Manufacture Of Zinc Borate 3.5H2O

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Loading Port:
Tianjin Port
Payment Terms:
TT or LC
Min Order Qty:
20MT m.t.
Supply Capability:
120000MT m.t./month

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Product Description:

Introduction of Zinc Borate 3.5H2O:

Zinc borate is primarily usedas a flame retardant in plastics and cellulose fibers, paper, rubbers and textiles. It is also used in paints, adhesives, and pigments. As a flame retardant, it can replace antimony trioxide as a synergist in both halogen-based and halogen-free systems. It is an anti-dripping and char-promoting agent, and suppresses the afterglow. In electrical insulator plastics it suppresses arcing and tracking.


In halogen-containing systems, zinc borate is used together with antimony trioxide and alumina trihydrate. It catalyzes formation of char and creates a protective layer of glass. Zinc catalyzes the release of halogens by forming zinc halides and zinc oxyhalides.


Specification of Zinc Borate 3.5H2O:


1Zinc Borate %99 min
2ApperanceWhite crystal powder
3Boron Oxygenation (B2O3) %48.5±1.5
4Zinc Oxygenation (ZnO) %37±1.5
5Surface Moisture (H2O) %≤1
6specific gravity g/cm32.67
7Residues on 325 mesh %≤0.2
8Temp of loss crystal water °C350±50
10Refractive index1.58
11Melting point °C980
12Pb %0.02 max
13Fe %0.05 max
14As %0.02 max
15PackingInner plastic film with PP woven bags outside
16Net weight25 kg/ Bag
17Loading Quantity18-20MT / 20'FCL


Zinc Borate 3.5H2O

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Zinchem,a well-known enterprise specializing in processing of Zinc chemical products and non-ferrous mineral products. Now , our company has been one of the greatest manufacturers&exporters in China for zinc oxide, lithopone ,zinc carbonate and zinc sulphate.

1. Manufacturer Overview

Location Guangxi, China
Year Established 2005
Annual Output Value Above US$ 7 Million
Main Markets 20.00% North America
20.00% South America
10.00% Eastern Europe
10.00% Southeast Asia
10.00% Northern Europe
10.00% South Asia
10.00% Western Europe
5.00% Africa
5.00% Mid East
Company Certifications ISO 9001:2008;FAMI-QS

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Guangzhou Port, Fangcheng Port
Export Percentage 91% - 100%
No.of Employees in Trade Department 6-10 People
Language Spoken: English; Chinese
b)Factory Information  
Factory Size: Above 100,000 square meters
No. of Production Lines Above 10
Contract Manufacturing Design Service Offered; Buyer Label Offered
Product Price Range High; Average