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1948-33-0

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Identification

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 Properties

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
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 Information

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.

Safety Data

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

TSCA 
Yes
HazardClass 
9
PackingGroup 
III
HS Code 
29072900
Hazardous Substances Data
1948-33-0(Hazardous Substances Data)

Raw materials And Preparation Products

Material Safety Data Sheet(MSDS)

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