Food ingredient · Calcium phosphate · E341(ii)
Dicalcium phosphate, also called calcium hydrogen phosphate, is a food-grade calcium phosphate salt used in selected leavening systems, buffering, mineral fortification and processed-food formulations.
Include the required form, standard, quantity, destination and food application for a relevant proposal.
Product overview
Food grade dicalcium phosphate (DCP) is the calcium salt of phosphoric acid known chemically as calcium hydrogen phosphate or dibasic calcium phosphate. Its international food additive designation is INS 341(ii), and it may be supplied as anhydrous CaHPO4 or dihydrate CaHPO4·2H2O.
DCP is sparingly soluble in water. That property, together with its calcium and phosphorus content, makes grade, particle size and hydration form important purchasing variables. Buyers should match the specification to the intended process and destination-market rules.
Specify the hydration form
The forms differ in crystal-water content, formula weight and analytical behavior. State the required form on the purchase specification rather than ordering only by the abbreviation “DCP.”
Calcium hydrogen phosphate without water of crystallization. Its formula is CaHPO4 and the commonly referenced CAS number is 7757-93-9.
Calcium hydrogen phosphate containing two waters of crystallization. Its formula is CaHPO4·2H2O and its CAS number is 7789-77-7.
Food processing functions
Actual use levels and permitted food categories depend on the formulation and destination market. Complete technical trials and regulatory review before commercial use.
A calcium phosphate component in selected bakery and leavening formulations where controlled reaction behavior is required.
Used in suitable flour and bakery systems as a dough-conditioning ingredient and yeast nutrient source.
Supports mineral and acidity balance in formulations where a sparingly soluble phosphate salt is appropriate.
Provides calcium and phosphorus in qualifying fortified foods, premixes and nutrition formulations.
May support texture, stability or emulsification objectives in application-specific ingredient systems.
Suitable for selected powdered products and compound ingredient systems after compatibility testing.
Technical information
The values below reproduce the supplied purchasing specification in a consistent format. They are not a batch COA or a universal regulatory standard. Confirm the form, test methods and contractual limits before ordering.
| Test item | Unit | Reference specification |
|---|---|---|
| Calcium hydrogen phosphate (CaHPO4) content, anhydrous basis | % | 98.0–102.0 |
| P2O5 content | % | 50.0–52.5 |
| Arsenic (As) | % | ≤ 0.0003 |
| Fluoride (F) | % | ≤ 0.005 |
| Heavy metals (as Pb) | % | ≤ 0.0015 |
| Insoluble in hydrochloric acid | % | ≤ 0.05 |
| Loss on ignition | % | 24.5–26.5 (dihydrate); ≤ 8.5 (anhydrous) |
| Lead (Pb) | % | ≤ 0.0005 |
| Cadmium (Cd) | % | ≤ 0.0001 |
| Mercury (Hg) | % | ≤ 0.0001 |
Specification note: The supplied sheet appeared to contain OCR errors. “P₄O₆” has been normalized to the conventional DCP parameter P₂O₅, and the hydration-form CAS numbers have been corrected. Final acceptance must use the approved specification and batch COA.
For independent identity and functional-use context, see the FAO/WHO JECFA calcium hydrogen phosphate monograph and NIH PubChem compound record.
Storage & handling
Buyer questions
DCP is used in suitable food formulations as a leavening component, dough conditioner, buffer, calcium and phosphorus source, stabilizer and functional ingredient. Regulatory permission and dosage depend on the product and market.
Anhydrous DCP is CaHPO4. Dihydrate DCP is CaHPO4·2H2O and includes two waters of crystallization. This changes formula weight, analytical mass loss and some processing behavior.
No. Dicalcium phosphate (DCP), monocalcium phosphate (MCP) and tricalcium phosphate (TCP) are different calcium phosphate salts. Their calcium-to-phosphorus ratios, acidity, solubility and food functions differ.
The reference packing is 25 kg per bag, with a stated minimum order quantity of 500 kg. Reference loading is 22 metric tons per 20-foot container. Confirm palletizing and destination-specific loading before ordering.
They are listed in the supplied product information. Ask the sales team to provide current documents and confirm that each certificate covers the exact product, manufacturing site and shipment period required by your project.
Provide the hydration form, required specification or standard, particle-size requirement, quantity, packaging, destination country or port, intended food application and delivery date.
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Share the technical and logistics details that determine product selection and landed cost. Our team can then respond with relevant documents and a commercial proposal.