Packaging & Delivery
♦ Specification
Na2Si6 | Item | Specification |
Na2SiF6 | ≥99% | |
Fe | ≤0.02% | |
Loss of Weight on drying at 105°C | ≤0.40% | |
Insoluble in Water | ≤0.50% | |
Free Acid(HCL) | ≤0.15% | |
Heavy Metal(Pb) | ≤0.05% |
♦ Description
Sodium fluorosilicate is the byproduct in the production of calcium phosphate or
the production of fluoride salt in aluminum factory.
It generally appears as a white crystalline powder with low solubility in water
(being 1% or less at room temperature), and the water solubility increases slightly
with increasing temperature.
The aqueous solution of sodium fluorosilicate is acidic (pH3). This is due to that
its hydrolysis product contains hydrofluoric acid.
When pH is lower than 3.5-3.55, the hydrolysis reaction is stabilized. When
the pH is equal to 4, the hydrolysis reaction rate is significant. When the pH value is
equal to 8-8.5, the sodium fluorosilicate can be completely hydrolyzed to exhibit as
silica gel and precipitated out.
Therefore, when sodium fluorosilicate is added to the water glass, in addition
to hardening effect of precipitation of silicon dioxide gel caused by the neutralization
of the sodium hydroxide in the solution of water glass, the sodium fluorosilicate
itself is also a source of silica gel.
♦ Eference quality standards
105 ℃ Loss of weight upon drying% 0.17%
Sodium fluorosilicate (based on dry mass) 99.50
Free acid (calculated based on HCL) 0.0075
Water insoluble matter 0.12%
Heavy metals (Pb) content% <0.02
♦ Application
1. Industry , additives in cement in building .
2. Agriculture , insecticide .
♦ Packing
50kg /plastic bag ,or customized. 25MT/20'FCL
♦ MOQ
1-20 ton
♦ Storage characteristics
Treasury ,ventilation, low-temperature and drying; store it separately from food and
acid.
Company Information
Shanghai Yixin Chemical Co.,Ltd.
Since it is established in 1998 ,Shanghai Yixin Chemical Co.,Ltd. has become a reliable supplier in the field of chemical industry .
Currently ,overseas business of our company is composed of two parts basic inorganic raw chemicals and fine chemicals .
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We also sell inorganic chemicals like as following
Sodium Nitrate,Sodium Carbonate,Lithium Carbonate ,
Sodium Hydroxide,Cerium Oxide ,Cobalt Oxide ,
Potassium Borofluoride ,Sodium fluoroaluminate
ZnO Oxide, Potassium fluorosilicate,Aluminium Oxide
We aim to build a worldwide business ,to provide reliable quality chemicals at competitive price for your needs .we will listen to what do you want and endeavor to achieve it .
Looking forwarding to providing you high quantity products and warmly service .
Why choose us
Business TypeCountry / Region
Company Features 1. Shanghai Yixin Chemical Co., Ltd. has become one of the most competitive companies that boast years of experience and expertise in developing and producing . 2. Our technology takes the lead in the industry of sodium magnesium fluorosilicate . 3. Yixin will boost its global fluency in the sodium lithium magnesium fluorosilicate market. Contact us! The quality of Yixin is recognized. Many chemical and optical properties were examined in our test lab.
From design to fabric finishing and manufacture, the development of Yixin focuses on detail, making it sustainably designed as well as durable and beautiful.
The design of Yixin involves many considerations. They include the fabrication process, assembly precisions, the need for post-processing, and the overall aesthetics.
The packaging quality is important for Yixin . Its packaging materials comply with EU packaging materials and waste directive for the battery.
Yixin complies with all kinds of certifications. They may include CE certificate, UL certificate, CCC certificate, and CB certificate.
This product has marketing capabilities. It allows delivering information about the packaged items. The information can be instructions, functions, etc.
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