Sodium Tetra Borate, Decahydrate (Borax), 99.9%

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Sodium Tetra Borate, Decahydrate (Na₂B₄O₇·10H₂O), commonly known as Borax, is a 99.9% pure, technical-grade boron compound widely used across industries. This white powder or fine granular substance consists of soft, colorless crystals that dissolve easily in water. Borax is a key ingredient in heat-resistant glass, porcelain enamel, and detergents and is used in flux soldering, forge welding, fertilizers, photography, and laboratory reagents. With a boron oxide (B₂O₃) content of 37.74% and minimal impurities, Borax ensures consistent performance for industrial applications. Noncombustible and toxic by inhalation, it must be handled with care. Note that Borax is restricted from food, nutritional, and carpet applications. This essential material is available in small and bulk packaging to suit diverse requirements.

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Key Features

• 99.9% pure, technical-grade boron compound
• Essential for heat-resistant glass and porcelain enamel
• Used in flux soldering and forge welding
• Key ingredient in detergents, fertilizers, and laboratory reagents
• Water-soluble, white powder or fine granular form
• Noncombustible; toxic by inhalation

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Product Specifications

Additional Description
 

CAS # [1303-96-4]Na2B4O7.10H2O
Toxic by inhalation, noncombustible
Use restrictions:
Cannot be used in food applications and are labeled accordingly. Therefore, Borate products shall not be used as food additives or preservatives.
Cannot be used as human nutritional or mineral supplements.
Is not intended for carpet/upholstery applications and shall not be used for carpet/upholstery deodorization or flea control purposes.
Typical Analysis:

Analysis	Values	Specifications	Unit
B2O3	37.74	36.5 to 40.2	%
Chloride as Cl	0.01150	0 to 0.07	%
Fe	0.00082	0 to 0.003	%
Na2B4O7.10H2O	103.4	99.9 to 110.1	%
Na2O	16.8	16.2 to 17.9	%
Sulfate as SO4	0.02090	0 to 0.06	%
70 mesh	2.0	0 to 8.0	%

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Perfect for glassmaking, welding, and industrial applications.

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