This is purest form of Camphor in some instances also called Bhimseni or Pacha Kapoor - which known to be detoxifying agent for your home atmosphere.Camphor may have decongestive properties and decreases inflammation in the lungs and throat. It might aid in managing nose blocks and treats congestion. It may work on the nerves and reduces cough by acting as a cough suppressant. It might be effective against several respiratory disorders. Its also edible and used in many recepes :)
The edible camphor is extracted, in Asia, from the green trees of Cinnamomum camphora or Triopalanops aromatica. it is also formed in laurel family of trees and in particular, Ocotea usambarensis 
Just FYI - The non edible camphor for lighting in puja is made artificially from the turpentine. We do not encourage in temples or for rituals, being not suitable for environment So please consider being natural when you make choices.