Basic

CAS No.	17697-12-0
Product Name	Benzeneseleninic anhydride
Synonyms	Phenylselenic anhydride; Benzeneseleninic acid anhydride; Phenylseleninic anhydride; 1,3-diphenyldiselenoxane 1,3-dioxide
Molecular Formula	C12H10O3Se2
Molecular Weight	360.126

Physical property

Melting point	170-173℃
Boiling point	184.2°C at 760 mmHg
Flash point	65.2°C

Hazard Symbols	T:Toxic; N:Dangerous for the environment;
Risk Codes	R23/25:Toxic by inhalation and if swallowed.; R33:Danger of cummulative effects.; R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.;
Safety Description	S20/21:When using do not eat, drink or smoke.; S28A:After contact with skin, wash immediately with plenty of water.; S45:In case of accident of if you feel unwell, seek medical advice immediately (show the label where possible).; S60:This material and its container must be disposed of as hazardous waste.; S61:Avoid release to the environment. Refer to special instructions / Safety data sheets.;