Esters butylated hydroxyanisole

Although alkyl- and aryllithium reagents usually attack the carbonyl group of a, j3-unsaturated carbonyl compounds (1, 2-addition), conjugate addition (1, 4-addition) is observed with very hindered esters where approach to the carbonyl group is impeded, as in 2,6-di-terr-butyl-4-methylphenyl esters (butylated hydroxytoluene, BHT esters) and 2,6-di-tert-butyl-4-methoxyphenyl esters (butylated hydroxyanisole BHA esters). ... [Pg.283]

KJ Hammond. The determination of butylated hydroxyanisole (B.H.A.), butylated hydroxytoluene (B.H.T.) and individual gallate esters in fats and oils by high performance liquid chromatography. J Assoc Pub Anal 16 17-24, 1978. [Pg.618]

Ratio = blend ratio soybean oil fatty acid methyl esters (SME) in low-sulfur (<500ppm) No. 2 petrodiesel (LSD) where BO is 0% SME and B20 contains 20 vol% SME BHA = butylated hydroxyanisole BHT = butylated hydroxytoluene TBHQ = tert-butylhydroquinone. [Pg.11]

The addition of phenyllithium on unsaturated esters of bulky butylated hydroxyanisole (BHA) is also noteworthy152,153. Chiral diamines or diethers were the ligands employed in these last cases (Scheme 35). [Pg.546]

Antioxidants are frequently added to unsaturated fats and oils in order to protect these against oxidative deterioration. For this reason, they are also added to a variety of food products containing unsaturated lipids. Antioxidants frequently applied are esters of gallic acid, butylated hydroxyanisole (BHA), butylated hydroxytoluene... [Pg.278]

Preservatives Antimicrobial Benzalkonium chloride Benzyl alcohol Chlorhexidine Imidazolidinyl urea Phenol Potassium sorbate 1 Benzoic acid Bronopol Chlorocresol Paraben esters Phenoxyethanol Sorbic acid Antioxidants a-Tocopherol Ascorbic acid Ascorbyl palmitate Butylated hydroxyanisole Butylated hydroxytoluene Sodium ascorbate Sodium metabisulphite Chelating agents Citric acid Edetic acid... [Pg.545]

Alternative Pathway Butylated Hydroxytoluene Butylated Hydroxyanisole Caffeoyl Ester Unit Contact Growth Index Classical Pathway Dichloroethane Influenza Virus A Glucose... [Pg.345]

Various product forms may occur during storage (typical for fatty acid derivatives) or production. DSC has been used for detection of polymorphism of butylated hydroxyanisole (BHA) [91]. Similarly, DSC has allowed to detect various product forms of the hindered phenolic antioxidant octade-cyl 3-(3, 5 -di-f-butyl-4 -hydroxyphenyl) propionate (Anox PP 18), which caused handling problems during production [92]. The DSC method for purity determination as used for curatives, such as 2,2 -benzothiazyldisulfide (MBTS) [93], and for sulfur and accelerators [79], is also applicable to other additives, such as antioxidants and antiozonants. DSC and TGA have been used to establish the oxidation and weight loss characteristics of commercially available triaryl, trialkyl and alkyl-aryl phosphate esters, which are widely used as plasticisers and flame retardants in the polymer industry [94]. [Pg.166]

Butylated hydroxyanisole 1585 3-tert-Butyltoluene 1607 methyl ester 4536... [Pg.700]

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