Sulfur trioxide
Sulfur trioxide structure
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Common Name | Sulfur trioxide | ||
|---|---|---|---|---|
| CAS Number | 7446-11-9 | Molecular Weight | 80.06320 | |
| Density | 1.97 g/mL at 25 °C(lit.) | Boiling Point | 44.8 °C | |
| Molecular Formula | O3S | Melting Point | 16.8 °C(lit.) | |
| MSDS | Chinese USA | Flash Point | N/A | |
| Symbol |
GHS05, GHS07 |
Signal Word | Danger | |
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Comparative study on intestinal metabolism and absorption in vivo of ginsenosides in sulphur-fumigated and non-fumigated ginseng by ultra performance liquid chromatography quadruple time-of-flight mass spectrometry based chemical profiling approach.
Drug Test. Anal. 7(4) , 320-30, (2015) Our previous study indicated that sulphur-fumigation of ginseng in post-harvest handling processes could induce chemical transformation of ginsenosides to generate multiple ginsenoside sulphur derivatives. In this study, the influence of sulphur-fumigation on... |
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Preparation and in vitro antioxidant activities of 6-amino-6-deoxychitosan and its sulfonated derivatives.
Biopolymers 103 , 539-49, (2015) The 6-amino-6-deoxychitosan (NC) and their 2, 6-di-N-sulfonated derivatives were prepared via N-phthaloylation, tosylation, azidation, hydrazinolysis, reduction of azide groups and N-sulfonation, and their structures were systematically characterized by FT-IR... |
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Ligand regulation of a constitutively dimeric EGF receptor.
Nat. Commun. 6 , 7380, (2015) Ligand-induced receptor dimerization has traditionally been viewed as the key event in transmembrane signalling by epidermal growth factor receptors (EGFRs). Here we show that the Caenorhabditis elegans EGFR orthologue LET-23 is constitutively dimeric, yet re... |
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Purification and Molecular Characterization of the Novel Highly Potent Bacteriocin TSU4 Produced by Lactobacillus animalis TSU4.
Appl. Biochem. Biotechnol. 177 , 90-104, (2015) Bacterial infections causing fish diseases and spoilage during fish food processing and storage are major concerns in aquaculture. Use of bacteriocins has recently been considered as an effective strategy for prevention of bacterial infections. A novel bacter... |
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Electrophilic aromatic sulfonation with SO3: concerted or classic S(E)Ar mechanism?
J. Am. Chem. Soc. 133(47) , 19094-101, (2011) The electrophilic sulfonation of several arenes with SO(3) was examined by electronic structure computations at the M06-2X/6-311+G(2d,2p) and SCS-MP2/6-311+G(2d,2p) levels of theory. In contrast to the usual interpretations, the results provide clear evidence... |
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Sulphation pattern analysis of chemically sulphated polysaccharide LbGp1 from Lycium barbarum by GC-MS.
Food Chem. 170 , 22-9, (2014) The polysaccharide LbGp1 from Lycium barbarum L. was sulphated with sulphur trioxide-pyridine complex in DMF, yielding two sulphated polysaccharides, which were LbGp1-OL-SL with 13.7% sulphate content, and LbGp1-OL-SH with 27.4% sulphate content. The sulphati... |
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Chemo-enzymatic supported synthesis of the 3-sulfated Lewis a pentasaccharide on a multimeric polyethylene glycol.
Carbohydr. Res. 343(5) , 970-6, (2008) The 3-sulfated Lewis(a) pentasaccharide was synthesized on multimeric-based polyethylene glycol support. Coupling of O-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-(1-->3)-4,6-di-O-acetyl-2-deoxy-2-phthalimido-beta-D-glucopyranosyl trichloroacetimidate wi... |
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Studies of the fate of sulfur trioxide in coal-fired utility boilers based on modified selected condensation methods.
Environ. Sci. Technol. 44(9) , 3429-34, (2010) The formation of sulfur trioxide (SO(3)) in coal-fired utility boilers can have negative effects on boiler performance and operation, such as fouling and corrosion of equipment, efficiency loss in the air preheater (APH), increase in stack opacity, and the fo... |
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Adsorption of sulfur dioxide on natural clinoptilolite chemically modified with salt solutions.
J. Hazard. Mater. 167(1-3) , 306-12, (2009) Various ion exchange forms of preliminary partly decationised zeolite (hydrogen forms) were obtained by indirect modification with metal salt solutions, as well as by direct treatment of natural clinoptilolite taken from Bulgarian deposits. Direct modificatio... |
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Formic acid catalyzed hydrolysis of SO3 in the gas phase: a barrierless mechanism for sulfuric acid production of potential atmospheric importance.
J. Am. Chem. Soc. 133(43) , 17444-53, (2011) Computational studies at the B3LYP/6-311++G(3df,3pd) and MP2/6-311++G(3df,3pd) levels are performed to explore the changes in reaction barrier height for the gas phase hydrolysis of SO(3) to form H(2)SO(4) in the presence of a single formic acid (FA) molecule... |