ulf ide , ▁di eth yl ▁ ether , ▁eth yl ▁alco hol , ▁pet role um , ▁or ▁other ▁organ ic ▁matter . ▁ ▁It ▁is ▁prepared ▁from ▁the ▁reaction ▁of ▁pot ass ium ▁perm ang an ate ▁with ▁calci um ▁ch lor ide ▁or ▁from ▁the ▁reaction ▁of ▁al umin ium ▁perm ang an ate ▁with ▁calci um ▁ox ide . ▁ ▁It ▁can ▁be ▁also ▁prepared ▁by ▁react ing ▁mang an ese ▁dio x ide ▁with ▁a ▁solution ▁of ▁calci um ▁hy po ch lor ite ▁and ▁a ▁little ▁bit ▁of ▁calci um ▁hydro x ide ▁to ▁increase ▁the ▁p H ▁level . ▁ ▁If ▁mang an ese ▁dio x ide ▁is ▁he ated ▁with ▁calci um ▁hydro x ide ▁with ▁an ▁ox id ier ▁such ▁as ▁Ca ( NO 3 ) 2 , ▁Ca ( Cl O 3 ) 2 , ▁or ▁Ca ( Cl O 4 ) 2 , ▁it ▁will ▁produce ▁calci um ▁mang an ate ▁or ▁mang am ite ▁(' h yp om ang an ate '). ▁ ▁Us es ▁It ▁is ▁believed ▁to ▁help ▁wh iten ▁teeth . ▁ ▁It ▁was ▁formerly ▁used ▁as ▁a ▁component ▁of ▁ro cket ▁fuel ▁by ▁the ▁Luft wa ffe . ▁ ▁See ▁also ▁Pot ass ium ▁perm ang an ate ▁S od ium ▁perm ang an ate ▁Am mon ium ▁perm ang an ate ▁ ▁References ▁ ▁Category : Cal ci um ▁comp ounds ▁Category : Perm ang an ates ▁Category : O x id izing ▁agents <0x0A> </s>