Product

Zinc Borate Application

Zinc Borate has been used extensively in flexible PVC as a partial replacement for antimony oxide, such as wall coverings, wire and cables, roofing membranes, conveyor belts, carpet backing, auto upholstery, and tenting materials. In contrast to antimony trioxide, this material has a refractive index similar to that of most polymer systems, which allows the use of lower pigment loading.

Zinc Borate has been used as a fire retardant in polyolefin wire & cables, as well as electrical parts. In halogen-containing systems, Zinc Borate is used in conjunction with antimony oxide, while in halogen-free systems, it is normally used in conjunction with alumina trihydrate, magnesium hydroxide, or red phosphorus. It should be noted that the use of Zinc Borate can also improve elongation properties of polyolefins.

Zinc Borates with different chemical compositions that provide flame retardant properties
and improved resistance against electrical degradation processes in many flame retardant polyamides. The combination of zinc and borate moieties provides unique functionalities. Zinc Borate also perform as synergists with brominated flame retardants to tailor FR properties and CTI. These combinations have also been shown to increase melt stability, and can be used in regrinding processes without a reduction in the original CTI values.

Zinc Borate has been used extensively as a fire retardant in elastomers
for applications such as conveyor belting, wire & cables, roofing membranes, flooring material, and foamed insulation products.

Zinc Borate is a flame retardant synergist of halogen sources such as chlorinated resins, decabromodiphenyl oxide, and tetrabromobisphenol-A. Depending on the halogen source used, Zinc Borate can either partially or completely replace antimony oxide. Zinc Borate has been used extensively as a fire retardant in epoxies for applications such as intumescent coatings, glass-reinforced laminates, and encapsulation of electrical components.

PRODUCT IDENTIFICATION
CAS NO. : 1332-07-6, 138265-88-0, 149749-62-2
EINECS NO. : 215-566-6
FORMULA : 2ZnO.3B2O3.3.5H2O
MOL WT. : 434.62
TOXICITY : Oral rat LD50; 10000 mg/kg
SYNONYMS : Boric acid, zinc salt; Borsäure, Zinksalz (German);

 

SALES SPECIFICATION
APPEARANCE : White crystalline powder
ZnO : 36.0% – 39.0%
B2O3 : 46.5% – 49.5%
WATER : 0.5% max
RESIDUE ON IGNITION : 0.5% max
PARTICLE SIZE : 8-20 um (mean)
TRANSPORTATION
PACKING : 40kgs in bag
HAZARD CLASS : Not regulted
UN NO. : Not regulated

 
 

PRODUCT IDENTIFICATION
CAS NO. : 1332-07-6, 138265-88-0, 149749-62-2
EINECS NO. : 215-566-6
FORMULA : 2ZnO.3B2O3.3.5H2O
MOL WT. : 434.62
TOXICITY : Oral rat LD50; 10000 mg/kg
SYNONYMS : Boric acid, zinc salt; Borsäure, Zinksalz (German);

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE : White crystalline powder
SOLUBILITY IN WATER : Insoluble
pH : 7.6
STABILITY : Stable under ordinary conditions
Specific Gravity : 2.7
Melting Point : 650C/1202F
FLASH POINT : Not considered to be a fire hazard
Solubility in Water : <0.28% @25C

 

PRECOUTIONS FOR SAFE
Steps to Be Taken in Case Material Is Released or Spilled:
Not applicable for products in purchased form. Wood dust generated from sawing, sanding, drilling, or routing of these products may be vacuumed or shoveled for recovery or disposal. Avoid dusty conditions and provide good ventilation. Use NIOSH/MSHA-approved respirator and goggles where ventilation is not possible and the allowable exposure limits may be exceeded.
Precautions to Be Taken in Handling and Storage:
No special handling precautions are required for products in purchased form. Avoid repeated or prolonged breathing of wood dust. Products with 100% MDI adhesive release no formaldehyde and have no measurable uncured isocyanate monomer. Store in well-ventilated, cool, dry place away from open flame.