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Carboxylic acids and anhydrides

Dihydroxyfumaric acid dihydrate

Also known as 2,3-Dihydroxyfumaric acid dihydrate, (E)-2,3-dihydroxybut-2-enedioic acid, dihydrate, 2-Butenedioic acid, 2,3-dihydroxy-, hydrate (1:2), (2E)-

CAS 20688-70-4Formula C4H8O8Molar mass 184.10 g/mol
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Dihydroxyfumaric acid dihydrate chemical structure, C4H8O8, CAS 20688-70-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
20688-70-4
Formula
C4H8O8
Molar mass
184.10 g/mol
HS code
291719
Category
Carboxylic acids and anhydrides

What is Dihydroxyfumaric acid dihydrate?

Plain description, key identifiers and synonyms

Dihydroxyfumaric acid dihydrate is a chemical substance with the molecular formula C4H8O8 and a molar mass of 184.10 g/mol. Its CAS registry number is 20688-70-4. The IUPAC name is (E)-2,3-dihydroxybut-2-enedioic acid, dihydrate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-2,3-dihydroxybut-2-enedioic acid, dihydrate
CAS number
20688-70-4
Molecular formula
C4H8O8
InChIKey
LDRMCGGUXOJSDA-SEPHDYHBSA-N
InChI
InChI=1S/C4H4O6.2H2O/c5-1(3(7)8)2(6)4(9)10;;/h5-6H,(H,7,8)(H,9,10);2*1H2/b2-1+;;
Canonical SMILES
O.O.O=C(O)C(O)=C(O)C(=O)O
Isomeric SMILES
C(=C(/C(=O)O)\O)(\C(=O)O)/O.O.O

Synonyms

  • 2,3-Dihydroxyfumaric acid dihydrate
  • (E)-2,3-dihydroxybut-2-enedioic acid, dihydrate
  • 2-Butenedioic acid, 2,3-dihydroxy-, hydrate (1:2), (2E)-
  • 2,3-Dihydroxyfumaricaciddihydrate
  • (2E)-dihydroxybut-2-enedioic acid dihydrate
  • Dihydroxyfumaric acid dihydrate, technical, >=90% (T)

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
184.10 g/molcalc.
Exact mass
184.0219 Dacalc.
LogP (octanol/water)
-2.17calc.
Topological polar surface area
178.1 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
2calc.
Heavy atoms
12calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

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.

Dihydroxyfumaric acid dihydrate suppliers

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Dihydroxyfumaric acid 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

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Dihydroxyfumaric acid dihydrate is traded under.

HS 2917.19Indicative HS code

Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…

World exports in 2024
$718M
+8.1% vs 2023, imports $915M
2019 to 2024
Top exporters
  1. China46.6%
  2. United States13.7%
  3. Germany10.1%
Top importers
  1. United States16.2%
  2. Denmark11.8%
  3. Germany10.0%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Dihydroxyfumaric acid dihydrate, based on the data on this page

What is Dihydroxyfumaric acid dihydrate?

Dihydroxyfumaric acid dihydrate is a chemical substance with the molecular formula C4H8O8 and a molar mass of 184.10 g/mol. Its CAS registry number is 20688-70-4. The IUPAC name is (E)-2,3-dihydroxybut-2-enedioic acid, dihydrate.

What is the CAS number of Dihydroxyfumaric acid dihydrate?

The CAS registry number of Dihydroxyfumaric acid dihydrate is 20688-70-4.

What is the molecular formula and weight of Dihydroxyfumaric acid dihydrate?

The molecular formula of Dihydroxyfumaric acid dihydrate is C4H8O8 and its molar mass is 184.10 g/mol.

What is Dihydroxyfumaric acid dihydrate used for?

Known uses and roles of Dihydroxyfumaric acid dihydrate include building blocks in research and laboratory.

Is Dihydroxyfumaric acid dihydrate hazardous?

No GHS hazard classification for Dihydroxyfumaric acid 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 Dihydroxyfumaric acid dihydrate?

Dihydroxyfumaric acid dihydrate is usually classified under HS code 291719 (Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dihydroxyfumaric acid dihydrate?

Post a free request on CompoundList and suppliers of Dihydroxyfumaric acid dihydrate will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Dihydroxyfumaric acid dihydrate?

Suppliers quote Dihydroxyfumaric acid 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 Dihydroxyfumaric acid 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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