Fluorosilicic Acid
Fluoride Fluoropolymers Hydrofluoric Acid/Foaming Agent Fluoride Salt Fluorine-Containing

Fluorosilicic Acid

Duxiu Chemical

Specifications

HS Code

337945

Name Fluorosilicic Acid
Chemical Formula H2SiF6
Appearance Colorless to slightly yellow aqueous solution
Odor Pungent odor
Molar Mass 144.09 g/mol
Density 1.32 g/cm³ (20 °C, 40% solution)
Solubility Soluble in water
Ph Acidic, pH depends on concentration
Boiling Point 108.5 °C (decomposes)
Stability Stable under normal conditions but decomposes on heating
Corrosivity Corrosive to metals and many materials

As an accredited Fluorosilicic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

Packing & Storage
Packing Fluorosilicic acid packaged in 25 - kg plastic drums for secure storage and transport.
Storage Fluorosilicic acid should be stored in a cool, well - ventilated area away from heat and ignition sources. It must be stored in corrosion - resistant containers, typically made of polyethylene or other suitable plastics. Keep it separate from reactive substances like alkalis. Label containers clearly, and ensure storage facilities comply with safety regulations to prevent leakage and environmental or safety hazards.
Shipping Fluorosilicic acid is shipped in specialized, corrosion - resistant containers. Due to its acidic and potentially hazardous nature, strict regulations govern its transport, ensuring safety during handling and transit.
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Fluorosilicic Acid
General Information
Historical Development
Have a taste of the products of Fluorosilicic Acid, and its historical development has its roots. In the past, chemistry was just emerging, and people were gradually exploring matter. At that time, the understanding of Fluorosilicic Acid was still shallow, and only a few or two of its characteristics were known.
And the evolution of science and technology, all kinds of research are becoming more and more prosperous. Scholars study carefully, and only then can they understand the principle of its formation and the wonder of its nature. In the industrial field, there is a way to apply it, and its uniqueness helps production.
With the passage of time and the advancement of craftsmanship, Fluorosilicic Acid products are more widely used. They have played an effective role in many aspects such as construction and materials. In the process of historical development, they have left a unique track and promoted the transformation and progress of related industries.
Product Overview
Fluorosilicic Acid Products Overview
Fluorosilicic acid is a chemical product. It has the characteristics of acid, is a colorless and transparent liquid, and is corrosive. This product is mostly derived from industrial processes such as phosphate rock processing.
In the industrial field, it has a wide range of uses. In glass etching, it can help it form a fine pattern; in the electroplating industry, it can optimize the state of metal surfaces. It can also be used as a wood preservative to protect wood from corrosion for a long time. It is also an important raw material in the production of fluoride.
However, this material is dangerous to a certain extent, and it must be carefully protected during operation. When storing, it should be stored in a cool and ventilated place, away from fire and heat sources. During transportation, it is also necessary to follow relevant regulations to ensure safety. In conclusion, fluorosilicic acid is important in industry, and safety is the only thing that should be used.
Physical & Chemical Properties
"On the Physical Properties of Fluorosilicic Acid"
Fluorosilicic acid is also a chemical substance. Its properties are acid-like, clear in color and sour in taste, and corrosive. Under normal conditions, it is a liquid, which can be miscible with water, and can dissociate ions after dissolution.
Its physical properties, at room temperature and pressure, show a flowing state, and the boiling point and melting point vary depending on the concentration. The density is heavier than water, and the appearance is clear.
In terms of chemical properties, fluorosilicic acid is active, and can neutralize with bases to form salts and water. In case of active metals, a displacement reaction can occur, releasing hydrogen gas. And it has the ability to dissolve a variety of minerals. In the chemical industry, it is often used as an etchant, preservative, etc. It has a wide range of uses and is actually an important class of chemical substances.
Technical Specifications & Labeling
"On the Technical Specifications and Labeling of Fluorosilicic Acid Products"
The technical specifications of the fluorosilicic acid products are related to the production method, and the proportion of materials and purification steps are fixed. The production needs to follow a precise process to ensure that the ingredients are pure and stable.
Labeling is also key. The content of the ingredients should be specified, the proportion of fluorosilicic acid is geometric, and the number of impurities must be clear. And indicate the physical properties, such as color, smell, and form. Additional chemical properties, reaction conditions, stability, etc. In this way, the user can understand its characteristics, and it can be used in industry and agriculture in accordance with regulations without error, so as to ensure the quality of the product and the safety of use.
Preparation Method
"The Method of Making Fluorosilicic Acid"
To make fluorosilicic acid, the raw materials and process are essential. Fluorite and sulfuric acid are collected in an appropriate ratio and placed in a special utensil. The two are combined in phase, starting to react slightly and gradually becoming violent. When reacting, pay attention to temperature control to prevent damage caused by excessive intensity.
In the reaction step, first break the fluorite into small pieces, put it in a kettle, and slowly inject sulfuric acid. The corresponding formula: CaF2 + H2SO → CaSO + 2HF, the generated hydrogen fluoride gas is combined with silica, 2HF + SiO2 → H2SiF.
As for the purification mechanism, by distillation, its impurities are removed to make fluorosilicic acid pure and usable. In this way, a good quality fluorosilicic acid product can be obtained.
Chemical Reactions & Modifications
On the Chemical Reaction and Modification of Fluorosilicic Acid
Its properties are unique, and between reactions, there are many changes. Encounter various things, or generate new substances, or change their properties. If combined with alkali, it will neutralize and form salts and water. This is a common chemical reaction.
If you want to change its properties, there are also ways. Or change its temperature, or adjust its concentration, you can change the properties of fluorosilicic acid. After modification, it has a wide range of benefits. It can help industry, improve the quality of the product, and increase its efficiency. Although this was not said in detail in ancient times, the principle of chemistry is the same in ancient and modern times. The reaction and modification of fluorosilicic acid are of great benefit in today's world.
Synonyms & Product Names
"Synonyms and Product Names of Fluorosilicic Acid"
Fluorosilicic acid, also known as silicone fluoric acid, has many synonymous names. This substance is widely used in the field of chemical industry.
Fluorosilicic acid, English is "Fluorosilicic Acid", common synonymous names include hexafluorosilicic acid, etc. Its trade names are also different due to differences in origin and use. In industrial production, although fluorosilicic acid made by different manufacturers is essentially the same, the trade names may also be different. Either due to purification process or due to application emphasis, its trade names are unique. This is all well known in the industry. To clarify its details, it is necessary to carefully examine various classics and production records to obtain the full picture. Only when applying it can it be accurate and avoid confusion.
Safety & Operational Standards
Specifications for the safety and operation of fluorosilicic acid products
Fluorosilicic acid is also a chemical preparation. Its unique properties are related to the safety of use and the rules of operation, which cannot be ignored.
The way to safety, the first storage. When choosing a cool, dry and well-ventilated place, avoid fire and heat sources. The device must be sealed to prevent leakage from the outside. If it comes into contact with the air, it may cause harmful gases to escape, endangering the surroundings. In case of high temperature, fluorosilicic acid may change violently, so the control of temperature and humidity is crucial.
When operating, be sure to follow the specifications. Operators must be professionally trained to understand its nature and danger. When starting, protective equipment is indispensable, such as protective clothing, gloves and goggles, to protect against the risk of skin rot and eye damage. The operation room should be well ventilated and equipped with a ventilation device to remove harmful gas.
Once there is a risk of leakage, immediately initiate emergency measures. Isolate the scene and prohibit unrelated persons from entering. Emergency personnel should be professionally protected and take corresponding measures according to the state of leakage. Small leaks should be sucked up with sand, vermiculite, etc.; large leaks should be blocked by embankments and then disposed of properly.
Furthermore, the principle of waste should also be followed. It should not be discarded at will, and it must be disposed of by qualified persons in accordance with the regulations of chemical waste disposal to ensure the safety of the environment.
All of these are regulations for the safety and operation of fluorosilicate products. Practitioners should keep it in mind and keep it unswervingly to avoid disasters and ensure people's safety.
Application Area
"Application of Fluorosilicic Acid"
Fluorosilicic acid is also a chemical preparation. Its application field is quite wide. In industry, it is often an etching agent, which helps the art of glass carving, making the glass fine texture and unique charm. It is also used for metal surface treatment to help it resist corrosion and wear, and be durable.
In agriculture, it can make fluorinated fertilizers, nourish soil, help crops grow, and increase their yield. And in water quality treatment, it is also wonderfully useful, which can adjust the hardness of water, remove impurities, and keep water clear.
As for the rubber industry, fluorosilicic acid can be used as a vulcanization active agent to optimize the properties of rubber, making it tough and elastic. This is the application field of fluorosilicic acid, each of which can be applied to various industries.
Research & Development
Since modern times, the research and development of fluorosilicic acid (Fluorosilicic Acid) has been related to many fields. At the beginning of the research, many people did not know its characteristics, but only a little glimpse. However, through the unremitting research of various sages, its chemical properties, preparation methods, etc., have gradually gained.
At first, the preparation was difficult, and the yield was meager. After repeated tests, the process was improved, and the yield increased. And in terms of application, it has also been continuously expanded. In industry, it can help production; in agriculture, it is beneficial to fertilizer efficiency. Today, the research and development of fluorosilicic acid products has not stopped. The efforts of various scholars have made it increasingly perfect and used by the world. The prospect is broad, and it will be able to shine in more fields in the future.
Toxicity Research
Study on the toxicity of fluorosilicic acid
In modern times, there is a thing called fluorosilicic acid, which is quite useful in industry. However, its toxicity cannot be ignored.
Taste a craftsman, and work in the industry of fluorosilicic acid in the factory. If you don't feel strange at first, you will be tired for a long time, your hair will gradually fall out, and your teeth will also be loose. To investigate the cause, it is the poison of fluorosilicic acid that enters the body.
Another guinea pig was tried, and it was fed with fluorosilicic acid. Not long after, the guinea pig's fur lost its luster, its movement was slow, and its organs were abnormal.
Research shows that fluorosilicic acid is strong, and it can enter the body through breathing and contact. In the lungs, it damages its function; in the bones, it causes Therefore, those who are in this industry should strictly protect themselves and do not allow poison to invade the body in order to ensure their well-being. This is an important rule that the industry cannot ignore.
Future Prospects
In the future, the prospect of Fluorosilicic Acid products is like the beginning of the morning, and the future is similar. In the field of work, it is more and more important. In the field of material improvement, it can help improve efficiency and make refined things useful. And the way to guarantee, there may be new ones, with its characteristics to help the management and transformation of materials. In addition, the development of science and technology, Fluorosilicic Acid or the introduction of new research, giving rise to unprecedented uses, such as the synthesis of new materials, expanding the new field of work. Its unprecedented use will be like a rush to the frontier of business and technology.
Where to Buy Fluorosilicic Acid in China?
As a trusted Fluorosilicic Acid manufacturer, we deliver: Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements. Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery. Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
Frequently Asked Questions

As a leading Fluorosilicic Acid supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.

What are the Uses of Fluorosilicic Acid?
Fluorosilicic acid has a wide range of uses. First, in the art of glass etching, it can make the surface of the glass have a delicate texture or a hazy state, just like the ancient glaze, which has been carved by craftsmen and is beautiful. Second, in the industry of metal surface treatment, it can form a protective film on the metal surface, which seems to be covered with armor, so as to resist corrosion and be durable. Furthermore, in the process of cement hardening, it can promote its rapid setting and enhance its solidity, such as ramming the foundation, which is as stable as a rock. And in the firing of some special ceramics, fluorosilicic acid can also adjust its texture and color, making the ceramics glow with a unique brilliance, just like the treasures of ancient kilns, radiant and charming. In the field of water treatment, appropriate use can remove impurities in the water, clarify the water, and ensure the net use of water for people's livelihood. In addition, when agricultural soil is improved, fluorosilicic acid can fine-tune the soil pH and help crop roots thrive, such as fertile soil for seedlings and vitality.
What should be paid attention to when storing Fluorosilicic Acids?
Fluorosilicic acid is corrosive in nature. When storing it, you must pay attention to many matters. The first thing to do is to find a suitable place, which should be dry and cool, and avoid direct sunlight. Due to sunlight exposure, the nature of acid may change, which will damage its quality. And keep away from fire and heat sources to prevent accidents. Fire and heat or chemical reactions may cause danger. Furthermore, the utensils containing fluorosilicic acid must be made of corrosion-resistant materials. For example, glass utensils, although often used for storage, are not suitable for fluorosilicic acid because of their fluorine content, which can react with certain components in the glass. It should be filled with special plastic containers or metal containers lined with anti-corrosive materials to ensure that the containers are tight and leak-free, prevent acid gas from escaping, injure people and pollute the environment. In addition, in the storage place, when preparing corresponding protective equipment and emergency products. Such as protective clothing, gloves, masks, etc., in case of inadvertent contact, they can be protected quickly. And should be familiar with emergency treatment methods. If there is a leak, quickly neutralize it with alkaline substances such as lime, and then properly clean it up, so as not to cause greater harm to the dispersion. In addition, the storage place should be well ventilated to avoid acid gas accumulation. Always check the state of the container, whether there is any damage or leakage, and if there is any abnormality, dispose of it quickly. So pay attention to all things, and keep fluorosilicic acid safe for storage.
What are the Physical and Chemical Properties of Fluorosilicic Acid?
Fluorosilicic acid is an important chemical substance. Its physical and chemical properties are particularly impressive. In terms of its physical properties, fluorosilicic acid is mostly a colorless and transparent liquid under normal conditions, which is highly corrosive, and the skin is easily damaged when touched. And this liquid has a pungent smell, which is uncomfortable to smell. Its density is larger than that of ordinary water, and it can be observed in a container. As for its chemical properties, fluorosilicic acid is acidic and highly acidic. In chemical reactions, it can often show a lively state. It can react with many metals and their oxides, which is its remarkable characteristic. In case of alkali substances, it can also neutralize and react to generate corresponding salts and water. Due to its fluorine content, fluorosilicic acid also plays an important role in some reactions involving fluoride formation. In many industrial processes, such as glass etching, metal surface treatment, etc., fluorosilicic acid plays an indispensable role due to its unique physical and chemical properties.
Effects of Fluorosilicic Acids on Human Health
Fluorosilicic acid is corrosive in nature and has a serious impact on human health. It enters the body through the respiratory tract, which can cause swelling and pain in the throat, cough, acute qi and other diseases, and even cause pulmonary edema, endangering life. If it comes into contact with the skin, it will burn the skin, cause erythema, blisters, improper treatment or leave scars. If it is not careful to enter the eyes, it will cause serious damage to the eyes, causing severe eye pain, tears, vision loss, and even blindness. If you ingest fluorosilicic acid by mistake, it can harm the digestive tract, causing nausea, vomiting, abdominal pain, diarrhea and other diseases. In severe cases, it can damage the liver, kidneys and other organ functions. Long-term exposure to fluorosilicic acid-containing environment, fluoride accumulates in the body, can cause fluorosis, bone pain, deformation, affect joint activities, and reduce quality of life. It can also cause fluorosis, damage the appearance and health of teeth. Therefore, in the case of fluorosilicic acid, strict safety procedures should be followed to protect the human body from its harm.
What are the Production Methods of Fluorosilicic Acid
The method of making fluorosilicic acid covers all kinds of things. One method is obtained from the waste gas of the phosphate fertilizer industry. During the production of phosphate fertilizer, phosphate rock interacts with sulfuric acid, during which fluorine elements mostly escape in the form of silicon tetrafluoride. If this silicon tetrafluoride gas encounters water vapor, it converts into fluorosilicic acid, and its gas enters water and becomes this acid. This is a common way. Another method can be obtained by the reaction of hydrofluoric acid and silicon dioxide. Hydrofluoric acid is highly corrosive. When it meets silicon dioxide, the two combine to produce fluorosilicic acid. However, hydrofluoric acid is not easy to produce and is highly toxic. Therefore, this method is slightly less used in industry and is mostly used in experimental scenes. In addition, fluorosilicate can be formed by reacting with strong acid. Take an appropriate amount of fluorosilicate, put it in strong acid, and after chemical reaction, fluorosilicate is produced. This process requires controlling the reaction conditions, such as temperature, concentration, etc., to ensure the purity and yield of the product. This method has its own advantages and disadvantages. In industrial production, it is often chosen according to the availability of raw materials, the cost, and the difficulty of the process. In order to obtain the required fluorosilicate acid.