HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 69721Generated: November 4, 2026
5,5-Dimethyl-1,3-dioxane-2-spirocyclohexane
thyme undecane · 3,3-Dimethyl-1,5-dioxaspiro[5.5]undecan · 3,3-dimethyl-1,5-dioxaspiro[5.5]undecane · 1,5-Dioxaspiro5.5undecane, 3,3-dimethyl- · 9,9-Dimethyl-7,11-dioxaspiro[5.5]undecane · 5-Dioxaspiro[5.5]undecane, 3,3-dimethyl-1 · Cyclohexanone 2,2-dimethylpropane-1,3-diyl acetal
https://huagongshe.com/en/chemical/69721
Identifiers & Physical Properties
| CAS No. | 707-29-9 |
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| Molecular formula | C11H20O2 |
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| Average molar mass | 184.27 g/mol |
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| Monoisotopic mass | 184.14632988 g/mol |
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| SMILES | CC1(C)COC2(CCCCC2)OC1 |
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| InChIKey | QIFSGRPJUXQGMD-UHFFFAOYSA-N |
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| PubChem CID | 69721 |
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| EC No. | 211-898-0 |
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| DTXSID | DTXSID4061040 |
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Chemical & Physical Properties
| XLogP | 2.6 |
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| Topological polar surface area | 18.5 |
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| Hydrogen bond donors | 0 |
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| Hydrogen bond acceptors | 2 |
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| Rotatable bonds | 0 |
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| Heavy atoms | 13 |
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| Formal charge | 0 |
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| Complexity | 169 |
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| Boiling point | 110.0-110.5 °C(Press: 19-20 Torr) |
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| Density | 0.98±0.1 g/cm3(Predicted) |
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| Odor | at 10.00 % in dipropylene glycol. fresh thyme herbal leather tobacco animal sweet |
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| Odor type | herbal |
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| Cosmetics Ingredients Functions | PERFUMING |
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| LogP (partition coefficient) | 2.644 (est) |
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| FDA UNII | FR188I264H |
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| EPA Substance Registry System | 1,5-Dioxaspiro[5.5]undecane, 3,3-dimethyl- (707-29-9) |
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| TSCA inventory status | TSCA listed |
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Safety & Regulations
| GHS classification | This chemical does not meet GHS hazard criteria for 100% (94 of 94) of all reports.Not ClassifiedAggregated GHS information provided per 94 reports by companies from 1 notifications to the ECHA C&L Inventory. |
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| Regulatory information | Chemical: 1,5-Dioxaspiro[5.5]undecane, 3,3-dimethyl-1,5-Dioxaspiro5.5undecane, 3,3-dimethyl-: Does not have an individual approval but may be used under an appropriate group standard |
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| Other safety information | IMAP assessments - 1,5-Dioxaspiro[5.5]undecane, 3,3-dimethyl-: Environment tier I assessment |
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| Hazard Classes and Categories | Not Classified |
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| TSCA inventory status | TSCA listed |
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