Calcium Citrate | Anhydrous & Tetrahydrate | E333, Calcium Fortifier - - PREMIUM INGREDIENT

Calcium Citrate | Anhydrous & Tetrahydrate | E333, Food Grade Calcium Fortifier & Acidity Regulator

Categories:

Acidulants Mineral products

CAS No:

5785-44-4

3 / 1

Description

Certificates

Basic Info

Characteristics

Hazard Identification

Handling and Storage

Basic Information

Item	Calcium Citrate Anhydrous	Calcium Citrate Tetrahydrate
Product Name	Calcium Citrate, Anhydrous	Calcium Citrate, Tetrahydrate
Synonym	Tricalcium Citrate, Anhydrous	Tricalcium Citrate, Tetrahydrate
E Number	E333(iii)
Grade	Food Grade
CAS No.	813-94-5	5785-44-4
Molecular Formula	Ca₃(C₆H₅O₇)₂	Ca₃(C₆H₅O₇)₂ · 4H₂O
Standard Compliance	FCC, JECFA, CP
Certifications	ISO9001, HALAL, KOSHER
Appearance	White crystalline powder
Solubility	Slightly soluble in water
Calcium Content	Approx 24.1%	Approx 21.1%
Key Characteristics	Higher calcium content, low moisture absorption, suitable for low-moisture formulations	Good dispersibility, stable physical property, widely used commercial grade
Typical Applications	Tablets, capsules, dry premix blends	Dietary supplements, fortified beverages, dairy and functional foods

Product Overview

Calcium Citrate, also known as Tricalcium Citrate (E333(iii)), is a white crystalline organic calcium salt. It is widely used as calcium nutrient fortifier. Compared with inorganic calcium sources, it can be absorbed without strong gastric acid, making it gentle on the digestive tract. It also acts as pH buffer and mild chelating agent in food systems. It is supplied in two equivalent commercial forms: anhydrous and tetrahydrate, differing only in crystal water content and calcium content, while sharing the same core functions. It also has limited usage in industrial fields.

Core Characteristics

1Organic calcium source, does not require high gastric acid for absorption, mild to stomach

2Available in anhydrous and tetrahydrate forms, same core functionality, differing only in crystal water and calcium content

3Slightly soluble in water, stable under normal storage conditions

4Functions as pH buffer and chelator to stabilise food systems

Main Functions

1.Nutrient Fortifier Calcium Citrate serves as calcium source for nutritional fortification. It delivers bioavailable calcium and is easier for the human body to absorb than many inorganic calcium salts, suitable for dietary supplement and fortified food formulations.

2.pH Buffer It stabilises pH value in food systems, prevents drastic pH fluctuation and maintains consistent product quality.

3.Chelating Agent Chelates metal ions to reduce oxidation and discoloration, protecting flavour and colour stability of finished products.

4.Industrial Usage Applied in selected industrial processes as raw material.

Applications

Dietary Supplements Widely used in calcium tablets, powder supplements and capsule formulations. Both anhydrous and tetrahydrate grades are selected according to formulation requirements.

Fortified Foods & Beverages Used in fortified milk, plant-based drinks, functional beverages and fortified snack foods for calcium enrichment.

Bakery & Cereal Products Added to bread, cereals and grain-based products to boost calcium nutrition while stabilising dough properties.

Other Fields Minor industrial applications.

Packaging&Storage

packaging: 25kg food-grade plastic woven bag or kraft paper bag, inner food-grade PE lining.

Storage: Stored in dry and cool environment, away from moisture and high temperature.

Product name	Tricalcium citrate Tetrahydrate
cas no.	5785-44-4		Einecs No.	212-391-7
item	unit
item	unit	USP37	E333	FCC6	GB1903.14-2016
chracters		white crystalline powders
identification		pass test
assay	%	97.5-100.5	≥97.5	97.0-100.5	97.5-100.5
Loss on drying	%	10.0-13.3	≤14.0	10.0-14.0	10.0-14.0
heavy metals	ppm	≤20	≤5	/	/
arsenic	ppm	≤3	≤1	/	≤3
Lead	ppm	≤10	≤1	≤2	≤2
mercury	ppm	/	≤1	/	/
insolubles in Hcl	%	≤0.2	/	/	/
fluoride	ppm	≤30	≤30	≤30	≤30
oxalate	ppm	/	≤100	/	≤100
aluminum	ppm	/	infant food ≤30 non-infant food ≤	/	/
carbonate		/	pass test	/	/

Product Name:	Calcium citrate tetrahydrate	Other Name:	1,2,3-Propanetricarboxylic acid,2-hydroxy-,calcium salt,hydrate (2:3:4);Citric acid,calcium salt (2:3),tetrahydrate;1,2,3-Propanetricarboxylic acid,2-hydroxy-,calcium salt (2:3),tetrahydrate;Calcium citrate tetrahydrate;Tricalcium dicitrate tetrahydrate
CAS No.:	5785-44-4	Molecular Formula:	C6H8O7.3/2Ca.2H2O
InChIKeys:	InChIKey=INJHDYMGTXNTDG-UHFFFAOYSA-N	Molecular Weight:	570.49500
Exact Mass:	569.93700	HScode:	2918150000
Categories:	Acidity Regulators

PSA:	235.18000	XLogP3:	-3.21680
Appearance:	Clear Liquid	Boiling Point:	309.6ºC at 760 mmHg
Flash Point:	155.2ºC	Water Solubility:	H2O: 0.1 M HCl: 0.01 M at 20 °C, clear, colorless

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.