Sulphur Dioxide
From water to wine, float-glass to chemicals, sulphur dioxide is an integral part of our day to day lives with its ability to cover a massive range of applications. All filled at our purpose-built specialist facility, Blended offer sulphur dioxide in both liquid and vapour packages.
You can also call us to speak to one of our expert team who can help you select the best product on 01652 680555.
Related documents
Click to read and download our technical and safety data sheets for this product.
Product benefits
- Food grade 3.0 (99.9%)
- Total acids: Upper limit of 100 ppm w/w Residue on evaporation: Upper limit of 50 ppm w/w
- Other grades available upon request.
- Inhibits spoilage caused by microbes in food and beverages, extending the shelf life of products
- Is an antioxidant that prevents browning in food and beverages
Product applications
- Used as a chemical intermediate in the production of sulphuric acid
- Used in fumigation.
- Used as a preservative in food and beverages
- Used as a bleaching agent.
More information
Blended supplies high-purity sulphur dioxide (99.9% Food Grade 3.0) for use in food preservation, winemaking, fumigation, and chemical processing. Available in liquid and vapour form, it acts as an antioxidant and microbial inhibitor. Supplied from a specialist facility in 65kg cylinders, 1016kg drums, or bulk. Other grades available on request.
Natural refrigerant
| Parameter | Units | Lower limit | Upper limit |
| Sulphur Dioxide (SO₂) | % | 99.9 | 100 |
| Total Acids as Sulphuric Acid | ppm w/w | 0 | 100 |
| Residual Acid as Sulphuric Acid | ppm w/w | 0 | 50 |
| Residual Acid as Water | ppm w/w | 0 | 30 |
| Iron (Fe) | ppm w/w | 0 | 2 |
| Residue on Evaporation | ppm w/w | 0 | 50 |
| Antimony (Sb) | ppm w/w | 0 | 0.01 |
| Arsenic (As) | ppm w/w | 0 | 1 |
| Cadmium (Cd) | ppm w/w | 0 | 0.05 |
| Chromium (Cr) | ppm w/w | 0 | 0.01 |
| Copper (Cu) | ppm w/w | 0 | 0.1 |
| Lead (Pb) | ppm w/w | 0 | 0.5 |
| Manganese (Mn) | ppm w/w | 0 | 0.01 |
| Mercury (Hg) | ppm w/w | 0 | 0.01 |
| Nickel (Ni) | ppm w/w | 0 | 0.1 |
| Selenium (Se) | ppm w/w | 0 | 0.01 |
| Zinc (Zn) | ppm w/w | 0 | 0.1 |
| Total Heavy Metals as Lead | ppm w/w | 0 | 10 |
Typical physical properties
| Parameter | Conditions | Units | Typical values |
| Form | – | – | Gas |
| Colour | Colourless | ||
| Odour | Pungent | ||
| Boiling point | – | 0C | -10.05 |
| Melting point | – | oC | -75.5 |
| Vapour pressure | 20 0C | Pascals | 327000 |
| Density | 0 oC | g/ml | 1.43 |
| Solubility in water | 20 0C | g/l | 114 |
Related products
Anydrous Ammonia
Manufactured by way of the Haber process, ammonia is one of the most widely used chemicals on Earth and has always been a core product of Blended.
Carbon Dioxide
Filled at our purpose-built specialist facility, we offer carbon dioxide (R744) in both liquid and gas off-take cylinders.
Nitrogen
Nitrogen is an inert gas compatible with many common metals, making it ideal for pressure or leak testing.
Buying from Blended
Blended has become a recognised name for reliable and competitively priced specialist gas and chemical products. Working alongside national as well as globally recognised brands, Blended provide the highest levels of service and tailored solutions, offering a customer focused approach which is combined with expertise and professionalism. Find our more
What our customers say
“EJM have used Blended Products for over 15 years for virgin Ammonia and now with the addition of their Decant Service, cements our ongoing relationship.”
Paul Cable
Managing Director, EGM Systems Limited
“Blended Products have engaged actively with a number of BCGA committees and initiatives since joining in 2014 and we appreciate their ongoing contribution”
Doug Thornton
Former Chief Executive BCGA
“After using Thermablend TX, we found mixing much easier due to its very low viscosity. We didn’t even require the pump station to mix the rest of the system water”
Ben Barratt
The Smart Energy Group
Latest from our blog
Win the Ultimate Tool Kit with Blended Products at InstallerSHOW 2025!
Blended Products is excited to be exhibiting at this year’s InstallerSHOW, and to celebrate, we’re giving one lucky winner the chance to get their hands on the Rothenberger Ultimate Tool Kit – a must-have for any serious installer! Whether you’re attending the show at...
The UK’s top 10 favourite fizzy drinks!
From a chilled can of Coca-Cola to a nostalgic bottle of Irn-Bru, carbonated soft drinks remain a staple in British fridges. These fizzy favourites aren't just about flavour — it’s the bubbles that make them iconic. In 2023, Coca-Cola Original held its crown as the...
Top 3 Ground Source Heat Pumps for 2025 – And how to save £7,500
As the UK intensifies efforts to decarbonise home heating, ground source heat pumps (GSHPs) have emerged as a leading solution for energy-efficient, low-carbon warmth. With the government's Boiler Upgrade Scheme (BUS) now offering up to £7,500 towards installation,...