Barium fluosilicate is an inorganic compound with chemical formula of BaFsixSi，It is a white crystalline powder, which is soluble in ammonium chloride solution, slightly soluble in water and dilute acid, and almost insoluble in ethanol. It is mainly used to manufacture silicon tetrafluoride, ceramics, and pesticides.[2]
Chinese name
Barium fluosilicate
Foreign name
barium hexafluorosilicate
Alias
barium hexafluorosilicate
chemical formula
BaFsixSi
molecular weight
two hundred and seventy-nine point four zero three
CAS login number
17125-80-3
EINECS login number
241-189-1
Melting point
300 ℃(Disassembly)
Water solubility
Slightly soluble
Density
4.29 g/cm³
Appearance
White crystalline powder
Security description
S28
Hazard symbol
Xn
Hazard description
R20/22
Solubility
Soluble in ammonium chloride solution, slightly soluble in water and dilute acid, almost insoluble in ethanol[1]
Reference value for drainage parameter calculation (XlogP): None
Number of hydrogen bond donors: 0
Number of hydrogen bond receptors: 24
Number of rotatable chemical bonds: 0
Number of tautomers: 0
Topological molecular polar surface area: 415
Number of heavy atoms: 39
Surface charge: 0
Complexity: 28.4
Number of isotope atoms: 0
Determine the number of atomic structure centers: 0
Number of uncertain atomic structure centers: 0
Determine the number of chemical bond structure centers: 0
Number of uncertain chemical bond structure centers: 0
Number of covalent bond units: 15[1]
toxicology data
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Acute toxicity: rat caliber LDfifty： 175mg/kg。[1]
purpose
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It is mainly used in the manufacture of silicon tetrafluoride, ceramics and pesticides.
Emergency Management
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Leakage emergency treatment
Wear gas mask and gloves.Collect with a clean shovel in a dry, clean and covered container and transport it to the waste disposal site.If there is a large amount of leakage, it shall be collected and recycled or discarded after harmless treatment.
Protective measures
Engineering control: the production process is closed and ventilation is strengthened.
Respiratory system protection: workers should wear masks.Wear gas mask if necessary.
Eye protection: wear chemical safety goggles.
Protective clothing: wear work clothes.
Hand protection: wear rubber gloves.
Others: Smoking, eating and drinking are prohibited at the work site.Keep good hygiene habits.
First aid measures
Skin contact: Take off the contaminated clothes and wash thoroughly with plenty of flowing water.
Eye contact: immediately open the upper and lower eyelids and wash with flowing branch water or physiological saline.Get medical attention.
Inhalation: quickly leave the site to a place with fresh air.Keep the respiratory tract unobstructed.Give oxygen when breathing is difficult.When breathing stops, perform artificial respiration immediately.Get medical attention.
Ingestion: Rinse your mouth immediately and drink milk or egg white.Get medical attention.
Fire fighting measures
Extinguishing agent: use water mist, dry powder, foam or carbon dioxide extinguishing agent to extinguish the fire.Avoid using direct water to extinguish the fire. Direct water may cause splashing of flammable liquid and spread the fire.
Precautions for fire extinguishing: firefighters must wear breathing apparatus and full body fire-fighting clothes to extinguish the fire in the upwind direction.Move the container from the fire site to an open place as far as possible.If the container in the fire site has changed color or sounds from the safety relief device, it must be evacuated immediately.Isolate the accident site and prohibit irrelevant personnel from entering.Receive and treat fire water to prevent environmental pollution.
Handling and storage
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Precautions for operation: operators shall be specially trained and strictly abide by the operating procedures.Operation and disposal shall be carried out in places with local ventilation or general ventilation facilities.Avoid eye and skin contact and inhalation of vapor.Keep away from kindling and heat sources. It is strictly prohibited to smoke and use explosion-proof ventilation systems and equipment in the workplace.If canning is required, the flow rate shall be controlled, and grounding device shall be provided to prevent electrostatic accumulation.Avoid contact with forbidden compounds such as oxidants.Load and unload gently during transportation to prevent damage to packaging and containers.Empty containers may leave harmful substances.Wash your hands after use, and do not eat or drink in the workplace.Fire fighting equipment and leakage emergency treatment equipment of corresponding types and quantities shall be provided.
Precautions for storage: store in a cool and ventilated warehouse.The storage temperature should not exceed 37 ° C.It shall be stored separately from oxidants and edible chemicals, and mixed storage is strictly prohibited.Keep container sealed.Keep away from kindling and heat sources.Lightning protection equipment must be installed in the warehouse.The exhaust system shall be equipped with a grounding device to conduct static electricity.Explosion proof lighting and ventilation shall be adopted.It is prohibited to use equipment and tools that are easy to generate sparks.The storage area shall be equipped with leakage emergency treatment equipment and appropriate materials.
security information
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Safety terminology
S28：After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer).
After skin contact, immediately use a large amount of(designated by the manufacturer).
