Sulphur Trioxide (SO₃) is a reactive, colourless to white crystalline compound that plays a critical role in the industrial production of sulphuric acid. It’s a highly versatile compound that is used in processes such as manufacturing, detergents, fertilisers, and chemical intermediates. While Sulphur Trioxide is a commonly used chemical, due to its highly reactive nature, handling and transportation require specialist knowledge and equipment.
| CAS Number: | 7446-11-9 |
| UN Number: | 1829 |
| Hazard Class: | 8 |
| Packing Group: | I |
What is the CAS Number of Sulphur Trioxide?
The CAS number of Sulphur Trioxide is 7446-11-9.
What is the UN Number of Sulphur Trioxide?
The UN number of Sulphur Trioxide is 1829.
What is the Hazard Class of Sulphur Trioxide?
Sulphur Trioxide is in Hazard Class 8.
What is the Packing Group of Sulphur Trioxide?
Sulphur Trioxide comes under Packing Group I.
Physical properties of Sulphur Trioxide
Physical State:
Liquid or crystals
Appearance:
Colourless to white
Odor:
Pungent
Odor Threshold:
No information available
pH:
No information available
Melting Point / Range:
No information available
Boiling Point / Range:
44.7 °C (112.5 °F) - lit.
Molecular Formula:
No information available
Molecular Weight:
No information available
Safety profile of Sulphur Trioxide
Sulphur Trioxide is highly hazardous and must be handled with extreme care. Please consult the Material Safety Data Sheet (MSDS) for detailed guidelines on first aid, fire safety measures, safe handling and storage practices, personal protection requirements and more.
Proper safety gear, including gloves, goggles, and respirators, is mandatory when working with Sulphur Trioxide. Always consult the MSDS before handling this substance.
FAQs
Sulphur Trioxide is used primarily in the production of sulphuric acid, a key ingredient in fertilisers, dyes, and petroleum refining. It’s also used as a sulfonating agent in detergents and organic synthesis processes.
The pricing of Sulphur Trioxide can vary depending on several factors, including order quantity, delivery destination, and market conditions. At East Harbour Group, we simplify the purchasing process by offering customised quotes tailored to your specific business requirements. This approach allows us to provide competitive pricing and streamlined logistics solutions.
Reach out to our team today for a bespoke quote that fits your operational needs and ensures efficient delivery.
Certainly; East Harbour Group specialises in global chemical logistics. With offices in key regions like the UK and India, we ensure reliable and timely delivery of Sulphur Trioxide to a range of destinations worldwide.
Sulphur Trioxide is a highly reactive and corrosive substance and comes with several hazard warnings. Key hazards include severe burns on contact, respiratory irritation from inhalation, and the potential for serious eye damage. The full list of H-Statements can be found below.
Eye Dam.: Serious eye damage.
H314: Causes severe skin burns and eye damage.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.
Skin Corr.: Skin corrosion.
STOT SE: Specific target organ toxicity — single exposure.
Sulphur Trioxide is stable under the right storage conditions. It should be kept in a container with the lid tightly closed, in a dry, well-ventilated place. Open containers must be carefully resealed and kept upright to prevent leakage. Sulphur Trioxide reacts violently with water, so special care must be taken to ensure contact doesn’t take place, either when using or when the product is in storage.
Handle in accordance with good industrial hygiene and safety practices. Wash hands before breaks and at the end of the workday. PPE must be worn at all times, including a full body suit and adequate respiratory protection.
Please consult the safety data sheet for the full list of hazard, storage and handling considerations before handling Sulphur Trioxide.
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