Detail of "88-58-4"

CAS Number:
88-58-4
Name:
1,4-Benzenediol,2,5-bis(1,1-dimethylethyl)-
Superlist Name:
2,5-Di-tert-butylhydroquinone
Molecular Structure:
Formula:
C₁₄H₂₂O₂
Molecular Weight:
222.36
Synonyms:
BHQ;DBH;DTBHQ;Dibug;NSC 11;NSC 9886;Naugard 451;Nocrac NS 7;NonflexAlba;Santovar O;Hydroquinone,2,5-di-tert-butyl- (8CI);1,4-Dihydroxy-2,5-di-tert-butylbenzene;2,5-Di-tert-butyl-1,4-benzenediol;2,5-Di-tert-butyl-1,4-benzohydroquinone;2,5-Di-tert-butyl-1,4-hydroquinone;2,5-Di-tert-butylquinol;2,5-Dihydroxy-1,4-di-tert-butylbenzene;Antage DBH;
EINECS:
201-841-8
Density:
1.012 g/cm³
Melting Point:
216-218 °C(lit.)
Boiling Point:
334.4 °C at 760 mmHg
Flash Point:
151.5 °C
Solubility:
insoluble in water
Appearance:
White or light yellow crystals
Hazard Symbols:
Xi
Risk Codes:
36/37/38
Safety:
26-24/25 Details

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Anaerobically curable sealant and adhesive composition: Anaerobically curable sealant and adhesive composition. Reich, Karl (Grace, W. R., and Co., USA). U.S. US 4429063 A 31 Jan 1984, 6 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08K005-43; C09K003-10. NCL: 523176000. APPLICATION: US 82-418497 15 Sep 1982. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) Section cross-reference(s): 42 Anaerobic sealants and adhesives comprising acrylic monomers and a redox system as polymn. catalyst are stabilized by sulfamide derivs. Storage stability is further improved by addn. of phenolic antioxidants, particularly sterically hindered phenols, without reducing the curing rate. Thus, a stabilizer was prepd. by reaction of AcOH with sulfuryl diisocyanate. The resultant N,N'-diacetylsulfamide (I) [29824-66-6] was incorporated in an adhesive contg. diethylene glycol dimethacrylate [2358-84-1], acrylic acid [79-10-7], redox system (cumene hydroperoxide [80-15-9]-N,N'-dimethyl-4-toluidine [99-97-8]-saccharin [81-07-2]), and 2,5-di-tert-butylhydroquinone [88-58-4] antioxidant.In this experiment, several chemicals are used like 79-10-7 and 18282-25-2 The adhesive, aged at 80°, had gelation time >600 min as compared to 25 min for a similar adhesive contg. no I. .

Antioxidative mechanism of binary additives containing phenothiazinones and hydroquinones: Antioxidative mechanism of binary additives containing phenothiazinones and hydroquinones. Kikkawa, Shoichi; Shimizu, Yasumi; Hatanaka, Koichi (Fac. Eng., Osaka Univ., Suita, Japan). Nippon Kagaku Kaishi, (5), 695-700 (Japanese) 1977. CODEN: NKAKB8. DOCUMENT TYPE: Journal CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Mixts. of 1,2,4-trichloro-3H-phenothiazin-3-one (I) [14118-06-0] and hydroquinones [hydroquinone [123-31-9], 2,5-di-tert-butylhydroquinone [88-58-4], tetrachlorohydroquinone (II) [87-87-6]] were antioxidants for liq. paraffin at 170.degree.. Since 1,2,4-trichlorophenothiazin-3-ol (III) [51209-23-5] was an effective antioxidant and was converted to I, the antioxidant activity presumably resulted from the redox reaction of I with hydroquinones and a radical termination reaction converting III to I. This conclusion was supported by the relation between oxidn. induction periods and I-II ratios. I homologs having higher redn. potentials did not show marked antioxidant activity with hydroquinones.