Diethyl squarate
Names
[ CAS No. ]:
5231-87-8
[ Name ]:
Diethyl squarate
[Synonym ]:
Diethyl squarate
3,4-diethoxycyclobut-3-ene-1,2-dione
MFCD00001333
3,4-Diethoxy-3-cyclobutene-1,2-dione
Squaric Acid Diethyl Ester
3-Cyclobutene-1,2-dione, 3,4-diethoxy-
Chemical & Physical Properties
[ Density]:
1.2±0.1 g/cm3
[ Boiling Point ]:
325.7±0.0 °C at 760 mmHg
[ Melting Point ]:
19 °C
[ Molecular Formula ]:
C8H10O4
[ Molecular Weight ]:
170.163
[ Flash Point ]:
135.4±30.7 °C
[ Exact Mass ]:
170.057907
[ PSA ]:
52.60000
[ LogP ]:
-0.15
[ Vapour Pressure ]:
0.0±0.7 mmHg at 25°C
[ Index of Refraction ]:
1.477
[ Storage condition ]:
2-8°C
[ Water Solubility ]:
insoluble
MSDS
Safety Information
[ Symbol ]:
GHS07, GHS08
[ Signal Word ]:
Danger
[ Hazard Statements ]:
H315-H317-H319-H334-H335
[ Precautionary Statements ]:
P261-P280-P284-P304 + P340-P305 + P351 + P338-P342 + P311
[ Personal Protective Equipment ]:
Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
[ Hazard Codes ]:
Xn:Harmful;
[ Risk Phrases ]:
R36/37/38;R42/43
[ Safety Phrases ]:
S7-S26-S37/39-S24-S23
[ RIDADR ]:
NONH for all modes of transport
[ WGK Germany ]:
3
[ RTECS ]:
GU1772466
Synthetic Route
Precursor & DownStream
Precursor
DownStream
Articles
J. Org. Chem. 59 , 4707, (1994)
Organic Synth. 69 , 220, (1990)
J. Chem. Soc. Perkin Trans. I , 263, (1993)