Product
Borax
Borax (sodium tetraborate pentahydrate or decahydrate) is a boron mineral salt used as a buffer, flux and cleaning agent, and in glass, detergents and water treatment.
- Grades / forms
- Pentahydrate & decahydrate
- Documents
- TDS to view and download
Overview
Borax dissolves to give a mildly alkaline, well-buffered solution, which is why it is used for pH control and in cleaning products. Its boron content makes it a key raw material for glass fibre, ceramics and enamels.
The pentahydrate carries more boron per kilogram and is preferred where freight matters; the decahydrate is the traditional form. Both are white crystalline powders.
Applications
- 1Glass, glass fibre and ceramic glazes
- 2Detergents and cleaning powders
- 3pH buffering in water and industrial processes
- 4Metallurgical flux
- 5Micronutrient fertilisers (boron)
Specification
- B₂O₃ (%)
- 48.000 – 49.350
- Equivalent Na₂B₄O₇·5H₂O (%)
- 100.420 – 103.240
- Na₂O (%)
- 21.370 – 21.950
- SO₄ (ppm)
- Max 135
- Cl (ppm)
- Max 70
- Fe (ppm)
- Max 3
- Insolubles in Water (ppm)
- Max 150
- Sieve (+) 1.180 mm (%)
- Max 4
- Sieve (-) 0.075 mm (%)
- Max 5
Specification as stated on our Technical Data Sheet, which you can download below.
Documents
PDF documents from our quality records.
Packing & storage
Packing
- 25 kg & 50 kg HDPE bags or drums
- 1000 kg jumbo bags
- 1 MT IBC totes for liquids
Storage & handling
Store dry in closed bags; borax cakes if exposed to humidity.
Enquire
Get a price for Borax
Send grade, quantity and destination port. Price, lead time and documents come back within one business day.
Request a quotation or call +91 97979 77958- Certificate of Analysis with every batch
- SDS in destination format
- Made to your specification
- Private label packing
Questions
Borax, answered.
Pentahydrate has more boron per kilogram, so it is cheaper to ship per unit of boron. Decahydrate suits processes written around it.
Yes, as a source of boron, a micronutrient many crops need.
It buffers pH, softens water and helps stain removal.
Yes. Cosmo Chemistry manufactures and exports Borax from Surat, Gujarat, India to more than 55 countries, for customers in the water treatment and basic industrial chemicals industries. Send your grade, quantity and destination port for a quotation within one business day.
Every shipment of Borax from Cosmo Chemistry includes a batch-specific Certificate of Analysis (COA) and Safety Data Sheet (SDS). Certificate of Origin, third-party pre-shipment inspection and destination-specific regulatory documentation are arranged on request.
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