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    | product Name | 2,4,8,10-tetraoxaspiro[5.5]undecane |  
    | Synonyms | 2,4,8,10-Tetraoxaspiro(5.5)undecane; 5,5'-Spirobi-1,3-dioxane; 5,5'-Spirobi-m-dioxane; AI3-23521; Formaldehyde, cyclic diacetal with pentaerythritol; NSC 139455; Pentaerythritol bisformal; Pentaerythritol cyclic diformal; Pentaerythritol diformal; Pentaerythritol, bis(cyclic acetal) with formaldehyde; Pentaerythritol, dimethylene- |  
    | Molecular Formula | C7H12O4 |  
    | Molecular Weight | 160.1678 |  
    | InChI | InChI=1/C7H12O4/c1-7(2-9-5-8-1)3-10-6-11-4-7/h1-6H2 |  
    | CAS Registry Number | 126-54-5 |  
    | EINECS | 204-792-0 |  
    | Molecular Structure | ![126-54-5 2,4,8,10-tetraoxaspiro[5.5]undecane](/cas/UploadFiles_6326/201303/2013031018320208.gif)  |  
    | Density | 1.2g/cm3 |  
    | Boiling point | 253.4°C at 760 mmHg |  
    | Refractive index | 1.474 |  
    | Flash point | 108.3°C |  
    | Vapour Pressur | 0.0292mmHg at 25°C |  
    | Hazard Symbols |  |  
    | Risk Codes |  |  
    | Safety Description |  |  |