3,4-Dihydroxy-3-cyclobutene-1,2-dione, 98+%, Thermo Scientific Chemicals

Description

3,4-Dihydroxy-3-cyclobutene-1,2-dione is used to produce diethoxy-cyclobutenedione by heating, pharmaceutical intermediates, squarylium dyes, and photoconducting squaraines; The dibutylester is used as a contact sensitizer in the treatment of alopecia and warts.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
3,4-Dihydroxy-3-cyclobutene-1,2-dione is used to produce diethoxy-cyclobutenedione by heating, pharmaceutical intermediates, squarylium dyes, and photoconducting squaraines; The dibutylester is used as a contact sensitizer in the treatment of alopecia and warts.

Solubility
Soluble in water.

Notes
Keep container tightly closed. Store in cool, dry conditions in well sealed containers.

Specifications

Chemical Identifiers

• CAS: 2892-51-5
• Molecular Formula: C4H2O4
• Molecular Weight (g/mol): 114.056
• MDL Number: MFCD00001334
• InChI Key: PWEBUXCTKOWPCW-UHFFFAOYSA-N
• Synonym: squaric acid, 3,4-dihydroxy-3-cyclobutene-1,2-dione, quadratic acid, 3-cyclobutene-1,2-dione, 3,4-dihydroxy, quadratsaeure, cyclobutenedione, dihydroxy, 1,2-diketo-3,4-dihydroxycyclobutene, dihydroxycyclobutenedione, unii-svr9d0vodw, dihydroxycyclobut-3-ene-1,2-dione
• PubChem CID: 17913
• ChEBI: CHEBI:52141
• IUPAC Name: 3,4-dihydroxycyclobut-3-ene-1,2-dione
• SMILES: C1(=C(C(=O)C1=O)O)O

• Melting Point: >300°C
• Flash Point: 190°C (374°F)
• Quantity: 100 g
• UN Number: UN3261
• Beilstein: 774275
• Solubility Information: Soluble in water.
• Formula Weight: 114.06
• Percent Purity: ≥98%
• Chemical Name or Material: 3,4-Dihydroxy-3-cyclobutene-1,2-dione

Safety and Handling

Hazard Category	H315-H319-H335
Hazard Statement	GHS H Statement H314-H318 Causes severe skin burns and eye damage. Causes serious eye damage.
Precautionary Statement	P261-P264b-P271-P280-P302+P352-P305+P351+P338-P312-P332+P313-P362-P501c
DOTInformation	Transport Hazard Class: 8; Packing Group: II; Proper Shipping Name: CORROSIVE SOLID, ACIDIC, ORGANIC, N.O.S.
EINECSNumber	220-761-4
RTECSNumber	GU1800000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only