Buffering and acidity regulation
DSP can help establish or maintain pH in compatible cheese, beverage, jelly, dairy and ingredient systems.
Food grade phosphate · Sodium orthophosphate · INS 339(ii)
Food Grade Disodium Phosphate (DSP)
Disodium phosphate is a sodium orthophosphate used in selected food systems for buffering, acidity regulation, emulsifying-salt functions and water management.
- CAS number
- 7558-79-4
- INS number
- 339(ii)
- Formula
- Na2HPO4
- MOQ
- 500 kg
Reference assay≥98.0%
Standard packing25 kg bag
Container loading22 MT / 20' FCL
QualificationCOA and certificates on request
Direct product answer
What is food grade disodium phosphate?
Food grade disodium phosphate (DSP), formally disodium hydrogen phosphate, is INS 339(ii). CAS 7558-79-4 corresponds to anhydrous Na2HPO4; hydrated forms require separate formula and identity confirmation.
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 DSP used in food processing?
Performance depends on grade, dosage, formulation, process conditions and applicable food rules.
Water and protein management
The supplied information identifies water retention; evaluate protein interactions, texture and stability in the actual formulation.
Food application screening
Common food grade DSP applications
These are application-screening areas, not universal use approvals or guaranteed outcomes.
Processed cheese
May be used in qualified emulsifying-salt systems to support pH, mineral balance, melt and texture.
Beverages
Evaluate buffering, clarity, taste and compatibility with calcium, proteins and acids.
Jelly and desserts
Screen acidity regulation, gel interaction and storage stability in the complete recipe.
Ice cream
May support buffering and water management after compatibility trials with the dairy and stabilizer system.
Processed meat
Evaluate water retention, binding and yield under the actual salt, protein and heat process.
Culture media
The supplied information cites culture use; confirm grade, nutrient role and process requirements.
Supplied technical data
Food grade DSP 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 |
|---|---|---|
| Disodium phosphate content, as anhydrous Na2HPO4 | % | ≥98.0 |
| Arsenic (As) | % | ≤0.0003 |
| Fluoride (F) | % | ≤0.003 |
| Heavy metals (as Pb) | % | ≤0.001 |
| Water-insoluble matter | % | ≤0.2 |
| Lead (Pb) | % | ≤0.0004 |
| Loss on drying, Na2HPO4 | % | ≤5.0 |
| Loss on drying, Na2HPO4·2H2O | % | 18.0–22.0 |
| Loss on drying, Na2HPO4·12H2O | % | 61.0 |
Specification note: The supplied overview labels Na2HPO4 as “monohydrate,” although that formula is anhydrous, and the specification also lists dihydrate and dodecahydrate loss values. Confirm the exact hydration form, formula, CAS number and test basis before ordering.
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 FAO/WHO JECFA disodium hydrogen phosphate record for identity context.
Storage and handling
Protect DSP 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 DSP FAQ
What is food grade DSP used for?
Disodium phosphate is a sodium orthophosphate used in selected food systems for buffering, acidity regulation, emulsifying-salt functions and water management. Confirm legal use and performance for the exact application.
What is the reference assay?
The supplied sheet states ≥98.0%. Use the current signed specification and batch COA for acceptance.
What are the packing and minimum order?
The reference is 25 kg per bag, 22 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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Specification-led sourcing
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