IUPAC:  1,3-Dioxane 
 m-Dioxane (505-22-6)  is also called for  1,3-Dioxacyclohexane ; 1,3-Dioxane ; 1,3-Propanediol formal ; CCRIS 5911 ; EINECS 208-005-1 ; HSDB 4263 ; NSC 139436 ; Trimethylene glycol methylene ether ; m-Dioxin, dihydro- ; meta-Dioxane and so on.
Molecular Formula: C₄H₈O₂
Molecular Weight: 88.11
EINECS: 208-005-1
LogP: ACD/LogP: -0.44
XLogP: 0.10
ALOGPS: -0.14 
ACD/LogD (pH 5.5): -0.44 
ACD/LogD (pH 7.4): -0.44 
ACD/BCF (pH 5.5): 1 
ACD/BCF (pH 7.4): 1 
ACD/KOC (pH 5.5): 13.67 
ACD/KOC (pH 7.4): 13.67 
H bond acceptors: 2 
H bond donors: 0 
Freely Rotating Bonds: 0 
Heavy Atom Count: 6
Formal Charge: 0
Complexity: 32.5
Isotope Atom Count: 0
Defined Atom StereoCenter Count: 0
Undefined Atom StereoCenter Count: 0
Defined Bond StereoCenter Count: 0
Undefined Bond StereoCenter Count: 0
Covalently-Bonded Unit Count: 1
Index of Refraction: 1.404 
Molar Refractivity: 21.65 cm³ 
Molar Volume: 88.5 cm³ 
Surface Tension: 31.2 dyne/cm 
Density: 0.995 g/cm³ 
Flash Point: 15°C 
Enthalpy of  Vaporization: 34.37 kJ/mol 
Boiling Point: 105.5°C at 760 mmHg 
Vapour Pressure: 34.3 mmHg at 25°C 
The appearance of  m-Dioxane (505-22-6) is colourless liquid.
The molecular structure of  m-Dioxane (505-22-6) :

Mutation data reported. A very dangerous fire and explosion hazard when exposed to heat or flame; can react with oxidizing materials. Can form dangerous peroxides when exposed to air. When heated to decomposition it emits acrid smoke and fumes.
Hazard Codes:  F,Xn
Risk Statements:  11-20/21/22
R11:Highly flammable. 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements:  16 
S16:Keep away from sources of ignition.
RIDADR:  UN 1165 3/PG 2
WGK Germany:  3
RTECS:  JG8224000
HazardClass:  3.1
PackingGroup:  II

1.Treatment of  m-Dioxane (505-22-6) in Wastewater,see as follows :
Total removal:3.43  percent
Total biodegradation:0.09  percent
Total sludge adsorption:1.74  percent
Total to air:1.60  percent
(using 10000 hr Bio P,A,S)
2.Reactivity Profile
 m-Dioxane (505-22-6) is sensitive to heat, it can react with oxidizers.
3.Fire Fighting Measures
General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors can travel to a source of ignition and flash back. Will burn if involved in a fire. Containers may explode in the heat of a fire. Flammable liquid and vapor. May form explosive peroxides. Forms explosive mixtures with air. 
Extinguishing Media: Use water spray to cool fire-exposed containers. Use water spray, dry chemical, carbon dioxide, or chemical foam. 
4.Handling and Storage
Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. 
Storage: Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Flammables-area. Store under nitrogen.