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Home/Compounds/CAS 2892-51-5
Formula C4H2O4MW 114.06Research-use catalog entryCOA/SDS by request

Squaric acid

CAS Number: 2892-51-5

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Loading RDKit molecule structure...
InChIKey: PWEBUXCTKOWPCW-UHFFFAOYSA-NC4H2O4 | MW 114.06

Chemical Absolute Identifiers

CAS Number

2892-51-5

PubChem CID

17913

Molecular Formula

C4H2O4

Molecular Weight

114.06 g/mol

Exact Mass

113.995309

InChIKey

PWEBUXCTKOWPCW-UHFFFAOYSA-N

IUPAC Name

3,4-dihydroxycyclobut-3-ene-1,2-dione

SMILES String

C1(=C(C(=O)C1=O)O)O

Physical Properties

No physical property values available.

Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.

Catalog Facts

Structural features

Squaric acid (CAS 2892-51-5) is listed in the Materials Science portfolio, with molecular formula C4H2O4 and molecular weight 114. 06 g/mol.

Sourcing context

Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.

Research use context

Intended for materials chemistry research and formulation screening workflows.

Documentation needs

COA/SDS status, availability, lead time, pack size, and shipment documentation can be confirmed during quotation.

Applications & Classification

MOF and COF MaterialsMaterials ScienceResearch intermediateCustom synthesis building blockResearch chemical sourcingCustom synthesis and catalog availability reviewCOA, SDS, pricing, and fulfillment workflow

Safety & Handling

Handling & Storage

  • Including any incompatibility Close tightly.
  • Store in a well-ventilated area.
  • Avoid contact with skin and eyes.

PPE

Respiratory protection if needed

First Aid

  • Do not give anything to an unconscious person.
  • Rinse mouth with water.

Stability / Reactivity

  • Reactivity and reaction.
  • Carbon monoxide, carbon dioxide.

Disposal

  • Waste The remaining and non-recyclable solutions should be handed over to a licensed company for disposal.
  • Contact a professional organization with a waste disposal license to handle this substance.
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Fire Fighting

  • If necessary, wear a self-contained breathing apparatus for firefighting.

Accidental Release

  • Do not generate dust when collecting and disposing.
  • Sweep and shovel up.

For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.

Preliminary Safety Reference

For supplier-issued SDS or COA, submit a documentation request.

Safety Reference / SDS Request

Names & Synonyms / External Identifiers

Chemical Name

Squaric acid

Names & Synonyms

Quadratic acidQuadratsaeure1,2-Diketo-3,4-dihydroxycyclobuteneDihydroxycyclobutenedione3,4-Dihydroxy-3-cyclobutene-1,2-dione
Show all synonyms
3-Cyclobutene-1,2-dione, 3,4-dihydroxy-dihydroxycyclobut-3-ene-1,2-dioneCyclobutenedione, dihydroxy-1,2-Dihydroxycyclobutene-3,4-dione1,2-Dihydroxycyclobutenedione3,4-Dihydroxy-cyclobutene-1,2-dioneCYCLOBUTENE-1,2-DIONE, 3,4-DIHYDROXY-1,2-dioxo-3,4-dihydroxycyclobutene1,2-dioxo-3,4-dihydroxycyclobut-3-ene3,4-Dihydroxy-3-cyclobutene-1,2-dione-d2CCRIS 67931,2-DIHYDROXY-1-CYCLOBUTEN-3,4-DIONE1,2-DIHYDROXY CYCLOBUTENEDIONE3,2-dione
External Identifiers
EC NUMBER: 220-761-4EC NUMBER: 693-144-4DSSTOX SUBSTANCE ID: DTXSID9049409CHEBI ID: CHEBI:52141UNII: SVR9D0VODWHMDB ID: HMDB0258453METABOLOMICS WORKBENCH ID: 58124NCI THESAURUS CODE: C220882WIKIDATA ID: Q903298
Experimental Spectrum References
13C NMR Spectra1D NMR Spectra1H NMR SpectraATR-IR Spectra — Forensic Spectral ResearchFTIR SpectraRaman Spectra — Bio-Rad LaboratoriesUV-VIS Spectra

Documentation & Compliance Facts

Compliance Facts

Shipment review: Required

Documentation available by request

Certificate of Analysis (COA): By request

Supplier Safety Data Sheet (SDS): By request

Purity and pack size confirmation: By request

Availability and lead time review: Confirmed by RFQ

Shipment documentation review: By request

For supplier-issued documentation by request, use the RFQ actions on this page.Review preliminary safety reference

What happens after RFQ

  1. 1We review the CAS identity, quantity, and documentation request.
  2. 2We check sourcing options, supplier availability, COA/SDS, purity, pack size, and lead time.
  3. 3We review destination and shipment documentation needs when applicable.
  4. 4We follow up with a quotation or clarification request.

Text Reference Cues

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Non-public related references

Cyclohexane-1,2,3,4,5,6-hexaone octahydrateCAS 7255-28-9
Tetrafluoro-4-hydroxybenzoic acidCAS 652-34-6
2,3,5,6-TetrafluorophenolCAS 769-39-1
Phenol, 4-chloro-2,3,5,6-tetrafluoro-CAS 4232-66-0
4-Bromo-2,3,5,6-tetrafluorophenolCAS 1998-61-4

Non-public references are shown as text only and do not imply equivalence, availability, or shared use.

Catalog navigation

Related Catalog Entries

Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.

CAS 1227-44-7N,N'-(Di-p-methoxyphenyl)ureaCAS 1002310-00-0Tert-butyl 1-(2-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethylcarbamateCAS 1005174-17-3(E)-3-(2-Propyl-6-(trifluoromethyl)pyridin-3-yl)acrylic acidCAS 1018125-49-92-(3-Cyclopropyl-6-ethyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acidCAS 1018128-07-8Isopropyl 4-chloro-2-methylquinoline-6-carboxylateCAS 1018142-22-76-cyclopropyl-1-(2,2-difluoroethyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acidCAS 1018144-00-72-(3-Cyclopropyl-6-isopropyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid

RFQ questions for CAS 2892-51-5

What are the key identifiers for Squaric acid (CAS 2892-51-5)?

Squaric acid is identified by CAS 2892-51-5, with molecular formula C4H2O4, molecular weight 114.06, InChIKey PWEBUXCTKOWPCW-UHFFFAOYSA-N.

Can I request a COA for CAS 2892-51-5?

Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.

Can I request supplier SDS for Squaric acid?

Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.

Is CAS 2892-51-5 available for quotation?

Availability, pack size, lead time, and pricing are confirmed through RFQ.

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