Innovox® is the World’s #1 moisture control for rubber. We use high-quality calcium oxide to eliminate porosity, visible specks and surface blisters in your rubber and polymer compounds. It disperses quickly and evenly for superior cross-link density, higher strength and acid scavenging.

Innovox® delivers exceptional product performance and is proven by independent testers to require 20% less product than granule alternatives. Another industry-leading solution from Birch Chemicals.

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Packed In
1kg - 1000kg
Density (g/cm3)
Processing Temp.
Melt Flow Rate
Melting Point
Made In
United Kingdom

  • Innovox® 95 – the premier Innovox product, made in the UK
  • Innovox® 95 F – for food contact applications
  • Innovox® FG – no surface treatment
  • Car Door Seals
  • Rubber Hoses
  • Conveyer Belts
  • Gym Floorings
  • Rubber Toys
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  • Automotive seals & hoses
  • EV Vehicles
  • Conveyer Belts
  • Gym Floorings
  • Rubber Toys

The Innovox® difference

The Innovox® range has been fully tested and qualified by leading Artis and Ace Laboratories and proven to prevent visible extrusion breakout and surface defects, reducing specks, lumps and streaking in production caused by unwanted moisture in the finished product. Compare the difference by using the slider below.

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Dispersion within rubber with or without Innovox®
Without Innovox® (left), Creates damaging bubbles within the compound.
With Innovox® (right), No bubble or moisture damage.

On site = speed

Our raw materials are produced and refined on site, allowing us to deliver the unbeatable quality and rapid lead times our customers expect.

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Industry-leading solutions

Birch Chemicals provides industry-leading high quality products based on decades of expertise and developed from an ethos of constant innovation.

Helpful FAQs

Frequently Asked Questions


There are no problems with using Innovox in combination with either magnesium oxide or calcium carbonate. If you would like advice on either, please contact us.

Innovox is usually supplied in weight defined EVA low melt sachets, e.g. 1kg. These are ideal for use with a Banbury type mixer. For open mill mixers, Innovox can be supplied as a powder or as Innovox MG MicroGranules. If you would like information on product choice please get in touch.

Yes, we can. Innovox MG MicroGranules can be used as a direct replacement for Kezadol, Rhenogran or other desiccant granules. Ask your distributor for details or please contact us.

Yes, Innovox is used by many other compounders worldwide. Ask us if you require details of reference customers.

Innovox can replace powder or granules as a direct 1:1 and will perform better in both cases. If you are using granules, you can use 20% less Innovox and still achieve better results. Innovox is 100% calcium oxide powder whereas granules are approximately 80% calcium oxide powder. Ask to see our test reports or contact us for advice.

We have conducted extensive testing on Innovox with external laboratories (such as Artis and ACE Consultants) and can supply test reports on request. We can also provide reference customer details within your own field of application. Ask to see our test reports or contact us for advice.

Calcium oxide is classified as a Generally Recognized As Safe (GRAS) substance by the FDA. Innovox FG is 100% calcium oxide powder. As a calcium oxide powder combined with food contact approved dispersion additives, Innovox 95F is suitable for food contact applications.

Innovox is mainly used in sulphur cured systems including EPDM, although it is suitable for most applications where there is an issue with moisture or acidity. Please contact us for recommendations regarding your proposed use.

Innovox is usually supplied in weight defined EVA low melt sachets, e.g. 1kg. We do offer several other sizes and can also make special or bespoke packs. Ask your distributor for further details or please contact us.

Addition level will depend on the moisture levels within your compound. In practice, the typical dose rate for Innovox FG or 95 would be around 5 phr. If you would like further advice on addition levels, please contact us.

Typically, Innovox is added at the start of the mixing process. For high humidity environments, moisture may often be absorbed if compound is stored – to overcome this, Innovox can be added near the final mix. If you require advice on addition points, please contact us.

Innovox is made from calcium oxide produced in our own lime kilns on site in the UK. Search for Melton Ross in your web browser and you can access a satellite view of our site. For further information, please contact us.

Leading compounders have found that when switching to Innovox they produce better quality compound with greater consistency and fewer scrap or quality control rejects. More compounders are recognising the Innovox advantage and specify Innovox in all new and existing formulations.


Our customers say it best...

  • "In the past we have had a lack of consistency with product quality and have been let down with deliveries affecting our production schedule. This is a thing of the past with Birch Chemicals. They offer flexibility and adapt to our needs to deliver an outstanding service as well as a product that is competitively priced with consistency in product quality. Their responsiveness to our operation is why we use Birch Chemicals!"

    Jake Goodwin at IPL

  • "Awesome caring company. They present the true definition of sustainability in all their endeavours."

    Richard Dee

  • "It is a pleasure to work alongside our key supplier Birch Chemicals. Their market leading expertise in the rubber industry help us to serve our valued customers to the best of our ability."

    Gokhan San at Univar Solutions


Global product, worldwide support

We work with our specialist distribution partners to offer unparalleled service and supply globally, whatever your requirement. If you want to talk rubber or plastics, coatings or adhesives just get in touch. Our distributors can speak your language - literally.

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