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Diethyl squarate
[CAS 5231-87-8]

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Identification
ClassificationChemical reagent >> Organic reagent >> Olefins (cyclic and non-cyclic)
NameDiethyl squarate
SynonymsSquaric acid diethyl ester; 3,4-Diethoxy-3-cyclobutene-1,2-dione; 3,4-Diethoxycyclobut-3-ene-1,2-dione
Molecular StructureDiethyl squarate molecular structure (CAS 5231-87-8)
Molecular FormulaC8H10O4
Molecular Weight170.16
CAS Registry Number5231-87-8
EC Number629-595-0
Properties
Density1.15
Boiling point95 °C (0.1 mmHg)
Refractive index1.508-1.51
Water solubilityinsoluble
Safety Data
Hazard Symbolssymbol   Xn  Details
Risk StatementsR36/37/38;R42/43  Details
Safety StatementsS23;S24;S26;S37/39  Details
Hazard Classification
up    Details
HazardClassCategory CodeHazard Statement
Skin irritationSkin Irrit.2H315
Specific target organ toxicity - single exposureSTOT SE3H335
Skin sensitizationSkin Sens.1H317
Eye irritationEye Irrit.2H319
Respiratory sensitizationResp. Sens.1H334
Acute toxicityAcute Tox.4H312
Acute toxicityAcute Tox.3H301
Eye irritationEye Irrit.2AH319
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