Request Quote
Acids & Salts Available — Bulk Only

Calcium Citrate Tetrahydrate (Tricalcium Citrate Tetrahydrate)

CAS 5785-44-4 · Formula C12H18Ca3O18 · MW 570.5 g/mol

The hydrated calcium citrate grade supplying soluble calcium for fortified food and supplement applications. It is used as a calcium-fortification and supplement ingredient, a sequestrant, and a buffer in foods, and as an anticaking agent in dry mixes.

Part of Acids & Salts
Request SDS
HS Code
2918.15
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
Chelation / Sequestration · pH Adjustment
Functional Roles
Chelation / Sequestration pH Adjustment
Industries Served
Food & Beverage HI&I Cleaning Water Treatment
Applications & Use Cases
  • ▸ Calcium fortifier: Calcium source for fortified foods.
  • ▸ Supplement ingredient: Used in calcium supplement formats.
  • ▸ Sequestrant/buffer: Sequestering and buffering agent in foods.
  • ▸ Anticaking agent: Free-flow agent in dry mixes.
Physical Properties
Physical Description
Odorless solid; [Merck Index] Beige powder; [Sigma-Aldrich MSDS]
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.

Request SDS →
HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2918 . 15
Chapter 29
Organic chemicals
Heading 29.18
Internationally harmonized (WCO HS)
Subheading 2918.15
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
5785-44-4
Molecular Formula
C12H18Ca3O18
Molecular Weight
570.5 g/mol
IUPAC Name
tricalcium;bis(2-hydroxypropane-1,2,3-tricarboxylate);tetrahydrate
PubChem CID
5282392
InChI Key
LNIZKKFWMDARJV-UHFFFAOYSA-H
Synonyms & Trade Names
Calcium citrate tetrahydrate Calcium citrate (USP) tricalcium;2-hydroxypropane-1,2,3-tricarboxylate;tetrahydrate 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, calcium salt (2:3), tetrahydrate Calcium 2-hydroxypropane-1,2,3-tricarboxylate tetrahydrate Calcium citrate tribasic tetrahydrate Citracal (TN) Calcium Cltrate tetrahydrate CALCIUM CITRATE [II] CALCIUM CITRATE [FCC] C12H18Ca3O18
Full Description

Calcium Citrate Tetrahydrate (CAS 5785-44-4) is the tetrahydrate calcium salt of citric acid. It is used as a calcium-fortification and supplement ingredient, a sequestrant, and a buffer in foods, and as an anticaking agent in dry mixes.

Frequently Asked Questions

What is calcium citrate tetrahydrate?

Calcium citrate tetrahydrate (CAS 5785-44-4, C12H18Ca3O18) is the tetrahydrate calcium salt of citric acid — the citrate salt crystallized with four waters of hydration. This grade is supplied USP/FCC.

What is calcium citrate tetrahydrate used for?

It is used as a calcium-fortification and supplement ingredient, a sequestrant, and a buffer in foods, and as an anticaking (free-flow) agent in dry mixes.

What is the difference between calcium citrate and calcium citrate tetrahydrate?

The tetrahydrate carries four molecules of water of crystallization within its structure, whereas anhydrous calcium citrate does not. This affects calcium-by-weight, moisture, and handling, so the two grades are specified separately.

Does RawSource supply USP/FCC calcium citrate tetrahydrate in bulk?

Yes. RawSource distributes USP/FCC calcium citrate tetrahydrate powder in bulk bags and supersacks to manufacturers. Send your target volume for a quote.

Can RawSource provide a CoA and SDS for this grade?

Yes. A Certificate of Analysis and Safety Data Sheet are provided with shipments. Request current USP/FCC documentation against CAS 5785-44-4 with your RFQ.

Related Products
Hydrochloric Acid (Muriatic Acid, HCl)
CAS 7647-01-0 · ClH
Acids & Salts
Dimethyloldihydroxyethylene Urea (DMDHEU)
CAS 1854-26-8 · C5H10N2O5
Acids & Salts
Ferric Sodium EDDHA (o,o-EDDHA Fe Chelate, 6% Fe)
CAS 16455-61-1 · C18H24FeN2NaO6+
Acids & Salts
Polyferric Sulfate (PFS)
CAS 10028-22-5 · Fe2O12S3
Acids & Salts
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.
Bulk & Specialty Sourcing

Ready to Source Calcium Citrate Tetrahydrate (Tricalcium Citrate Tetrahydrate)?

Our procurement team handles specification confirmation, lead time, and logistics.

Request a Quote Browse the Catalog