CAS 1303-96-4
Borax Decahydrate
CAS 1303-96-4B4H20Na2O17381.4 g/mol
Borax Decahydrate, also known as Sodium borate decahydrate or Borax, is primarily used in water treatment applications. This powerful alkaline compound acts effectively as a buffering agent, stabilizing pH levels and enhancing the solubility of various materials. It's widely utilized in agriculture for enhancing soil quality, as well as in cleaning formulations for its effective detergency. Industries ranging from pharmaceuticals to construction benefit from its multifaceted properties, making it a versatile chemical in various processes.
Main applicationWater treatment — stabilizing pH levels and enhancing solubility of minerals
Borax Decahydrate plays a pivotal role in various industries due to its buffering and alkaline properties. It addresses critical needs in water treatment and agriculture by improving efficiency and sustainability. This product is significant for manufacturers looking for effective additives in their formulations, contributing to higher product quality.
Also known as
- BORAX
- Borax decahydrate
- Sodium borate decahydrate
- Borax (B4Na2O7.10H2O)
- Sodium pyroborate decahydrate
- Antipyonin
- Borascu
- Boricin

Trade pricing
Quoted per enquiry
Pricing depends on volume, grade and delivery point. Our desk responds within two working hours.
Available packaging
- Available in bulk bags and various pack sizes depending on customer needs.
Documentation
Batch-specific COA issued with every consignment.
Technical specifications
- CAS number
- 1303-96-4
- Chemical formula
- B4H20Na2O17
- Molecular weight
- 381.4 g/mol
- Grade
- Technical grade
- Appearance
- White crystalline solid
- Density
- 1.73 g/cm³
- Density
- 1.73 g/cm³
- Melting Point
- 75 °C (decomposes)
- pH
- 9.3 (0.1% solution)
- Solubility
- Soluble in water; alkaline to litmus
Borax Decahydrate, with the molecular formula B4H20Na2O17, is a sodium borate with a molecular weight of 381.4 g/mol. This compound appears as a white, crystalline solid with a density of 1.73 g/cm³. It decomposes at 75°C and exhibits alkaline properties, with a pH value around 9.3 in a 0.1% solution. When mixed with water, it releases hydroxide ions, making it useful in buffering applications. For procurement, consider the intended application for appropriate grade selection, and specify concentration and packaging options when ordering.
Delivery
Borax Decahydrate is dispatched from our Nairobi warehouse across Kenya, and export delivery is arranged to the wider East African market. Lead time depends on quantity and grade and is confirmed with your quotation — see delivery and collection for the towns we reach and how dispatch works.
Applications & uses
- Water treatment — stabilizing pH levels and enhancing solubility of minerals
- Agriculture — improving soil quality and nutrient uptake
- Cleaning formulations — acting as an effective detergent and stain remover
- Pharmaceuticals — used in various formulations for its alkaline properties
- Metallurgical processes — serving as a flux in the fusion of metals
Industries we supply this to
Why buy this from Sparks
- Enhances pH stability in water treatment, improving process efficiency
- Improves soil nutrient availability, fostering healthy plant growth
- Acts as a safe cleaning agent, reducing environmental impact
- Contributes to formulation stability in pharmaceuticals
- Facilitates metal fusion, enhancing production processes
Quality assurance
- Batches are checked against the specification values listed above before dispatch.
State what your process, auditor or customs clearance requires when you request a quotation, and it is confirmed with the quote.
Safety, handling & storage
Always consult the full Safety Data Sheet before handling. Personnel must use appropriate PPE and follow local regulations for storage, transport and disposal.
Frequently asked questions
What is the CAS number of Borax Decahydrate?
The CAS registry number for Borax Decahydrate is 1303-96-4. Its chemical formula is B4H20Na2O17, with a molecular weight of 381.4 g/mol. Quote this number when requesting a quotation or checking documentation, as it identifies the substance unambiguously regardless of the trade name used.
What are the other names for Borax Decahydrate?
Borax Decahydrate is also referred to as BORAX, Borax decahydrate, Sodium borate decahydrate, Borax (B4Na2O7.10H2O), Sodium pyroborate decahydrate and Antipyonin. These names describe the same substance, so a specification or enquiry written against any of them can be matched to this product.
What grade of Borax Decahydrate is supplied?
Borax Decahydrate is supplied as Technical grade. State the grade your process requires when requesting a quotation — where an alternative grade can be sourced, it is confirmed at quotation stage rather than assumed.
What does Borax Decahydrate look like?
Borax Decahydrate is described as white crystalline solid. Appearance is a useful first check on receipt of goods, though it does not replace the certificate of analysis for confirming that the material meets specification.
What is Borax Decahydrate used for?
Common applications include water treatment — stabilizing pH levels and enhancing solubility of minerals, agriculture — improving soil quality and nutrient uptake, cleaning formulations — acting as an effective detergent and stain remover, pharmaceuticals — used in various formulations for its alkaline properties and metallurgical processes — serving as a flux in the fusion of metals. The suitability of the product for a particular process depends on the grade and specification required, which is worth confirming against your own process conditions.
Which industries use Borax Decahydrate?
Borax Decahydrate is supplied to the Water Treatment, Food Processing & Beverage, Agriculture & Agrochemicals, Pharmaceuticals & Healthcare and Cleaning & Detergents sectors. These are the industries this product is listed against in our catalogue; if your application falls outside them, we can advise on suitability before you order.
What packaging is Borax Decahydrate available in?
Available in bulk bags and various pack sizes depending on customer needs. Where a different pack size or bulk delivery is required, it is confirmed at quotation stage against availability rather than listed here as standard.
Related to Borax Decahydrate
Where this product sits in the catalogue, and the sectors that use it.
References
Technical information on this page was compiled from the following published sources. Safety and handling data always comes from the supplier’s own safety data sheet.
- 1.PubChem CID 16211214pubchem.ncbi.nlm.nih.gov
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