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    Zinc Borate
    Product name: Zinc Borate
    Description: As environmental-friendly flame retardant, Zinc Borate is a good synergist and substitute of Antimony Trioxide and other flame retardant, and is used in milk glass, ceramic glaze, painting, fungicide of wood composite etc. “Development derive from creativity”, we highlight attention on R & D, effort to perfect series products.
    Chemical structure formula:
    CAS No: 1332-07-6 Molecular formula: 2ZnO .3 B2O3. 3.5H2O Molecular weight: 434.62
    Specifications:

    Grade / Item 

    Zinc borate 2335 ( 2ZnO .3 B2O3 . 3.5H2O )

    Top grade

    First grade

    Whiteness

    99

    95

    Surface water, %, ≤ 

    0.5

    1.0

    Size,  um 

    1-3

    1-3

    Pb, PPM   ≤

    10

    Cd, PPM   ≤

    5

    ZnO,   % 

    37.0-40.0

    B2O3 ,   % 

    45.0-48.0

    Loss on ignition, % 

    13. 0 -15.5

    Fineness(325 Sieve residue), %    ≤ 

    0.1

    Specific Gravity,   g/cm3

    2.67

    Melting point, ℃ 

    980

    Temp. of dehydration, ℃  >

    290

    Refractive index

    1.58
    Uses: 1. Zinc Borate is one multi-functional synergistic flame retardant with Antimony Oxide etc. additives in polymers to improve flame retardant performance 
    2. it is widely used in PVC applications such as carpet, conveyor belt, wire and cable, and in Nylon, PE, PP etc. engineering plastics of halogen free flame retardant systems based on Al(OH)3 and Mg(OH)3, intumescent coating and painting, ceramic glaze, milk glass, decorative paper etc. fields. 
    3. It is also used in wood composite as fungicide to prevent from decay fungi and subterranean termites.ZB200 grade's particle size is the smallest, it is recommended to wire and cable applications that need much fine particle size fields.
    Packaging and storage:

    common chemicals, Stored in a cool, ventilated and dry environment. 25kg/bag, or following your demands.
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