| Identification | More | [Name]
2,4'-DIHYDROXYDIPHENYL SULFONE | [CAS]
5397-34-2 | [Synonyms]
2,4'-DIHYDROXYDIPHENYL SULFONE
2-((4-hydroxyphenyl)sulfonyl)-pheno
2-((4-hydroxyphenyl)sulfonyl)phenol
2,4’-Dihydroxydiphenylsulfon
2,4’-sulfonyldi-pheno
2,4’-sulfonyldiphenol
2-[(4-hydroxyphenyl)sulfonyl]-pheno
4,2’-dihydroxydiphenylsulfone
o,p-dihydroxydiphenylsulfone
Dihydroxydiphenylsulfone
o-[(4-hydroxyphenyl)sulphonyl]phenol
2,4-BPS
2-((4-HYDROXYPHENYL)SULPHONYL)PHENOL
2,4''-DIHYDROXYDIPHENYL SULFONE 98+%
2,4'-Sulfonylbis(phenol)
2,4'-Sulfonylbisphenol | [EINECS(EC#)]
226-421-1 | [Molecular Formula]
C12H10O4S | [MDL Number]
MFCD01631305 | [Molecular Weight]
250.27 | [MOL File]
5397-34-2.mol |
| Safety Data | Back Directory | [Risk Statements ]
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 .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [RTECS ]
SL5365000 | [HS Code ]
2930.90.2900 |
| Hazard Information | Back Directory | [Uses]
24 Bisphenol S is a material used in thermal printing. 24 Bisphenol S is also used in the development of black leuco dyes. | [Synthesis]
Under stirring conditions, 100 g (1.0 mol) of sulfuric acid at a concentration of 98% was slowly added dropwise to a mixed system containing 144 g of homotrimethylbenzene, 189 g (2.0 mol) of phenol and 11.9 g (0.05 mol) of benzene-1,3-disulfonic acid. The reaction mixture was heated in an oil bath at 200°C. As the temperature approached 145°C, the reaction mixture began to boil. The distillate was condensed by means of a condenser and separated into two phases by means of a trap. The upper organic phase is continuously returned to the reaction system. The distillation process continues for 5 hours before the temperature of the reaction mixture reaches 165°C, at which point the volume of the lower aqueous phase separated by the trap stabilizes at 38 ml. Crystals precipitated out of the reaction system and formed a slurry. A small amount of the reaction slurry was taken and analyzed by high performance liquid chromatography (HPLC), which showed that the weight ratios of 4,4'-bisphenol S (4,4'-BS), 2,4'-dihydroxydiphenylsulfone (2,4'-BS), and trihydroxytriphenyl disulfone were 96.0%, 3.0%, and 1.0%, respectively. Subsequently, 237 g of crystal product was obtained according to the same post-treatment method as in Example 1. The composition (weight ratio) of this crystal product was 4,4'-BS / 2,4'-BS / trihydroxytriphenyl disulfone = 99.5 / 0.5 / 0. The yield of 4,4'-BS was 94% based on starting sulfuric acid. No sulfonic acids were detected in the crystalline product, which consisted mainly of benzene-1,3-disulfonic acid and phenolsulfonic acid. | [References]
[1] Patent: US2005/272956, 2005, A1. Location in patent: Page/Page column 5-6
[2] Patent: US2005/272956, 2005, A1. Location in patent: Page/Page column 6
[3] Patent: US2005/272956, 2005, A1. Location in patent: Page/Page column 5
[4] Russian Journal of Applied Chemistry, 2006, vol. 79, # 3, p. 425 - 429
[5] Patent: US2005/272956, 2005, A1. Location in patent: Page/Page column 6 |
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