(1948-33-0)
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