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
Direct product answer
What is food grade sodium trimetaphosphate?
Food grade sodium trimetaphosphate (STMP) is a cyclic condensed phosphate listed in the supplied sheet as Na3(PO3)3, CAS 7785-84-4, with a reference content of at least 98.5%.
This page separates the supplied commercial specification from independent identity references. 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
The supplied application information identifies water holding, softening, adhesion, dispersion and stabilization functions.
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
The supplied information cites reduced discoloration and vitamin C decomposition; validate these outcomes in shelf-life trials.
Supplied technical data
Food grade STMP reference specification
The values below reproduce the supplied product sheet. They are not a batch COA or a universal regulatory standard. Confirm the current signed specification and methods before approval.
| 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
Documents and evidence to request
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
- TemperatureThe supplied guidance states storage at no more than 30°C.
- 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 supplied sheet states ≥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.
Editorial review: Bespring Chemical technical and export team · Last reviewed 2026-07-20
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Sodium Tripolyphosphate (STPP)
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Sodium Hexametaphosphate (SHMP)
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Tetrasodium Pyrophosphate (TSPP)
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Specification-led sourcing
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