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Vitamins and nutraceutical actives

Calcium ascorbate dihydrate

Also known as Calcium L-ascorbate dihydrate, Calcium ascorbate (USP), Calcium ascorbate

CAS 5743-28-2Formula C12H18CaO14Molar mass 426.34 g/mol
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Calcium ascorbate dihydrate chemical structure, C12H18CaO14, CAS 5743-28-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5743-28-2
Formula
C12H18CaO14
Molar mass
426.34 g/mol
Physical form
Powder
HS code
293627
Category
Vitamins and nutraceutical actives
Illustrative photo, a shrink wrapped pallet of kraft paper sacks in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Calcium ascorbate dihydrate?

Plain description, key identifiers and synonyms

Calcium ascorbate dihydrate is a chemical substance with the molecular formula C12H18CaO14 and a molar mass of 426.34 g/mol. Its CAS registry number is 5743-28-2. The IUPAC name is calcium, bis((2R)-2-[(1S)-1,2-dihydroxyethyl]-3-hydroxy-5-oxo-2H-furan-4-olate), dihydrate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
calcium, bis((2R)-2-[(1S)-1,2-dihydroxyethyl]-3-hydroxy-5-oxo-2H-furan-4-olate), dihydrate
CAS number
5743-28-2 CAS number cross-checked
Molecular formula
C12H18CaO14
UNII
183E4W213W
InChIKey
RGJHWLDSRIHFKY-FWCDDDAWSA-L
InChI
InChI=1S/2C6H8O6.Ca.2H2O/c2*7-1-2(8)5-3(9)4(10)6(11)12-5;;;/h2*2,5,7-10H,1H2;;2*1H2/q;;+2;;/p-2/t2*2-,5+;;;/m00.../s1
Canonical SMILES
O.O.O=C1OC(C(O)CO)C(O)=C1[O-].O=C1OC(C(O)CO)C(O)=C1[O-].[Ca+2]
Isomeric SMILES
C([C@@H]([C@@H]1C(=C(C(=O)O1)[O-])O)O)O.C([C@@H]([C@@H]1C(=C(C(=O)O1)[O-])O)O)O.O.O.[Ca+2]

Synonyms

  • Calcium L-ascorbate dihydrate
  • Calcium ascorbate (USP)
  • Calcium ascorbate
  • Calcium L-ascorbate
  • Calcium (R)-5-((S)-1,2-dihydroxyethyl)-3,4-dihydroxyfuran-2(5H)-one salt dihydrate
  • calcium, (2R)-2-[(1S)-1,2-dihydroxyethyl]-3-hydroxy-5-oxo-2H-furan-4-olate, dihydrate
  • L-Ascorbic acid calcium dihydrate
  • INS NO.3
  • Ascorbic acid calcium dihydrate
  • Acetic acid, calcium salt, dihydrate
  • Calcium ascorbate dihydrate [EP monograph]
  • L-Ascorbic acid, calcium salt, hydrate (2:1:2)
  • calcium (R)-2-((S)-1,2-dihydroxyethyl)-4-hydroxy-5-oxo-2,5-dihydrofuran-3-olate dihydrate
  • Calcium (2R)-2-[(1S)-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2,5-dihydrofuran-3-olate--water (1/2/2)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Powderexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
426.34 g/molcalc.
Exact mass
426.0322 Dacalc.
LogP (octanol/water)
-7.24calc.
Topological polar surface area
283.1 Ųcalc.
Hydrogen bond donors
6calc.
Hydrogen bond acceptors
12calc.
Rotatable bonds
4calc.
Heavy atoms
27calc.
Rings
2calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
4calc.
Components
5calc.
Lipinski rule of five
Fails (2 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1C=CCO1

O=C1C=CCO1

1 ring, 6 atoms, the 2(5H)-Furanone ring system.

877 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Calcium ascorbate dihydrate suppliers

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All 9 suppliers
9 of 9 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

9 suppliers in 3 countries

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Calcium ascorbate dihydrate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Use classes: Food additives.

Functional uses

  • Antioxidant
  • Softener and conditioner

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Food additive

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Calcium ascorbate dihydrate is traded under.

HS 2936.27Indicative HS code

Vitamin C and its derivatives

World exports in 2024
$1.02B
+7.5% vs 2023, imports $1.07B
2019 to 2024
Top exporters
  1. China60.4%
  2. United States10.4%
  3. Netherlands9.2%
Top importers
  1. United States18.5%
  2. Netherlands9.9%
  3. Germany7.4%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Calcium ascorbate dihydrate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Calcium ascorbate dihydrate, based on the data on this page

What is Calcium ascorbate dihydrate?

Calcium ascorbate dihydrate is a chemical substance with the molecular formula C12H18CaO14 and a molar mass of 426.34 g/mol. Its CAS registry number is 5743-28-2. The IUPAC name is calcium, bis((2R)-2-[(1S)-1,2-dihydroxyethyl]-3-hydroxy-5-oxo-2H-furan-4-olate), dihydrate.

What is the CAS number of Calcium ascorbate dihydrate?

The CAS registry number of Calcium ascorbate dihydrate is 5743-28-2.

What is the molecular formula and weight of Calcium ascorbate dihydrate?

The molecular formula of Calcium ascorbate dihydrate is C12H18CaO14 and its molar mass is 426.34 g/mol.

What is Calcium ascorbate dihydrate used for?

Use classes: Food additives.

Is Calcium ascorbate dihydrate hazardous?

No GHS hazard classification for Calcium ascorbate dihydrate is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Calcium ascorbate dihydrate?

Calcium ascorbate dihydrate is usually classified under HS code 293627 (Vitamin C and its derivatives). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Calcium ascorbate dihydrate?

CompoundList lists 9 suppliers of Calcium ascorbate dihydrate in China, United States and India. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Calcium ascorbate dihydrate in India?

1 supplier in India list Calcium ascorbate dihydrate on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Calcium ascorbate dihydrate?

Suppliers quote Calcium ascorbate dihydrate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Calcium ascorbate dihydrate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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