Typical specifications for industrial-grade STPP. Values can be adjusted to meet customer requirements.
Latest batch COA available upon request.
| Item | Specification |
|---|---|
| Appearance | White Powder or Granular |
| Assay (as Na5P3O10) | 94.0% Min |
| P2O5 Content | 57.0% Min |
| Water Insoluble Matter | 0.1% Max |
| Iron (Fe) | 0.01% Max |
| pH (1% solution) | 9.2 – 10.0 |
| Whiteness | 90% Min |
| Typical Particle Size | Granular: 0.2–1.0 mm | Powder: <0.15 mm |
Note: Final specs are subject to the COA of the shipped batch.
Custom assay (95%, 96%) can be offered for certain ceramic applications.
Wholesale & Logistics
Industrial buyers care about consistency and delivery reliability. Here is how we support bulk procurement.
MOQ
- Trial order: 500 kg (can be mixed with other phosphates)
- Standard FCL: 20 MT (20ft container)
Lead Time
- Production: 7–14 days after PO confirmation
- Shipping: FCL / LCL available (FOB/CIF/CFR)
Ports & Terms
- Ports: Guangzhou / Shanghai / Ningbo
- Payment: T/T 30% deposit, 70% before shipment (or L/C)
Packaging Options & Typical Loading (20ft / 20 MT)
| Type | Description | Typical loading per 20ft container |
|---|---|---|
| 25 kg bag | Multi-wall PP + PE inner liner, moisture-proof | ~800 bags (20 MT) |
| 50 kg bag | Heavy-duty woven PP, double-sealed | ~400 bags (20 MT) |
| 1000 kg jumbo bag | Palletized; liner optional upon request | 20 bags (20 MT) |
Applications by Industry
1) Detergents & Cleaning Products
Industrial STPP is a classic builder that softens water and improves detergency performance.
Value point: reduces surfactant cost by 8–12% through water softening and better cleaning efficiency (formulation dependent).
- Sequesters Ca2+/Mg2+ to improve surfactant efficiency
- Supports soil suspension and reduces redeposition
- Contributes alkalinity and formulation stability
2) Ceramics, Tiles & Glaze
Used as a deflocculant / dispersant to reduce water demand and control viscosity in ceramic slurries.
Value point: can lower slurry moisture by 7–10%, helping reduce drying energy (system dependent).
3) Industrial Water Treatment
Acts as a sequestrant and dispersant to reduce scale risk and manage hardness ions.
Value point: phosphate programs may help control CaCO3 scale at 2–10 ppm in suitable systems (chemistry dependent).
Learn more in our solution page: Water Treatment.
4) Concrete & Building Materials
Can be used in certain admixture systems to help control water retention and rheology, supporting workability and performance.
Why Choose Goway for Industrial STPP Supply?
- Factory-direct: specialized in phosphates since 2009; no trader markup
- Capacity: ~30,000 MT/year (stable bulk supply for distributors & factories)
- Quality control: in-house lab (titration/ICP), batch traceability
- Global supply: exported to 50+ countries (EU, USA, Brazil, India, Middle East, SE Asia)
- Documentation ready: COA per batch, SDS (GHS), TDS/spec sheet; destination-specific files on request
For Formulators
Get sample + TDS/COA and application guidance for detergents, ceramics, or water programs.
Get Sample + TDS/COAFor Urgent Orders
Check current stock availability and fastest shipping to your destination.
Check Stock → WhatsAppSuggested inquiry fields: Application, Quantity, Destination Port, Annual Demand, Preferred Packing.
Quality / Documents / Buyer guide
FAQ: Industrial STPP Bulk Supply
Q1: What is industrial STPP mainly used for?
A: Industrial STPP is widely used as a detergent builder (laundry powder and cleaning formulations), a dispersant/deflocculant in ceramics and construction, and a sequestrant in water treatment to bind hardness ions.
Q2: Do you supply STPP for laundry detergent builder applications?
A: Yes. Our industrial STPP is suitable for detergent builder use. Share your formula type (powder/liquid), target performance, and local water hardness, and we can recommend the best grade and typical checks on the COA.
Q3: Powder vs granular STPP — which should I choose?
A: In general, powder is preferred when fast dissolution and blending are needed, while granular can reduce dust and improve handling in some production lines. Tell us your process and equipment, and we’ll advise the most suitable form.
Q4: What is your typical specification (assay, P2O5, insoluble matter, pH)?
A: We supply industrial STPP with 94% min grade as standard, and can offer customized higher assay options. Key items on the COA usually include assay, P2O5, water-insoluble matter, pH, and whiteness. Request our latest COA for detailed ranges.
Q5: What packaging options do you offer?
A: Standard packing includes 25kg bags and 1,000kg big bags. Packing can be customized based on your storage and logistics requirements.
Q6: What is your MOQ and lead time?
A: MOQ typically starts from 500 kg. Usual lead time is 7–14 days, depending on quantity, packing, and schedule. For urgent orders, share your timeline and destination.
Q7: What documents can you provide for shipment and customs clearance?
A: We can provide COA, SDS, TDS, and common export documents (commercial invoice, packing list, B/L details support). If you have destination-specific requirements, tell us in advance.
Q8: Can industrial STPP be used in food applications?
A: No. Industrial STPP is not intended for food additive use. For food processing, please use Food Grade STPP (E451(i) / INS 451) and refer to the food-grade compliance documentation.
Related:
Industrial Cleaning & Detergents
Industrial SHMP ·
Industrial TSPP ·
Industrial Phosphates Technical Guide

