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
Product overview
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.
Commercial reference limits and official identity information are provided below. 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.
Commercial specifications
Food grade DSP reference specification
The following commercial reference limits are separate from batch COA results. Agree the hydration form, analytical basis and test methods in the specification for your order.
| 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: Na2HPO4 is the anhydrous formula and must not be described as a monohydrate. The table also includes separate dihydrate and dodecahydrate drying-loss entries. Specify the hydration form, corresponding formula and CAS, and the applicable test basis for your order.
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 FAO/WHO JECFA disodium hydrogen phosphate record for identity context.
Storage and handling
Protect DSP from heat and moisture
- TemperatureStore at no more than 30°C under the stated product 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 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 commercial reference specification lists ≥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.
Related food phosphates
Compare adjacent options
Sodium Dihydrogen Phosphate (MSP)
Review identity, specification, applications and sourcing details for this related food-grade phosphate.
Trisodium Phosphate (TSP)
Review identity, specification, applications and sourcing details for this related food-grade phosphate.
Dicalcium Phosphate (DCP)
Review identity, specification, applications and sourcing details for this related food-grade phosphate.
Application and selection guides: Processed Cheese Emulsifying Salts & Dairy Stabilizers. Use the guides for process questions; confirm the exact supplied grade separately.
Specification-led sourcing
Request a food grade DSP quote
Share application, specification, quantity, packing, destination and required documents.