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Merck

227692

Sigma-Aldrich

三氧化硫

contains stabilizer, ≥99%

别名:

硫酸酐

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About This Item

线性分子式:
SO3
CAS号:
分子量:
80.06
EC號碼:
MDL號碼:
分類程式碼代碼:
12352300
PubChem物質ID:

蒸汽密度

2.8 (vs air)

蒸汽壓力

280 mmHg ( 25 °C)

化驗

≥99%

形狀

liquid

包含

stabilizer

反應適用性

reagent type: oxidant

雜質

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

bp

44.7 °C (lit.)

mp

16.8 °C (lit.)

密度

1.97 g/mL at 25 °C (lit.)

SMILES 字串

O=S(=O)=O

InChI

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

InChI 密鑰

AKEJUJNQAAGONA-UHFFFAOYSA-N

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一般說明

三氧化硫是硫的一种氧化物,在含硫燃料燃烧过程中释放出来。它可在钒催化剂存在下通过二氧化硫氧化制备。

應用

三氧化硫可用于通过磺化甲烷合成甲磺酸 (MSA),也可用于通过与氟烯烃反应合成氟化 β-砜。

象形圖

CorrosionExclamation mark

訊號詞

Danger

危險聲明

危險分類

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

標靶器官

Respiratory system

安全危害

儲存類別代碼

8B - Non-combustible corrosive hazardous materials

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Faceshields, Gloves, Goggles


分析证书(COA)

输入产品批号来搜索 分析证书(COA) 。批号可以在产品标签上"批“ (Lot或Batch)字后找到。

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  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.

Fluorinated ?-Sultones.
Knunyants IL & Sokolski GA
Angewandte Chemie (International Edition in English), 11(7), 583-595 null
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)
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)
Emilia Ivanova et al.
Journal of hazardous materials, 167(1-3), 306-312 (2009-02-10)
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 modification leads to a higher extent
Ri-sheng Yao et al.
Bioresource technology, 102(10), 6340-6343 (2011-03-12)
In this paper, a sulfur trioxide collaborative dilutes alkali method has been developed to pre-treat rice straw and it has been studied that the pre-treated rice straw structure affected the saccharification of the rice straw hydrolyzed by cellulose enzymatic hydrolysis.

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