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Purity 96% STPP Phosphate Sodium Tri Poly Phosphate For Water Treatment

Categories Sodium Tripolyphosphate
Brand Name: Riel Chemical
Model Number: 96%
Certification: SGS, ISO9001, CE
Place of Origin: Weifang
MOQ: 1 ton
Price: USD 730~800 FOB
Payment Terms: T/T , L/C
Supply Ability: 50 tons per day
Delivery Time: 3~5 work day
Packaging Details: 25 kg polyethylene woven bag, moisture-proof, easy to transport
CAS: 7758-29-4
EINECS: 231-838-7
Appearance: White particles or powder
Crystalline hydrate: Water-free
Another name: Sodium Triphosphate
Life span: Two years
Available port: Qingdao Port, Tianjin Port, Shanghai Port, Lianyungang Port, Fujian Port, Guangzhou Port
Fusing point: 622℃
Solubility: Soluble in water, its aqueous solution is alkaline
Water solubility: Soluble in water
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Purity 96% STPP Phosphate Sodium Tri Poly Phosphate For Water Treatment

Industrial Grade 96% Sodium Tripolyphosphate for Water Treatment
Product Specifications
CAS7758-29-4
EINECS231-838-7
AppearanceWhite particles or powder
Crystalline hydrateWater-free
Alternative NameSodium Triphosphate
Shelf LifeTwo years
Available PortsQingdao Port, Tianjin Port, Shanghai Port, Lianyungang Port, Fujian Port, Guangzhou Port
Melting Point622℃
SolubilitySoluble in water, its aqueous solution is alkaline
Technical Specifications

Molecular formula: Na5P3O10

Molecular weight: 367.86

Industrial grade: CAS 7758-29-4

Standard: GB/T 9983-2004

Analysis ItemStandard Value
Main content: sodium tripolyphosphate ≥96.0%
Phosphorus pentoxide P2O5≤57.0%
Water insoluble≤0.10%
Iron ≤0.007%
Ph Value (1%)9.2-10.0
Whiteness ≥90
Sodium Tripolyphosphate powder sample
Physical and Chemical Properties

Chemical Formula: Na₅P₃O₁₀

Molecular Weight: 367.86 g/mol

Appearance: White crystalline or powdery solid

Form: Typically exists as an anhydrous compound (Na₅P₃O₁₀) or a hexahydrate (Na₅P₃O₁₀*6H₂O)

Water Solubility: Highly soluble in water (14 g/100 mL at 20°C, 30 g/100 mL at 60°C)

Other Solvent: Insoluble in organic solvents (e.g., ethanol)

Aqueous Solution pH: 9.5-10.5 (1% solution)

Decomposition Temperature: 622°C (into sodium pyrophosphate and sodium metaphosphate)

Hydrate Stability: Hexahydrate tends to effloresce in dry air

Hygroscopicity: Strong; easily absorbs moisture from the air

Chelating Ability: Forms stable soluble complexes with metal ions (calcium, magnesium, iron)

Chemical structure of Sodium Tripolyphosphate Industrial packaging of Sodium Tripolyphosphate
Industrial Applications
1. Detergents and Cleaners
  • Softens water quality and enhances detergent decontamination ability
  • Chelates calcium and magnesium ions to prevent scale formation
  • Disperses dirt and prevents reattachment to surfaces
  • Maintains alkaline environment for improved cleaning
2. Food Industry
  • Food additive (E451) for quality improvement
  • Water retaining agent for meat and seafood products
  • Texture improver for dairy products and processed meats
  • Preservative to extend shelf life
3. Water Treatment
  • Prevents scale formation in boiler and cooling water systems
  • Improves heat exchange efficiency
  • Reduces corrosion in pipes and equipment
4. Ceramics and Building Materials
  • Dispersant for ceramic paste preparation
  • Improves slurry flow and uniformity
  • Enhances strength and surface finish of products
5. Textile Industry
  • Printing and dyeing process auxiliary agent
  • Improves dye dispersion and uniformity
  • Enhances dyeing effect and color fastness
6. Petroleum Industry
  • Drilling fluids and oilfield chemicals
  • Adjusts drilling fluid viscosity
  • Prevents scaling and reduces corrosion
7. Other Applications
  • Metal treatment: cleaning and rust prevention
  • Paper industry: filler and coating dispersant
  • Coatings industry: improves stability and fluidity
8. Environmental Considerations
  • Potential for water eutrophication
  • Being replaced by non-phosphorus alternatives (zeolite, polycarboxylate) in some applications
Industrial application of Sodium Tripolyphosphate Quality control of Sodium Tripolyphosphate
Riel Chemical Product Advantages
  • High quality raw materials: Strict selection meeting environmental standards
  • Advanced production technology: International equipment with automated processes
  • Diverse product lines: Wide range of industrial chemicals with customization options
  • Strict quality control: ISO9001 certified with continuous improvement
  • Environmental protection: Focus on eco-friendly products meeting safety standards
  • Market recognition: Strong brand reputation with customer-focused service
  • R&D innovation: Dedicated team developing competitive new products
Frequently Asked Questions
What is your payment term?

We accept T/T and L/C at sight as payment terms.

Are you able to deliver on time?

Yes, we specialize in this product line and guarantee timely delivery while maintaining top quality.

Do you provide free samples?

Yes, we provide free samples with the customer responsible for express fees.

How about the price? Can you make it cheaper?

We prioritize customer benefits and offer competitive, negotiable pricing based on order conditions.

Can I visit your company and factory in China?

Yes, we welcome visits to our Weifang facility with airport pickup/dropoff service provided.

What if there is a quality problem?

Our professional after-sales team promptly addresses all quality concerns.

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