The Sigma-Aldrich catalog lists 3 grades and pack sizes of Squaric acid (CAS 2892-51-5). Pick the code you need and request a quote for price and lead time from Klar Chem.
| CAS | 2892-51-5 |
|---|---|
| Molecular formula | C4H2O4 |
| Molecular weight | 114.06 g/mol |
| IUPAC name | 3,4-dihydroxycyclobut-3-ene-1,2-dione |
| Synonyms | Quadratic acid · 3,4-dihydroxycyclobut-3-ene-1,2-dione · Quadratsaeure · 1,2-Diketo-3,4-dihydroxycyclobutene · Dihydroxycyclobutenedione · SVR9D0VODW |
Irritant
⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).
| Brand | Product / grade | Code | |
|---|---|---|---|
| Sigma | 3,4-DIHYDROXY-3-CYCLOBUTENE-1,2-DIONE | 123447-100G 123447-25G 123447-5G |
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For information only; specifications and availability are confirmed at quotation. Prices are not listed.
