Technical Papers
Need Technical Advice on Basildon's Silicone Products?
Please find below technical data on Basildon silicones, the many industries they are found in, and future initiatives that are being undertaken at Basildon Chemicals. See how we are making a difference. At Basildon Chemicals we are aware that the consumers of today are concerned about how the chemicals we use in our daily lives impact upon the environment. Two of the most critical issues in this debate are how these chemicals affect the environment and how persistent in the environment they will be. If you have any questions on Basildon Chemicals environmental standing, please contact us for more information. If the effect of 10 ppm is acceptable, the trial can be continued with lower levels of antifoam until a low level that still gives acceptable performance is found. The opposite of course can also be true for certain processes where more antifoam will be required to produce sufficient defoaming. (ppm silicone) x (Amount of Solution to be Defoamed 1) 1 In Litres
Basildon's Environmental Standing
Antifoam Addition Rate Calculation
Food and Pharmaceuticals Brochure
Personal Care and Cosmetics Brochure
Basildon Chemicals and the Environment
As a manufacturer and formulator, we at Basildon Chemicals are proud of the fact that the vast majority of our silicone products are non-hazardous in nature. During soil contact, the silicones in our products readily degrade via hydrolysis into inert silica, carbon dioxide and water thus minimising the environmental impact. In addition to this, many of our products, such as our high quality antifoams, can be used in such low concentrations to achieve the desired results that environmental impact is further minimised. This is supported by a number of studies that have concluded that the degradation of polydimethysiloxane fluid (silicone fluid) is ecologically inert and is just one of the reasons that silicones are so widely used in the markets of the world today. Choosing the Optimum Basildon Antifoam Concentration
For each foaming medium there will be an optimum concentration of antifoam addition that gives the required reduction of foam, without unacceptable cost, adverse effects, or exceeding the legal limits for your application.
The potency of the antifoam may be determined in the laboratory, in pilot scale, or in full scale production trials. From these the optimum rate can be determined.
A sensible starting point in any trials is an addition rate that corresponds to 10 ppm of the active polydimethylsiloxane. This is the upper limit allowed if the polydimethylsiloxane is being used as a 'food additive' in a foodstuff according to many of the major food regulations.
Please use the following calculation: = Antifoam to be Added1
(% Active Ingredient in Foam Control Agent 2) x (10,000)
2 Insert “10” for 10 percent active etc.
Please note that FDA regulations state that polydimethylsiloxane addition is not permitted in milk.
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