Squaric acid, 98%
Squaric acid, 98% (CAS 2892-51-5) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 5 g.
About Squaric acid, 98%
Zemixal supplies Squaric acid, 98% within its pharma Intermediates & Building Blocks portfolio. Key data (Synthesis): CAS 2892-51-5, formula C4H2O4 and molar mass 114.06 g/mol. Typical appearance is white to light yellow powder or crystals.
Use cases we see most often
- Fine chemical synthesis
- Dyes & pigments manufacture
Handling and storage
Reported physical data: melting point >300 °C. Classified under GHS with signal word Warning and hazard statements H315, H317, H319 and H335. Read the SDS before first use.
Standard pack sizes are 5 g, 25 g, 100 g and 5 x 1 kg, and custom quantities are quoted on request. Each lot travels with a batch certificate of analysis and a 16-section SDS. Request pricing online and we confirm availability, documentation and freight to your country.
Typical uses
- Fine chemical synthesis
- Dyes & pigments manufacture
Applications
Specifications and identifiers
| Product name | Squaric acid, 98% |
|---|---|
| Catalogue number | ZX-009272 |
| CAS number | 2892-51-5 |
| IUPAC name | 3,4-dihydroxycyclobut-3-ene-1,2-dione |
| Molecular formula | C4H2O4 |
| Molar mass | 114.06 g/mol |
| Exact mass | 113.9953 |
| Grade | Synthesis |
| Purity / assay | 98% |
| Physical form | Crystalline |
| Appearance | White to light yellow powder or crystals |
| Melting point | >300 °C |
| XLogP3 | -0.7 |
| H-bond donors / acceptors | 2 / 4 |
| Topological polar surface area | 74.6 Ų |
| HS code | 29144000 |
| InChIKey | PWEBUXCTKOWPCW-UHFFFAOYSA-N |
| SMILES | C1(=C(C(=O)C1=O)O)O |
| PubChem CID | 17913 |
| Synonyms | 3,4-Dihydroxy-3-cyclobutene-1,2-dione, Quadratic acid, 1,2-Diketo-3,4-dihydroxycyclobutene, Dihydroxycyclobutenedione, 3-Cyclobutene-1,2-dione, 3,4-dihydroxy-, dihydroxycyclobut-3-ene-1,2-dione, Cyclobutenedione, dihydroxy-, 1,2-Dihydroxycyclobutene-3,4-dione, 1,2-Dihydroxycyclobutenedione, 3,4-Dihydroxy-cyclobutene-1,2-dione, Diketocyclobutenediol, 4-08-00-02701 (Beilstein Handbook Reference) |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Warning
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements P261, P264, P264 + P265, P271, P272, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P333 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501
Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 5 g | Quoted on request | |
| 25 g | Quoted on request | |
| 100 g | Quoted on request | |
| 5 x 1 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
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