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A19248 3,4-Diethoxy-3-cyclobutene-1,2-dione, 98%

CAS Number
5231-87-8
Synonyms
Diethyl squarate
Squaric acid diethyl ester

Stock No. Size Price ($) Quantity Availability
A19248-03 1g 48.40
A19248-06 5g 158.00
A19248-14 25g 578.00
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3,4-Diethoxy-3-cyclobutene-1,2-dione, 98%

MDL
MFCD00001333

Chemical Properties

Formula
C8H10O4
Formula Weight
170.16
Boiling Point
95°/0.1mm
Flash Point
>110°(230°F)
Density
1.162
Refractive Index
1.5090
Storage & Sensitivity
Keep Cold.

Literature References

For reaction with 1-lithiofuran and thermal rearrangement of the resulting 1-hydroxy-1-furanyl derivative to give, after oxidation, a furanoquinone, see: Org. Synth. Coll., 8, 179 (1993); other examples of annulated quinones are also listed.

/n

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H317-H319-H334-H335

Causes skin irritation. May cause an allergic skin reaction. Causes serious eye irritation. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause respiratory irritation.

Precautionary Statements: P261-P264b-P271-P272-P280-P285-P302+P352-P304+P340-P305+P351+P338-P333+P313-P342+P311-P362-P501c

Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Contaminated work clothing should not be allowed out of the workplace. Wear protective gloves/protective clothing/eye protection/face protection. In case of inadequate ventilation wear respiratory protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If skin irritation or rash occurs: Get medical advice/attention. If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician. Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Beilstein
640626
Harmonized Tariff Code
2914.50
TSCA
No
RTECS
GU1772466

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