Acids & Salts Available — Bulk Only

Monocalcium Phosphate (MCP)

CAS 7758-23-8 · Formula CaH4O8P2 · MW 234.05 g/mol

A fast-acting leavening acid and calcium-phosphate nutrient for baking, feed, and fertilizer. It is used as a leavening acid and acidulant in baking powders and self-rising flours, as a calcium-phosphorus mineral supplement in foods and animal feeds, and as a fertilizer.

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HS Code
2835.26
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
Thickening / Rheology · Viscosity Modification
Functional Roles
CALCIUM PHOSPHATE
ABRASIVEANTIPLAQUEBUFFERINGBULKINGORAL CAREVISCOSITY CONTROLLING
Applications & Use Cases
  • Leavening acid: Acidulant in baking powders and self-rising flours.
  • Food and feed mineral: Calcium-phosphorus supplement in foods and animal feeds.
  • Fertilizer: Phosphate nutrient source.
  • Dairy stabilizer: Stabilizer for milk products.
  • Industrial: Used in enameling, glass manufacturing, and as a plastics stabilizer.
Physical Properties
Density
2.220 @ 18 °C/4 °C
Solubility
Solubility: Cold water 1.8 g/100 cc @ 30 °C; decomposes in hot water. /Calcium phosphate monobasic monohydrate/
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2835 . 26
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.35
Internationally harmonized (WCO HS)
Subheading 2835.26
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
7758-23-8
Molecular Formula
CaH4O8P2
Molecular Weight
234.05 g/mol
IUPAC Name
calcium bis(dihydrogen phosphate)
INCI Name
CALCIUM PHOSPHATE
PubChem CID
InChI Key
YYRMJZQKEFZXMX-UHFFFAOYSA-L
Synonyms & Trade Names
CALCIUM PHOSPHATE MONOBASIC Calcium dihydrogen phosphate Acid calcium phosphate Monobasic calcium phosphate Monocalcium orthophosphate Calcium bis(dihydrogen phosphate) Primary calcium phosphate Calcium monobasic phosphate Calcium phosphate (1:2) Phosphoric acid, calcium salt (2:1) C 38 (phosphate) Calcium phosphate, monobasic Calcium diorthophosphate Calcium tetrahydrogen phosphate Calcium tetrahydrogen orthophosphate Calcium bisphosphate Calcium hydrogen phosphate (Ca(H2PO4)2)
Full Description

Monocalcium phosphate (MCP, calcium bis(dihydrogenphosphate); CAS 7758-23-8) is an acidic calcium phosphate salt. It is used as a leavening acid and acidulant in baking powders and self-rising flours, as a calcium-phosphorus mineral supplement in foods and animal feeds, and as a fertilizer. It also serves as a dairy stabilizer and in enameling and glass manufacturing.

Frequently Asked Questions

What is monocalcium phosphate?

Monocalcium phosphate (MCP, calcium bis(dihydrogenphosphate); CAS 7758-23-8) is an acidic calcium phosphate salt. It is supplied as a leavening acid and acidulant, a calcium-phosphorus mineral source, a fertilizer, and an industrial additive.

What is monocalcium phosphate used for?

MCP is used as a leavening acid and acidulant in baking powders and self-rising flours, as a calcium-phosphorus mineral supplement in foods and animal feeds, and as a phosphate fertilizer. It also serves as a dairy stabilizer and in enameling, glass manufacturing, and as a plastics stabilizer.

Is monocalcium phosphate the same as cream of tartar?

No. Cream of tartar is potassium bitartrate, an organic acid salt, while monocalcium phosphate is an inorganic acidic calcium phosphate. Both can act as leavening acids that react with baking soda, but they are different compounds with different reaction rates and are not interchangeable on a one-to-one basis.

What is the chemical formula and another name for monocalcium phosphate?

Monocalcium phosphate has the formula CaH4O8P2 (CAS 7758-23-8) and is also known as MCP and calcium bis(dihydrogen phosphate); a monohydrate form also exists. Specify anhydrous or monohydrate when ordering, and confirm against the CoA.

How is bulk monocalcium phosphate packaged and ordered?

RawSource supplies MCP in bulk packaging such as bags and super sacks to food, feed, and industrial customers, in food-grade and technical grades. Pricing depends on grade and volume, so submit a bulk quote with your target grade; HS heading is 2835.26 and a CoA and SDS accompany each shipment.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.