1,3,5-Trioxane

1,3,5-Trioxane, sometimes also called trioxane or trioxin, is a chemical compound with molecular formula C3H6O3. It is a white, highly water-soluble solid with a chloroform-like odor. It is a stable cyclic trimer of formaldehyde, and one of the three trioxane isomers; its molecular backbone consists of a six-membered ring with three carbon atoms alternating with three oxygen atoms.

1,3,5-Trioxane
Names
Preferred IUPAC name
1,3,5-Trioxane
Other names
s-Trioxane; 1,3,5-Trioxacyclohexane; Trioxymethylene; Metaformaldehyde; Trioxin
Identifiers
3D model (JSmol)
102769
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.003.466
EC Number
  • 203-812-5
2230
PubChem CID
RTECS number
  • YK0350000
UNII
UN number 1325
  • InChI=1S/C3H6O3/c1-4-2-6-3-5-1/h1-3H2 Y
    Key: BGJSXRVXTHVRSN-UHFFFAOYSA-N Y
SMILES
  • O1COCOC1
Properties
C3H6O3
Molar mass 90.078 g·mol−1
Appearance White crystalline solid
Density 1.17 g/cm3 (65 °C)
Melting point 62 °C (144 °F; 335 K)
Boiling point 115 °C (239 °F; 388 K)
221 g/L
Hazards
GHS labelling:
Warning
H228, H335, H361d
P201, P202, P210, P240, P241, P261, P271, P280, P281, P304+P340, P308+P313, P312, P370+P378, P403+P233, P405, P501
NFPA 704 (fire diamond)
2
2
0
Flash point 45 °C (113 °F; 318 K)
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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