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Squaric acid Structure

Squaric acid

Chemical Properties

Melting point >300 °C(lit.)
Boiling point 250.96°C
Density  1.82 g/cm3
refractive index  1.5800 (estimate)
Flash point 190 °C
storage temp.  Inert atmosphere,Room Temperature
solubility  20g/l
pka 1.5??(at 25℃)
form  Crystalline Powder
color  White to beige
PH 1 (1g/l, H2O, 20℃)
Water Solubility  20 g/L (30 ºC)
Merck  14,8769
BRN  774275
InChIKey PWEBUXCTKOWPCW-UHFFFAOYSA-N
CAS DataBase Reference 2892-51-5(CAS DataBase Reference)
NIST Chemistry Reference 3-Cyclobutene-1,2-dione, 3,4-dihydroxy-(2892-51-5)
EPA Substance Registry System 3-Cyclobutene-1,2-dione, 3,4-dihydroxy- (2892-51-5)

Safety Information

Hazard Codes  Xi
Risk Statements  36/37/38-43
Safety Statements  26-36-37/39
RIDADR  3261
WGK Germany  3
RTECS  GU1800000
Hazard Note  Irritant
TSCA  Yes
HazardClass  8
PackingGroup  II
HS Code  29144090

MSDS

Usage And Synthesis

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