Starch modification: define the starch source, reaction process and intended modified-starch identity.
SODIUM PHOSPHATES
Sodium Trimetaphosphate STMP
A cyclic condensed phosphate for process-specific discussion in starch modification.
INGREDIENT OVERVIEW
STMP: product profile
Sodium trimetaphosphate is a cyclic condensed phosphate. It is not another name for sodium tripolyphosphate or for the commercial polyphosphate glass commonly called SHMP.
Also known as: STMP · Trisodium trimetaphosphate · Sodium trimetaphosphate cyclic
Our STMP discussion concerns starch-modification processes. The cyclic phosphate reagent and the modified starch produced from it have different identities and qualification requirements; a reagent specification alone does not characterize the finished ingredient.
Prepare product inquiryAPPLICATION SCREENING
Where it may fit.
These are technical starting points, not finished-product performance or use authorizations.
Process qualification: identify the required reagent purity, residual controls and finished-starch tests.
GRADE & PROCESS
Specify the reagent and the resulting starch separately
Choosing the material
STMP is distinct from tripolyphosphate and commercial SHMP. Selecting by similar initials can lead to the wrong raw material. Describe the intended starch modification and the required final starch identity in the inquiry.
Planning a useful comparison
A process comparison should track starch source, treatment conditions and the relevant finished-starch identity and residual tests. Functional observations can then address the intended food’s viscosity, texture or stability requirements.
SPECIFICATION REFERENCE
Bespring reference specification
Material: Sodium trimetaphosphate, cyclic Na₃(PO₃)₃
Selected limits from Bespring’s STMP specification sheet, for reagent comparison in starch-modification discussions. These values do not establish permission for direct addition to finished foods.
Source: Bespring Chemical · Undated reference sheet · Bespring product reference
These selected composition and physical fields are a reference for comparison, not a complete food-grade acceptance specification or an IngredientCore supply guarantee. Ask us for the specification, test methods and impurity requirements for the proposed grade and source.
On narrow screens, scroll within the table if needed.
| Parameter / stated test conditions | Reference specification | Unit |
|---|---|---|
| Sodium trimetaphosphate content | ≥ 98.5 | % |
| P₂O₅ content | ≥ 68.0 | % |
| Insoluble matter | ≤ 0.1 | % |
| pH — 1% solution | 6.0–8.0 | Dimensionless |
The source states the pH concentration but not its basis or temperature. It gives no analytical methods for these selected rows.
Request specificationGRADE & SPECIFICATION
Key parameters to confirm.
Define the process and resulting material before discussing grade requirements. A reference to modified-starch manufacture is not a general permission to add STMP directly to foods.
These are procurement questions, not a supplied specification. Units below indicate reporting context, not acceptance limits. Compare the current grade, source, document revision and test method before agreeing values.
If columns extend beyond the frame, scroll the table horizontally.
| Parameter | What to request | Units or test context | Why it matters |
|---|---|---|---|
| Reagent identity | Exact material and purity method | Named reagent; method | Prevent confusion between condensed phosphates. |
| Process requirements | Starch source, intended modification and impurity controls | Process specification | Link material selection to the manufacturing purpose. |
| Finished-starch evidence | Required identity and residual/quality tests | Applicable methods | Reagent purity alone does not qualify the finished starch. |
PURCHASING QUESTIONS
STMP: what to ask next.
Should I use STMP like a general food buffer?
The discussion here concerns starch-modification processes. Direct food addition needs a separate technical and destination-market review.
What should accompany my inquiry?
Include the exact material and form, food application, destination market and target specification. Request current records for the proposed grade and source, and identify any methods your quality team requires.
Packaging, handling & ordering
Include the manufacturing process and raw-material handling requirements. Request the proposed reagent specification and SDS together with source-specific pack and storage information.
Share your quantity and required delivery timing. Minimum order, sample terms, packing and the stated shelf life belong to the specific quotation and source records.
Identity reference points
These sources support technical identity checks. They do not establish a supplied grade, source approval or permission in every food or market.
DOCUMENT REQUEST
Request documents for STMP.
Tell us the material form, intended use, destination market and document purpose. Request Reagent specification, SDS and process-relevant source records. Records depend on the proposed grade and source; any certificate applies only within its stated entity, site and product scope.
NEXT STEP
Prepare product inquiry Bring us your application brief.
Include the food category, target function, expected volume, destination market and documents you need.