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agriculture use sodium silicate soluble glass water glass soluble silicate

Categories Sodium Silicate
Brand Name: KP
Place of Origin: SC, CHINA
MOQ: 5MT
Price: Negotiable
Payment Terms: T/T, L/C
Supply Ability: 1500 ton per month
Delivery Time: 7-15days after received deposit
Packaging Details: 50kg/bag
Color: white
Appearance: Powder or granular
CAS: 16893-85-9
Molcular formula:: Na2SiF6
product name: sodium silicate
other name: water glass
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    agriculture use sodium silicate soluble glass water glass soluble silicate

    Uses of sodium silicate fluoride powder is make as insecticide and material of opal glass


    ►Description


    Properties

    Chemical formula

    Na2[SiF6]

    Molar mass

    188 g/mol

    Appearance

    white granular powder

    Odor

    odorless

    Density

    2.68 g/cm3
    Solubility in water0.64 g/100 mL (20 °C)
    1.27 g/100 mL (50 °C)
    2.45 g/100 mL (100 °C)

    Solubility

    insoluble in alcohol

    Refractive index (nD)

    1.312
    Structure

    Crystal structure

    hexagonal
    Hazards
    Lethal dose or concentration (LD, LC):
    LDLo (lowest published)

    70 mg/kg (mouse, oral)


    125 mg/kg (rabbit, oral)


    Sodium fluorosilicate appears as white crystal, crystalline powder or colorless


    hexagonal crystals. It is odorless and tasteless. Its relative density is 2.68;


    it has moisture absorption capability. It can be dissolved in a solvent such as ethyl


    ether but insoluble in alcohol. The solubility in acid is greater than that in water.


    It can be decomposed in alkaline solution, generating sodium fluoride and silica.


    After searing (300 ℃), it is decomposed into sodium fluoride and silicon


    tetrafluoride. It is poisonous!

    In 25 degrees, the sodium fluorosilicate has its water solubility being 0.78%.


    Upon production, addition of an excess amount of sodium sulfate or sodium


    chloride can increase the concentration of sodium ions in the system, thereby


    increasing the solubility product of fluorine silicate and sodium ions, so that sodium


    fluoride can be subject to more complete precipitation. 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. Reduction of the acidicity of the solution facilitates the hydrolysis


    of sodium fluorosilicate. 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.

    Specification

    Na2Si6ItemSpecification
    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%

    ►Toxicity

    This product is toxic with stimulation effect on the respiratory organ. People of


    mistakenly oral poisoning will get severe symptoms of damage to the


    gastrointestinal tract with the lethal dose being 0.4~4g. During the working of the


    operator, they should wear the necessary protective equipment to prevent


    poisoning. Production equipment should be sealed and the workshop should be


    well ventilated.

    Packing of sodium silicate:


    Application

    Sodium fluorosilicate can be used as:

    1. The insecticide in agriculture.

    2. Opal glass

    ►Storage characteristics


    Treasury: ventilation, low-temperature and drying; store it separately from food and


    acid.

    Quality agriculture use sodium silicate soluble glass water glass soluble silicate for sale
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