CompoundList

Formic anhydride

Also known as formyl formate, Formic acid, anhydride, formic acid anhydride

CAS 1558-67-4Formula C2H2O3Molar mass 74.04 g/mol
Formic anhydride chemical structure, C2H2O3, CAS 1558-67-4
2D chemical structure

Key facts

What buyers check first

CAS number
1558-67-4
Formula
C2H2O3
Molar mass
74.04 g/mol
HS code
291513
Category
Carboxylic acids and anhydrides

What is Formic anhydride?

Plain description, key identifiers and synonyms

Formic anhydride is an acyclic carboxylic anhydride.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
formyl formate
CAS number
1558-67-4 CAS number cross-checked
Molecular formula
C2H2O3
UNII
DG7TRR6KVW
InChIKey
VGGRCVDNFAQIKO-UHFFFAOYSA-N
InChI
InChI=1S/C2H2O3/c3-1-5-2-4/h1-2H
SMILES (canonical and isomeric)
C(=O)OC=O

Synonyms

  • formyl formate
  • Formic acid, anhydride
  • formic acid anhydride
  • Formic acid, anhydride (9CI)

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
74.04 g/molcalc.
Exact mass
74.0004 Dacalc.
LogP (octanol/water)
-0.68calc.
Topological polar surface area
43.37 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
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.

Formic anhydride suppliers

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Formic anhydride price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Formic anhydride is traded under.

HS 2915.13Indicative HS code

Esters of formic acid

World exports in 2024
$35.7M
+18.4% vs 2023, imports $44.8M
2019 to 2024
Top exporters
  1. China21.7%
  2. India * partner reported17.9%
  3. United Kingdom15.7%
Top importers
  1. United States27.1%
  2. Saudi Arabia13.4%
  3. Brazil5.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Formic anhydride, based on the data on this page

What is Formic anhydride?

Formic anhydride is an acyclic carboxylic anhydride.

What is the CAS number of Formic anhydride?

The CAS registry number of Formic anhydride is 1558-67-4.

What is the molecular formula and weight of Formic anhydride?

The molecular formula of Formic anhydride is C2H2O3 and its molar mass is 74.04 g/mol.

Is Formic anhydride hazardous?

No GHS hazard classification for Formic anhydride 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 Formic anhydride?

Formic anhydride is usually classified under HS code 291513 (Esters of formic acid). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Formic anhydride?

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What is the price of Formic anhydride?

Suppliers quote Formic anhydride 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 Formic anhydride

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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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