Tert-Butyl Peroxypivalate

。Product description

　tert-Butyl peroxypivalate

　75% solution in odorless mineral spirits

　Molecular weight : 174.2

　Theoretical active oxygen content : 9.18%

　CAS No. : 927-07-1

。Specification 

　Appearance : Clear liquid

　Assay : 74.0-76.0%

　Color : 20 Pt-Co max.

　Hydroperoxides (as TBHP) : 1000 mg/kg max.

　Inorganic + organic hydrolyzable chloride : 100mg/kg max.

。Physical properties

　Density, 20℃ : 850 kg/m³

　Viscosity, 20℃ : 2.1 mPa.s

。Half life data

The reactivity of an organic peroxide is usually given by its half life (t1/2) at various 

　temperatures. For LQ-TBPV in chlorobenzene:

　t 0.1 hr 1 hr 10 hr

　at 94℃ 75℃ 57℃

。Storage 

LQ-TBPV Ts max. = -5℃ and

　Ts min. = -15℃ to prevent crystallization

。Packaging and transport

The standard packaging is a 30-liter HDPE can for 25 kg peroxide solution. Both packaging and

　transport meet the international regulations.

LQ-TBPV is classified as Organic peroxide type C; liquid, temperature controlled; Division 

　5.2; UN 3113; PG II.

　Rail (RID) and air (ICAO-TI/IATA-DGR) transport are forbidden.

。Major decomposition products

Carbon dioxide, Isobutene, tert-Butanol, Acetone, Isobutane

。Application 

　Polymerization of ethylene

　LQ-TBPVis an efficient initiator for the ethylene polymerization under high pressure in both 

　autoclave and tubular processes. 

　Polymerization of vinylchloride

　LQ-TBPV is used as an initiator for the suspension and mass polymerization of vinylchloride 

　between 50°C and 70℃.