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143-74-8

Articles about 143-74-8Total 3 be found

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Orndorff,Sherwood
p. 486
(1923)
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Solvent-free one-pot synthesis of sulfonephthaleins from saccharin and phenols
Sulfonephthaleins can be synthesized in a single pot from saccharin and phenol via the in situ formation of 2-sulfobenzoic anhydride, followed by its reaction with phenol using H2SO4 as the condensing agent, in the absence of any solvent. This solvent-free synthesis is more economical and environmentally benign. Copyright Taylor & Francis Group, LLC.
Tillu,Dumbre,Borate,Wakharkar,Choudhary
experimental part
p. 1101 - 1107
(2012/05/05)

Solvent-free synthesis of sulfonephthaleins, sulfonefluoresceins and fluoresceins under microwave irradiation
An efficient solvent-free synthesis of sulfonephthaleins, sulfonefluoresceins and fluoresceins under microwave irradiation is reported.
Cihelnik, Simon,Stibor, Ivan,Lhotak, Pavel
p. 1779 - 1789
(2007/10/03)

Method for preparing high molecular weight meningococcal Group C vaccine
A vaccine against Group C meningococcal meningitis consisting of a polysaccharide of which at least 80% by weight has a molecular weight in excess of 1,000,000 daltons is prepared. The polysaccharide was isolated from Group C hexadecyl trimethylammonium bromide cell paste with 1.0M CaCl2 extraction and purified by phenol extraction, ultracentrifugation at 100,000 g. and ethanol fractionation (30%-45% v/v in ethanol).
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(2008/06/13)

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Chemical Properties

Appearance/Colour :dark red powder
Melting Point: 300 °C
Boiling Point: 562.8 °C at 760 mmHg
Flash Point:294.2 °C
Density: 1.477 g/cm³
Solubility:1 M NaOH: soluble1mg/mL
Storage Temp.:Store at RT.
Vapor Pressure: 2.84E-13mmHg at 25°C
Refractive Index: 1.697
PKA: 7.9(at 25℃)
Merck: 14,7247
BRN: 326470
PSA: 92.21000
LogP: 4.18940

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