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4H-isochromene-1,3-dione (Molecular Formula: C9H6O3)
Product Name: 4H-isochromene-1,3-dione
CAS Registry Number: 703-59-3
EINECS: 211-873-4  
Synonyms: SBB069509; 1H-2-Benzopyran-1,3(4H)-dione; 1,3-Isochromandione;4H-isochromene-1,3-dione; 703-59-3; 4H-isochromene-1,3-dione;HOMOPHTHALIC ANHYDRIDE; 4H-benzo[c]pyran-1,3-dione;
Molecular Structure:
Molecular Formula: C9H6O3
Molecular Weight: 162.14214
Density:  1.347 g/cm3
Boiling Point:  324.5 °C at 760 mmHg
Melting Point:  140-144℃
Flash Point:  159 °C
Refractive index:  1.584
Risk Codes:  S26:Incaseofcontactwitheyes,rinseimmediatelywithplentyofwaterandseekmedicaladvice.;S37/39:Wearsuitableglovesandeye/faceprotection.;
Safety Statements:  R36/37/38:Irritatingtoeyes,respiratorysystemandskin.;
Hazard Symbols:  Xi:Irritant;
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