This Mono-Dicalcium Phosphate 21% buying guide is written for feed mills, premix producers and distributors. It explains what MDCP is, how it compares with other feed phosphates, which values to check on the certificate of analysis and what shapes the price you pay per ton.

Mono-Dicalcium Phosphate 21% buying guide: Key Facts
| Product | Mono-Dicalcium Phosphate 21% |
|---|---|
| CAS number | 7758-23-8 |
| Formula | CaH4O8P2 |
| Appearance | White to off-white granules or powder |
| Packaging | 25kg bag 50kg bag 100kg bag |
| Transport class | Not classified for transport; confirm on the SDS |
| List price | USD 425.00 per MT (volume orders quoted individually) |
| Category | Special Use Chemicals |
What Mono-Dicalcium Phosphate 21% Is
Mono-dicalcium phosphate (MDCP) is a feed phosphate that contains a mix of monocalcium phosphate and dicalcium phosphate. The “21%” refers to its total phosphorus (P) content. It is supplied as white to off-white granules or powder and is used to supply phosphorus and calcium, two minerals animals need for bone formation, growth, fertility and energy metabolism.
Typical applications include:
- compound feeds for poultry, pigs and ruminants;
- aquaculture feeds;
- mineral premixes, where it also works as a carrier.
Phosphorus is often one of the more expensive nutrients in a feed formula, so choosing the right phosphate source has a direct effect on ration cost. Our guide to animal health chemicals for feed and farm operations covers the wider procurement picture.
MDCP vs MCP and DCP: Which Feed Phosphate to Buy
Feed phosphates are usually compared by phosphorus content and how much of that phosphorus the animal can use. In general, the more monocalcium phosphate a product contains, the higher its water solubility and digestibility tend to be.
| Product | Nominal phosphorus | Typical position |
|---|---|---|
| Monocalcium Phosphate 22% (MCP) | 22% P | Highest P and usually highest digestibility |
| Mono-Dicalcium Phosphate 21% (MDCP) | 21% P | Balance of solubility, calcium and cost |
| Dicalcium Phosphate 18% (DCP) | 18% P | More calcium, lower P per ton |
MDCP is often chosen when a nutritionist wants good phosphorus availability without paying for full MCP. The right choice depends on species, formula and local prices, so ask your nutritionist to compare the options on cost per kilogram of available phosphorus. You can also see our monocalcium phosphate listing.

Specifications to Check Before You Buy Mono-Dicalcium Phosphate 21% for Animal Feed
Before you buy Mono-Dicalcium Phosphate 21% for animal feed, ask the supplier for a specification and a lot COA showing:
| Parameter | What buyers usually request | Why it matters |
|---|---|---|
| Total phosphorus (P) | 21% minimum | The main nutrient you are paying for |
| Calcium (Ca) | Stated range, often mid-teens % | Needed to balance the Ca:P ratio |
| Fluorine (F) | Low, stated as a maximum | Excess fluorine is harmful; feed rules set limits |
| Heavy metals (As, Pb, Cd, Hg) | Within feed regulations | Legal compliance and animal safety |
| Moisture and particle size | Stated limits | Affects flow, mixing and caking |
These are typical buyer requests, not guarantees. Always confirm the values for your lot on the COA. In the European Union, limits for undesirable substances in feed, including fluorine and heavy metals in phosphates, are set by Directive 2002/32/EC; other countries have their own rules, so check the requirements of your market.
Mono-Dicalcium Phosphate 21% Price: What Drives It
Our current Mono-Dicalcium Phosphate 21% price is shown in the key facts table above. When you compare offers, these factors explain most of the gap:
- Phosphate rock and phosphoric acid costs. These are the main raw materials, so global phosphate markets move feed phosphate prices.
- Guaranteed phosphorus. Compare on cost per kilogram of P, not only price per ton.
- Form. Granular and powder grades can be priced differently, and granules usually flow and mix with less dust.
- Packaging. We supply 25 kg, 50 kg and 100 kg bags; smaller bags cost more per ton but suit manual handling.
- Incoterm and volume. Full containers and regular orders are priced better than part loads.
Mono-Dicalcium Phosphate 21% Import: Working with a Bulk Supplier
MDCP is generally not classified as dangerous goods for transport, which keeps shipping simple, but always confirm this on the safety data sheet. The product is hygroscopic, so for a smooth Mono-Dicalcium Phosphate 21% import:
- keep bags sealed, on pallets and under cover;
- protect them from humidity during transit and in the warehouse;
- use stock first-in, first-out to avoid caking.
A reliable Mono-Dicalcium Phosphate 21% bulk supplier should provide a COA per lot, the SDS, packing list, commercial invoice, bill of lading and, where your authorities require them, a certificate of origin and any feed registration documents. Our quality control and logistics and shipping pages explain how we handle documents and containers. For product background, the PubChem record for calcium dihydrogen phosphate lists physical data.
Send your quantity, bag size and destination port through the quote form, or browse more products in our special use chemicals range.
From USD 425 / MT
Send grade, quantity and destination port for a written quotation.
Related Products Buyers Order With Mono-Dicalcium Phosphate 21%
Frequently asked questions
What does 21% mean in Mono-Dicalcium Phosphate 21%?
It is the minimum total phosphorus (P) content of the product. Calcium is supplied as well and is stated separately on the specification.
Is MDCP better than DCP for feed?
MDCP usually has more phosphorus per ton and a higher share of water-soluble phosphate than DCP 18%. Which is better depends on your formula and prices, so compare cost per kilogram of available phosphorus.
What packaging is available?
We currently offer 25 kg, 50 kg and 100 kg bags. Container loads and palletising are confirmed in your quotation.
Which documents come with each shipment?
A certificate of analysis per lot, the safety data sheet, packing list, commercial invoice and bill of lading, plus a certificate of origin when your country requires it.
Need a bulk quotation for Mono-Dicalcium Phosphate 21%? Send your requirements to Anflo or email sales@anflointerchem.shop.



















