Sodium Tripolyphosphate (E451)

Description

Product Overview
Sodium Acid Pyrophosphate (E450) is a crystalline inorganic salt used primarily as a buffering and leavening acidulant in industrial food processing and as a sequestrant and pH modifier in multiple technical applications. Its primary industrial use includes controlled acidification in baking systems, stabilization of metal ions in water treatment and plating baths, and scale inhibition or buffering in various chemical processes. The product delivers precise, reproducible acidity control and strong chelation performance, enabling consistent process outcomes, reduced rework and predictable product quality. Strategically, Sodium Acid Pyrophosphate is a high-utility intermediate that lowers operational variability and supports regulatory-compliant formulation across food, chemical, and industrial manufacturing supply chains.

Key Specifications & Technical Characteristics

• Chemical composition: Sodium acid pyrophosphate, formula commonly represented as Na2H2P2O7 (technical grade), with expected impurities limited to typical counter-ions and residual moisture.

• Purity/grade: Food-grade and technical-grade options available; typical assay ≥ 99% for food/USP-grade; technical variants offered at ≥ 95% depending on application.

• Physical form: White to off-white crystalline powder or granules.

• Particle size: Standard industrial grade 100–400 mesh (custom milling available on request).

• Bulk density: Apparent bulk density ~0.9–1.2 g/cm³ (packed density varies with packaging).

• pH (1% aqueous solution): typically acidic, pH ~2.5–4.0 depending on concentration.

• Solubility: Readily soluble in water; hydrolyzes slowly under elevated temperature and pH conditions.

• Moisture content: Typically ≤ 1.5% (food-grade tighter spec available).

• Packaging options: 25 kg multi-wall paper sacks with PE liner; 500 kg and 1,000 kg FIBCs (big bags); ISO tank or bulk pneumatic tanker options for large-volume customers.

• Shelf life/storage: 24 months in original, unopened packaging under cool, dry conditions; store away from strong bases and excessive humidity.

• Compliance: Available with certificates for food safety (when food-grade), REACH registration data, and relevant MSDS / technical data sheets provided.

Core Industrial Applications

• Food processing (baking, snacks, processed foods): Acts as a leavening acid, controls dough pH and metal ion interactions, improves texture and color stability; preferred where consistent rise and low off-flavors are required.

• Beverage and canned foods: Used as sequestrant to control metal-catalyzed oxidation and to stabilize clarity and color.

• Water treatment and metal finishing: Functions as a chelating/sequestering agent to bind iron, calcium, and magnesium ions, improving bath life and reducing scale formation in boilers and plating baths.

• Detergent and cleaning formulations: Enhances builder performance, controls hardness ions and improves cleaning efficiency without strong alkalinity.

• Industrial chemical manufacturing: Used as a pH modifier or intermediate in specialty phosphate formulations where reproducible acidity and buffering are required.
  Why it outperforms alternatives:

• Precise, slow-acting acidity and controlled chelation deliver reproducible processing outcomes versus more variable organic acid systems.

• Lower required dosages to achieve target ionic control compared with some polyphosphate blends, enabling cost-efficient formulation.

• Robust thermal and pH performance profile for industrial processes, reducing side reactions and downtime.

Competitive Advantages

• Quality consistency: Manufactured to tight batch-to-batch specifications with certificate of analysis, in-process controls, and traceability to raw-material lots.

• Supply reliability: Established production sourcing and dedicated logistics corridors for continuous availability to large-scale processors.

• Logistics capability: Multiple packaging and transport modes (sacks, FIBC, ISO tank, bulk tanker) to optimize landed cost and minimize handling steps at customer sites.

• Price competitiveness: Scalable contract pricing for long-term offtake and volume discounts for bulk 20 MT and above shipments.

• Sustainability: Reduced-waste bulk packaging options and optimized logistics lower CO2 intensity per tonne delivered; available documentation for regulatory and sustainability reporting.

• Technical support: Comprehensive technical data sheets, application guidance, troubleshooting support and on-request lab sample testing to aid formulation and process integration.

Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20 MT

• Loading capacity (MT per container): Standard 20 ft container: up to 20 MT (bagged, depending on palletization); 40 ft container: up to 24–25 MT (bagged, optimized pallet pattern); ISO tank/bulk: up to 24–26 MT depending on density and local regulatory limits.

• Lead times: Subject to contract and current inventory; expedited schedules available for framework agreements.

• Documentation provided: Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), technical data sheet, and regulatory compliance declarations on request.