339792

3,4-Dibutoxy-3-cyclobuten-1,2-dion

98%

• Synonym(e): Dibutyl-squarat
• Lineare Formel: [CH₃(CH₂)₃O]₂C₄(=O)₂
• CAS-Nummer: 2892-62-8
• Molekulargewicht: 226.27
• MDL-Nummer: MFCD00037150
• UNSPSC-Code: 12352100
• PubChem Substanz-ID: 24860681
• NACRES: NA.22

Eigenschaften

• Qualitätsniveau: 200
• Assay: 98%
• Form: liquid
• Brechungsindex: n20/D 1.494 (lit.)
• bp: 139 °C/0.5 mmHg (lit.)
• Dichte: 1.047 g/mL at 25 °C (lit.)
• Funktionelle Gruppe: ether; ketone
• SMILES String: CCCCOC1=C(OCCCC)C(=O)C1=O
• InChI: 1S/C12H18O4/c1-3-5-7-15-11-9(13)10(14)12(11)16-8-6-4-2/h3-8H2,1-2H3
• InChIKey: XBRWELTXMQSEIN-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

3,4-Dibutoxy-3-cyclobutene-1,2-dione is the dialkyl ester of squaric acid.

Anwendung

3,4-Dibutoxy-3-cyclobutene-1,2-dione was used in the synthesis of novel semisquarylium dye, useful for highly selective Hg²⁺ sensing in aqueous media. It was also employed in the synthesis of 3-butoxy-4-(1,3,3-trimethyl-2,3-dihydro-1H-2-indolylidenemethyl)-3-cyclobutene-1,2-dione, intermediate for the synthesis of squaryl dyes.

Sicherheitshinweise

• Piktogramme: GHS07
• Signalwort: Warning
• H-Sätze: H315,H317,H319,H335
• P-Sätze: P280 - P302 + P352 - P305 + P351 + P338
• Gefahreneinstufungen: Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
• Zielorgane: Respiratory system
• Lagerklassenschlüssel: 10 - Combustible liquids
• WGK: WGK 3
• Flammpunkt (°F): 235.4 °F - closed cup
• Flammpunkt (°C): 113 °C - closed cup
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter