Substance
ID:719507
Names and Identifiers
IUPAC name
dibutoxycyclobut-3-ene-1,2-dione
IUPAC Traditional name
squaric acid dibutyl ester
Synonyms
3,4-Di-n-butoxy-3-cyclobutene-1,2-dione3,4-二-正-丁氧基-3-环丁烯-1,2-二酮Di-n-butyl squarateSquaric acid di-n-butyl ester
Properties
Safety Information
GHS Precautionary statements
P280-P305+P351+P338-P302+P352-P321-P362-P332+P313
Safety Statements
26-37
Risk Statements
36/38
TSCA Listed
否
GHS Pictograms
Acute toxicity (oral, dermal, inhalation), category 4
Skin irritation, category 2
Eye irritation, category 2
Skin sensitisation, category 1
Specific Target Organ Toxicity – Single exposure, category 3
European Hazard Symbols
Irritant (Xi)GHS Hazard statements
H315-H319
RTECS
GU1772066
Physical Property
Boiling Point
155-158°C/3mm
Density
1.047
Flash Point
>110°C(230°F)
Refractive Index
1.4950
Product Information
Purity
98%
Molecule Details
No Data Available
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Molecular Spectra
No Data Available
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References
• Reaction with alkyl- or aryllithium compounds results in ring opening to give the corresponding symmetrical 2,3-dibutoxy-1,4-diketones in high yield: Tetrahedron., 51, 12373 (1995).