Sodium Tripolyphosphate (STPP)
| Product | Sodium Tripolyphosphate (STPP) |
|---|---|
| Formula | Na5P3O10 |
| Assay | 94% min |
| CAS No. | 7758-29-4 |
| Appearance | White powder |
| Pack size | 25 kg bag |
| Main uses | Detergent builder, ceramics, water softening, dispersant |
| Delivery | Same-day in Nairobi; delivery across East Africa |
| Price | Request a quotation |
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Sodium Tripolyphosphate for Detergents and Industry
Sodium Tripolyphosphate, usually called STPP, is a white powder that binds calcium and magnesium in water. Sodium triphosphate therefore softens water and keeps dirt suspended, which makes it one of the most effective detergent builders.
We stock Sodium Tripolyphosphate with an assay of at least 94% Na5P3O10, supplied in 25 kg bags. Wisdo Merchants Chemical Division delivers it across Kenya and East Africa from Industrial Area, Nairobi.
Features and Benefits of Sodium Tripolyphosphate
- Powerful water softener: Binds hardness minerals so surfactants work better.
- Dirt dispersant: Keeps soil suspended and stops it settling back on fabric.
- Buffering: Helps hold wash solutions at an effective alkaline pH.
- Good assay: 94% min active content for reliable formulation.
Technical Specifications
| Property | Value |
|---|---|
| Chemical name | Sodium tripolyphosphate (pentasodium triphosphate) |
| Chemical formula | Na5P3O10 |
| Molar mass | 367.86 g/mol |
| CAS number | 7758-29-4 |
| EC number | 231-838-7 |
| HS code | 2835.31 |
| Assay | 94% min |
| Appearance | White powder |
| Solubility | Soluble in water |
| Packaging | 25 kg bag |
A batch Certificate of Analysis (COA) is available on request.
Applications of Sodium Tripolyphosphate
Detergents and Cleaners
Detergent makers use STPP in washing powders, dishwasher detergents and industrial cleaners. It often works alongside alkalis such as our light sodium carbonate. Browse our detergent and soap raw materials.
Ceramics, Paints and Water
Ceramic and tile makers use it as a deflocculant to thin clay slips. Paint makers use it as a pigment dispersant. Water treatment operators use it to control scale.
Food Processing
Food-grade STPP (E451) is used in meat and seafood processing. Our current stock is described by its assay only, so ask our sales team to confirm the grade before any food use. See our food and beverage ingredients.
Safety and Handling
- Eye irritation: Dust and solutions can irritate the eyes. Wear goggles.
- Dust: Avoid breathing the dust. Use a dust mask.
- Environment: Phosphates feed algae in rivers and lakes. Follow local discharge rules.
Always read the Safety Data Sheet before use.
Storage and Shelf Life
Store bags in a dry, covered place on pallets. Keep them sealed, because the powder absorbs moisture and cakes.
Frequently Asked Questions
Why is STPP used in detergents?
It softens water and keeps dirt suspended, so the detergent cleans better in hard water.
Is STPP the same as sodium hexametaphosphate?
No. Both are polyphosphates, but they have different chain lengths and properties.
Do you deliver outside Nairobi?
Yes. We deliver across East Africa and confirm freight and timelines with your quotation.
Order Sodium Tripolyphosphate from Wisdo Merchants
A reliable builder supply keeps your detergents performing. Wisdo Merchants Chemical Division delivers from Industrial Area, Nairobi.
Delivery: Same-day delivery within Nairobi upon order confirmation, subject to stock availability. We also deliver across East Africa, and we confirm freight and timelines with your quotation.
Request your quotation today:
- Call or WhatsApp: +254 795 938305
- Email: sales@wisdomerchants.com
- Visit: Dar es Salaam Road, Off Enterprise Road, Industrial Area, Nairobi
- Online: Contact us or browse the full chemical catalogue
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