Fluosilicic Acid (FSA)

Fluorosilicic Acid, Hexafluorosilicic Acid, Fluosilicic Acid or FSA is also an involuntary byproduct of the phosphoric acid industry that is normally being neutralized and disposed with the phosphogypsum or in a dedicated area.


FSA can be of a very beneficial use, it can be used in water fluoridation a normal practice in water treatment industry, it can be also used in the manufacturing of Sodium Fluoride or Aluminium Fluoride which both are used in Aluminium industry to decrease the melting point of Aluminium ore.


FSA can be also a source of active silica which is a valuable product that can be used in the phosphoric acid industry itself to neutralize the highly corrosive Hydrofluoric Acid (HF), it can be also used in many other industries.


WAPHCO is considering many options for the best use of the same and working from day one to get the most out of this resource.

Send us a message

Submitting Form...

The server encountered an error.

Form received.

This Website has been created in good faith to provide accurate and authoritative information regarding the subject matter covered. Because of the constantly changing nature of the Project, guaranteeing absolute accuracy of the information covered on this site is impossible. The copyright on the materials and information on this Website belongs to, and remains with WAPHCO. All rights are reserved. Access to this information does not imply a right to reproduce or distribute this material without prior consent from WAPHCO. © 2019. At certain places on this site, live "links" to other Websites can be accessed. Such external sites contain information created, published, maintained, or otherwise posted by institutions or organizations independent of WAPHCO. WAPHCO does not endorse, approve, certify, or control these external sites and does not guarantee the accuracy, completeness, efficacy, or timeliness of information located at such sites. Use of any information obtained from such sites is voluntary, and reliance on it should only be undertaken after an independent review by qualified experts. WAPHCO assumes no responsibility for consequences resulting from use of the information contained herein, or from use of the information obtained at linked sites, or in any respect for the content of such information. WAPHCO is not responsible for, and expressly disclaims all liability for, damages of any kind arising out of use, reference to, reliance on, or performance of such information.