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227692

Sigma-Aldrich

Sulfur trioxide

contains stabilizer, ≥99%

Synonim(y):

Sulfuric anhydride

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About This Item

Wzór liniowy:
SO3
Numer CAS:
7446-11-9
Masa cząsteczkowa:
80.06
Numer WE:
231-197-3
Numer MDL:
MFCD00011452
Kod UNSPSC:
12352300
Identyfikator substancji w PubChem:
24853646

gęstość pary

2.8 (vs air)

ciśnienie pary

280 mmHg ( 25 °C)

Próba

≥99%

Formularz

liquid

zawiera

stabilizer

przydatność reakcji

reagent type: oxidant

zanieczyszczenia

low-melting solid polymer (the formation of which is unavoidable)

bp

44.7 °C (lit.)

mp

16.8 °C (lit.)

gęstość

1.97 g/mL at 25 °C (lit.)

ciąg SMILES

O=S(=O)=O

InChI

1S/O3S/c1-4(2)3

Klucz InChI

AKEJUJNQAAGONA-UHFFFAOYSA-N

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Opis ogólny

Sulfur trioxide is an oxide of sulfur that is released during the combustion of sulfur bearing fuels.[1] It can be prepared by the oxidation of sulfur dioxide in the presence of vanadia catalyst.[2]

Zastosowanie

Sulfur trioxide may be used in the synthesis of methane sulfonic acid (MSA) by sulfonating methane.[3] it may also be used in the synthesis of fluorinated β-sultones by reacting with fluoroolefins.[4]
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Piktogramy

CorrosionExclamation mark
GHS05,GHS07

Hasło ostrzegawcze

Danger

Zwroty wskazujące rodzaj zagrożenia

H314,H335

Klasyfikacja zagrożeń

Eye Dam. 1 - Skin Corr. 1A - STOT SE 3

Organy docelowe

Respiratory system

Zagrożenia dodatkowe

EUH014

Kod klasy składowania

8B - Non-combustible corrosive hazardous materials

Klasa zagrożenia wodnego (WGK)

WGK 1

Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable

Środki ochrony indywidualnej

Faceshields, Gloves, Goggles

Wybierz jedną z najnowszych wersji:

Certyfikaty analizy (CoA)

Lot/Batch Number
SHBG3466V
SHBD6919V
SHBD3739V
40696JKV
SHBB4988V

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Jeśli potrzebujesz konkretnej wersji, możesz wyszukać konkretny certyfikat według numeru partii lub serii.

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Odwiedź Bibliotekę dokumentów

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. Is Product 227692, Sulfur trioxide, OK to use if it contains solids?

    This product may contain low-melting solid polymer, which is unavoidable. If the material is not completely liquid, place the bottle in a glass beaker or metal pail and warm under heat lamp or in an oven at 35°C. DO NOT OVERHEAT! This product boils at 44.7°C. Melting may take up to one week. When the material is liquid, it is ready for use.

  5. What is the stabilizer used in Product 227692, Sulfur trioxide?

    The manufacturer considers the identity of the stabilizer to be proprietary information.

  6. Why does Product 227692, Sulfur trioxide, contain a stabilizer?

    The stabilizer is present to facilitate melting, not to prevent polymerization.

  7. How is Product 227692, Sulfur trioxide, packaged?

    This product is packaged in a screw-capped glass bottle.

  8. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  9. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Direct sulfonation of methane to methanesulfonic acid by sulfur trioxide catalyzed by cerium (IV) sulfate in the presence of molecular oxygen.
Mukhopadhyay S and Bell AT
Advanced Synthesis & Catalysis, 346(8), 913-916 (2004)
Fluorinated ?-Sultones.
Knunyants IL & Sokolski GA
Angewandte Chemie (International Edition in English), 11(7), 583-595 null
Emissions of sulfur trioxide from coal-fired power plants.
Srivastava RK, et al.
Journal of the Air & Waste Management Association (1995), 54(6), 750-762 (2004)
Wei Liu et al.
Journal of agricultural and food chemistry, 58(1), 172-179 (2009-12-17)
The sulfation of psyllium was carried out with sulfur trioxide-pyridine in dimethyl formamide. Three sulfated psyllium derivatives, named SP1, SP2, and SP3, were characterized by sulfur content determination, elemental analysis, FT-IR, and surface charge analysis. The sulfated derivatives were also
T Kapias et al.
Journal of hazardous materials, 67(1), 9-40 (1999-05-20)
A new model describing the dispersion behaviour and the processes that occur in a cloud generated from accidental spills of SO3 and oleum has been developed. Such a cloud may initially behave as a dense gas, with several chemical and
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