Eastman Tenox™ food-grade antioxidants inhibit the rancidity of creams and lotions for a variety of personal care products including skin care, sun care, hair care, color cosmetics, fragrances, antiperspirants, and deodorant.
For cosmetics and personal care products, the optimum level of antioxidant ranges from 0.02% to 0.1%.
Tenox™ TBHQ forms colored complexes with amines in fatty acid/amine emulsifier systems at alkaline pH so some discoloration may occur. To prevent discoloration, Eastman suggests neutralizing acids with amines to a pH of 7 or less.
Tenox™ Antioxidant Effectiveness
The oil stability index (OSI) is an automated, accelerated method of measuring the effect of antioxidants on the stability of fats and oils. The induction period is recorded as the number of hours at which rapid acceleration of oxidation occurs. These charts show the effect of Tenox™ in comparison to other antioxidants on the oxidation of popular oils.
This data is also available for other oils, just CONTACT US for more details or for help with your cosmetics formulations.
Tenox™ Antioxidant Physical Properties
Tenox™ TBHQ
Tertiary Butylhydroquinone
Tenox™ BHT
Butylated Hydroxytoluene
Tenox™ BHA
Butylated
Hydroxyanisole
INCI Name
TBHQ
BHT
BHA
Molecular weight
166.22
220
180.25
Physical appearance
White to light tan crystals
White granular crystals
White to slightly yellow waxy solid
Boiling point
300ºC @ 760 mm
265ºC @ 760 mm
264 - 270ºC @ 733 mm
Melting point
126.5 - 128.5ºC
69.7ºC
48 - 63ºC
Odor
Very slight
Very slight
Slight
Water solubility
Soluble
Insoluble
Insoluble
Ethanol solubility
Soluble
Soluble
Soluble
Lipid solubility
Soluble
Soluble
Soluble
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