White Granular Borax Anhydrous For Borosilicate Glass CAS 1330-43-4 Sodium Tetraborate Na2B4O7 For Glass Making
Brand Name:ETiMADEN
Model Number:YX-LSPS
Minimum Order Quantity:25kgs/1200kgs
Delivery Time:Within 3-7 days
Payment Terms:L/C, T/T
Place of Origin:Turkey
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White Granular Borax Anhydrous for Borosilicate Glass, CAS 1330-43-4 Sodium Tetraborate Na2B4O7 for Glass Making
1. Borax Anhydrous Introduction
Turkey ETiBOR-68 disodium tetraborate anhydrous appearance is white
granular or colorless vitreous crystal. The melting point of alpha
orthorhombic crystal is 742.5 ℃, and the density is 2.28; The
melting point of beta orthorhombic crystal is 742.5℃, and the
density is 2.28. It has strong hygroscopicity and can soluble in
water and glycerol. Na2B4O7 is slowly dissolved in methanol to form
a solution with a concentration of 13-16%. the aqueous solution is
weak alkaline, insoluble in alcohol. Anhydrous borax is the product
obtained when borax is heated to 350-450 ℃. When placed in air,
isodium tetraborate anhydrous can be hygroscopically changed into
borax decahydrate or borax pentahydrate.
We sell Chinese borax anhydrous, Turkey ETiBOR-68 disodium
tetraborate anhydrous and US Na2B4O7.
Borax Decahydrate Used in Industrial Soap and Detergent
| Product Name | White Granular Borax Anhydrous for Borosilicate Glass |
| Chemical Formula | Na2B4O7 |
| Other Name | disodium tetraborate anhydrous/ sodium tetraborate |
| Purity | 99.5%/99.9% |
| CAS No. | 1330-43-4 |
| EINECS NO. | 215-540-4 |
| M.W. | 201.219 |
| Boiling Point | 1575°C |
| Melting Point | 741 °C |
| HS Code | 2840110000 |
| Appearance | White Granular |
| Application | borosilicate glass making |
2. Borax Anhydrous Specifications
| Component | Content |
| B2O3 | 68.30-69.40% |
| Na2O | 30.41-30.90% |
| SO4 | 300 ppm max |
| Cl | 105 ppm max |
| Fe | 50 ppm max |
| Insolubles in water | 920 ppm max |
| Size | |
| +1.600mm | 5.00% max |
| -0.075mm | 5.00% max |
3. Borax Anhydrous for Boronsilicate Glass Making
In borosilicate glass manufacturing, borax anhydrous has advantages over 5- and 10-mol borax.
Borax anhydrous has a higher bulk density and melts more rapidly, even with minimum energy. Borax anhydrous is also a source of sodium and can be used with boric acid or boric oxide to control the sodium oxide/boric oxide ratio in the glass.
Borax anhydrous can be used to formulate glasses with low thermal expansion (high thermal shock resistance) and good chemical durability. Borax anhydrous acts as both a flux and network former.
Borax anhydrous allows the formulation of low-melting glazes and enamels with the correct thermal expansion in glass and enamel production.
Borax anhydrous is used as a source of B2O3 in the manufacture of many different types of borosilicate glass, including:
1. Heat and chemical resistant glasses
2. Illumination glasses
3. Optical lenses
4. Medical and cosmetic containers
5. Hollow microspheres
6. Glass beads
In the manufacturing process, borax anhydrous can increase furnace productivity. It has a higher bulk density and melts more rapidly with minimum energy than borax (5 and 10 mol). Borax anhydrous also provides a source of sodium and can be used with boric acid or boric oxide to control the sodium oxide/boric oxide ratio in glass.
4. Borax Anhydrous Product Pictures
5. Packing and Shipping for Borax Anhydrous
White Granular Borax Anhydrous For Borosilicate Glass CAS 1330-43-4 Sodium Tetraborate Na2B4O7 For Glass Making
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