Unfortunately, the stabilizer for this product is considered proprietary.
425478
Sulfur trioxide
contains stabilizer, ≥99%
Synonym(s):
Sulfuric anhydride
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About This Item
Linear Formula:
SO3
CAS Number:
Molecular Weight:
80.06
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.21
grade:
for analytical purposes
Pricing and availability is not currently available.
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grade
for analytical purposes
Quality Level
vapor density
2.8 (vs air)
vapor pressure
280 mmHg ( 25 °C)
Assay
≥99%
contains
stabilizer
reaction suitability
reagent type: oxidant
bp
44.7 °C (lit.)
mp
16.8 °C (lit.)
density
1.97 g/mL at 25 °C (lit.)
SMILES string
O=S(=O)=O
InChI
1S/O3S/c1-4(2)3
InChI key
AKEJUJNQAAGONA-UHFFFAOYSA-N
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General description
Sulfur trioxide (SO3) is an oxide of sulfur. It is released during the combustion of sulfur bearing fuels.[1] Sulfur dioxide in the presence of vanadia catalyst oxidizes to form sulfur trioxide. The kinetics of this reaction has been studied.[2] Density function theory and ab initio methods have been used to study the hydrolysis of SO3 to form sulfuric acid.[3]
Application
Sulfur trioxide (SO3) may be used in the synthesis of methane sulfonic acid (MSA) by sulfonating methane.[4]
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Dam. 1 - Skin Corr. 1A - STOT SE 3
Target Organs
Respiratory system
Supplementary Hazards
Storage Class Code
8B - Non-combustible corrosive hazardous materials
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Hydrolysis of sulfur trioxide to form sulfuric acid in small water clusters.
Larson LJ, et al.
J. Chem. Phys. , 112(20), 8830-8838 (2000)
Luguang Chen et al.
Environmental science & technology, 47(3), 1729-1734 (2013-01-11)
Sulfur emission from a Victorian brown coal was quantitatively determined through controlled experiments in a continuously fed drop-tube furnace under three different atmospheres: pyrolysis, oxy-fuel combustion, and carbon dioxide gasification conditions. The species measured were H(2)S, SO(2), COS, CS(2), and
Mohammad Solimannejad et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 61(3), 373-375 (2004-12-08)
Ab initio computational study of the electronic structure and infrared spectra of donor-acceptor complexes formed between SO3 and CH3X (X = F, Cl, Br) molecules was carried out at the MP2(full)/6-31G(d) level of theory. The calculated complexation energy at G2MP2
Huimin Qi et al.
International journal of biological macromolecules, 37(4), 195-199 (2005-11-29)
Polysaccharide extracted from Ulva pertusa (Chlorophyta) is a group of sulfated heteropolysaccharide; for simplicity, the sulfated polysaccharide is referred to as ulvan in this paper. In this study, different sulfate content ulvans were prepared with sulfur trioxide/N,N-dimethylformamide (SO3-DMF) in formamide
M Thanou et al.
Journal of controlled release : official journal of the Controlled Release Society, 117(2), 171-178 (2006-12-23)
Chitosan has been shown to act on the mucosal epithelial barriers mainly when protonated at acidic pH values in which it is soluble. Soluble chitosan is able to improve the permeation and absorption of neutral to cationic macromolecules only, as
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