Starch and texture systems
STMP is used in selected modified-starch processes and can be evaluated for texture, viscosity and process stability.
Food grade phosphate · Sodium cyclic phosphate
Food Grade Sodium Trimetaphosphate (STMP)
Sodium trimetaphosphate is a cyclic sodium phosphate used in selected food systems for starch modification, dispersion, water management and product stability.
- CAS number
- 7785-84-4
- Product code
- STMP
- Formula
- Na3(PO3)3
- MOQ
- 500 kg
Reference assay≥98.5%
Standard packing25 kg bag
Container loading24 MT / 20' FCL
QualificationCOA and certificates on request
Product overview
What is food grade sodium trimetaphosphate?
Food grade sodium trimetaphosphate (STMP) is a cyclic condensed phosphate identified as Na3(PO3)3, CAS 7785-84-4, with a reference content of at least 98.5%.
Commercial specifications and independent additive-identity references serve different purposes. Legal use, dosage and documentation must be confirmed for the destination market and exact food application.
Functional roles
Why is STMP used in food processing?
Performance depends on grade, dosage, formulation, process conditions and applicable food rules.
Water and dispersion management
Evaluate water holding, softening, adhesion, dispersion and stabilization targets in the actual food system.
Food application screening
Common food grade STMP applications
These are application-screening areas, not universal use approvals or guaranteed outcomes.
Starch modification
Used as a phosphate reagent in qualifying modified-starch processes; confirm residual limits and the applicable food standard.
Fruit juice and beverages
Evaluate water holding, haze control, mineral interactions, color and vitamin stability in the complete beverage system.
Meat processing
Screen water management, binding, dispersion and yield under the actual protein, salt and process conditions.
Ice cream
May support stabilization objectives after checking compatibility with proteins, minerals, hydrocolloids and freezing conditions.
Cheese and dairy
Evaluate dispersion, mineral balance, texture and storage stability in the intended dairy formulation.
Color and vitamin protection
Assess discoloration and vitamin C stability in shelf-life trials; these outcomes are formulation- and process-dependent.
Commercial specifications
Food grade STMP reference specification
These commercial reference limits are separate from batch COA results and regulatory requirements. Agree the grade, analytical basis and methods in the signed specification.
| Test item | Unit | Specification |
|---|---|---|
| Sodium trimetaphosphate content | % | ≥98.5 |
| P2O5 content | % | ≥68.0 |
| Arsenic (As) | % | ≤0.0003 |
| Heavy metals (as Pb) | % | ≤0.001 |
| Fluoride (F) | % | ≤0.003 |
| Lead (Pb) | % | ≤0.0004 |
| pH of 1% solution | — | 6.0–8.0 |
| Insoluble matter | % | ≤0.1 |
Specification note: STMP is a condensed phosphate and should not be confused with sodium tripolyphosphate or sodium hexametaphosphate. Confirm the intended food standard, permitted use and test method.
Qualification support
Product documents and quality requirements
Product documents
Request the current specification/TDS, SDS, test methods and representative or batch COA.
Food qualification
Request applicable HACCP, Kosher, Halal and ISO documents; verify product, site, scope and validity.
Independent reference
Review the NIH PubChem sodium trimetaphosphate record for identity context.
Storage and handling
Protect STMP from heat and moisture
- TemperatureStore at no more than 30°C under the stated storage conditions.
- EnvironmentKeep sealed in a cool, dry, ventilated place away from sunlight, heat, humidity and contamination.
- Workplace controlsFollow the current SDS and site procedures for dust control, hygiene and personal protection.
Buyer questions
Food grade STMP FAQ
What is food grade STMP used for?
Sodium trimetaphosphate is a cyclic sodium phosphate used in selected food systems for starch modification, dispersion, water management and product stability. Confirm legal use and performance for the exact application.
What is the reference assay?
The commercial reference specification lists ≥98.5%. Use the current signed specification and batch COA for acceptance.
What are the packing and minimum order?
The reference is 25 kg per bag, 24 MT per 20-foot container and a 500 kg minimum order.
Which documents should a buyer request?
Request specification/TDS, SDS, COA and applicable HACCP, Kosher, Halal and ISO documents for the exact source.
What information is needed for a quotation?
Provide grade or hydration form, application, specification, quantity, packing, destination, documents and delivery date.
Related food phosphates
Compare adjacent options
Sodium Tripolyphosphate (STPP)
Review identity, specification, applications and sourcing details for this related food-grade phosphate.
Sodium Hexametaphosphate (SHMP)
Review identity, specification, applications and sourcing details for this related food-grade phosphate.
Tetrasodium Pyrophosphate (TSPP)
Review identity, specification, applications and sourcing details for this related food-grade phosphate.
Specification-led sourcing
Request a food grade STMP quote
Share application, specification, quantity, packing, destination and required documents.