Food-Grade Sodium Tripolyphosphate (STPP E451i)
Food grade sodium tripolyphosphate (STPP) supplier in China
- E-Number: E451(i)
- CAS No.: 7758-29-4
- Executive Standard (China): GB 1886.335-2021
- Packing: 25kg lined bag (custom options available)
- Typical Use: meat, seafood and processed foods as quality improver
To quote quickly, please share destination market, annual demand and destination port.
GOWAY Chemical supplies premium food-grade Sodium Tripolyphosphate (STPP, E451i) manufactured for food-use compliance and stable batch quality.
It is widely used as a moisture-retention agent, texture improver, and sequestrant in meat, seafood, noodles and processed foods.
E-Number: E451(i) |
CAS: 7758-29-4 |
Standard: GB 1886.335-2021 |
Quality Reference: FCC (upon request)
Samples available for lab testing. Request the latest COA + certificate pack with destination market and application.
Buyers typically confirm certificates first. Provide destination market + application to receive the correct set (HALAL / KOSHER / COA).
Standards & Compliance (Food Grade)
Manufactured for food use with food-safety controls and batch traceability. Compliance documents are available for buyer audits.
Food Additive Identity
- E-Number: E451(i)
- CAS: 7758-29-4
- China Standard: GB 1886.335-2021
- FCC: Available upon request (for destination market compliance)
Food Safety Management
- ISO 22000 / HACCP inspection-ready documentation (upon request)
- COA / SDS / TDS available upon request
- Low heavy metal control for food processing requirements
Note: Please follow your local food additive regulations and permitted usage levels.
Product Overview
Food-grade Sodium Tripolyphosphate (STPP) is a white crystalline or granular phosphate used in food processing for
water retention, protein stabilization, and texture improvement,
especially in processed meat, seafood, surimi, and frozen prepared foods.
Technical Specification (Food Grade – Typical)
Typical specifications for food-grade STPP. Final shipped-batch data is subject to the COA.
Key differentiators for food buyers: heavy metals control and high solubility.
| Items | Specification (Food Grade) |
|---|---|
| Appearance | White crystalline / granular |
| Assay (as Na5P3O10) | Per GB 1886.335-2021 / customer required FCC spec (COA based) |
| P2O5 Content | Per standard & COA (destination market requirement) |
| Arsenic (As) | ≤ 3 mg/kg |
| Heavy Metals (as Pb) | ≤ 10 mg/kg |
| Fluoride (F) | ≤ 50 mg/kg |
| Whiteness | High whiteness for premium food appearance |
| Solubility | High solubility for food processing |
| pH (1% solution) | Per standard & COA (controlled for stable processing) |
Tip: Food buyers usually require the latest COA with batch No., production date, and heavy metal results.
Packaging Options
- 25 kg lined bag (food-grade)
- 50 kg bag with inner liner
- Other packing options available upon request
Specific Applications in Food Processing
Meat & Poultry
Improves water retention and yield, enhances slicing performance, stabilizes proteins,
reduces cooking loss, and maintains juiciness in ham, sausage, and marinated poultry.
Seafood Processing
Helps prevent moisture loss and color change during freezing/thawing, reduces drip loss,
and supports texture stability for shrimp, fish, and surimi products.
Noodle & Dairy Systems
Enhances noodle elasticity and bite, supports buffering/emulsification,
and helps prevent separation in certain dairy-based sauces and formulations.
Note: Usage levels must follow local regulations and your formulation requirements.
Typical Usage & Dosage Reference
Note: Always comply with your region’s food additive regulation. Below are common reference ranges.
- Processed meats: 0.3%–0.8% (depending on formulation)
- Seafood/surimi: 0.2%–0.5%
- Frozen prepared foods: 0.1%–0.4%
- Dairy/bakery systems: typically 0.1%–0.3% (with other stabilizers)
Why Choose GOWAY Chemical
- Dedicated food-additive production line – avoids cross-contamination with industrial chemicals
- Batch consistency with COA for every shipment
- Export-ready documents: certificates, COA, SDS, traceability support
- Flexible supply for food factories and distributors
Certificates
Food-grade buyers often require certificate verification before RFQ. Provide destination market, application,
and annual demand for the right document set.
Storage, Handling & Food Safety
- Store in a cool, dry warehouse; protect from moisture and odors
- Use only food-grade containers and avoid contamination
- Shelf life: 18–24 months under proper storage conditions
- Use appropriate PPE and keep the handling area clean
Not for food use? View our
Industrial Grade Sodium Tripolyphosphate
for detergent and water treatment applications.
Food Grade STPP FAQ
Is your STPP FCC & E451(i) compliant?
Yes. Our food-grade STPP is supplied for E451(i) food applications, and documentation for customer-required FCC specifications can be provided upon request.
The latest COA and compliance documents are available upon request.
What is the shelf life of Food Grade STPP?
Typically 18–24 months in original unopened packaging, stored in a cool, dry, and odor-free environment.
How do you ensure low heavy metal content?
We apply food-grade raw material control, dedicated food-additive production line management, and batch QC testing.
Each shipment can be supported with COA showing key limits (e.g., As / Pb / fluoride) for buyer verification.
Can you provide samples for lab testing?
Yes. Samples are available for lab testing. Contact us with destination market, application, and required specifications.
Contact Us for Food-Grade STPP Supply
WhatsApp: Talk to Food Additive Specialist