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    | product Name | 3aalpha,4,7,7aalpha-Tetrahydro-4alpha,7alpha-methanoisobenzofuran-1,3-d one |  
    | Synonyms | 5-Norbornene-2,3-dicarboxylic Anhydride; Carbic anhydride; Himic anhydride; Nadic anhydride |  
    | Molecular Formula | C9H8O3 |  
    | Molecular Weight | 164.158 |  
    | InChI | InChI=1/C9H8O3/c10-8-6-4-1-2-5(3-4)7(6)9(11)12-8/h1-2,4-7H,3H2/t4-,5+,6?,7? |  
    | CAS Registry Number | 129-64-6;826-62-0 |  
    | EINECS | 204-957-7 |  
    | Molecular Structure |   |  
    | Density | 1.406g/cm3 |  
    | Melting point | 162-165℃ |  
    | Boiling point | 331.056°C at 760 mmHg |  
    | Refractive index | 1.584 |  
    | Flash point | 163.801°C |  
    | Water solubility | DECOMPOSES |  
    | Vapour Pressur | 0mmHg at 25°C |  
    | Hazard Symbols |  Xn:Harmful; 
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    | Risk Codes | R41:; R42/43:;
 
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    | Safety Description | S22:; S24:;
 S26:;
 S37/39:;
 
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