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pure substance

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia 0.01 sec.
pure substance [′pyu̇r ′səb·stəns]
(chemistry)
A sample of matter, either an element or a compound, that consists of only one component with definite physical and chemical properties and a definite composition.


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This is because 5HTP is a pure substance found already in the body.
Detailed MSDSs on over 40,000 pure substances and 85,000 common mixtures help laboratory workers comply with hazard communication requirements.
Lancaster will unveil a new look in the first quarter and seven new sun care products featuring complex Radical Protection Factor (RPF) with botanical extracts and pure substances to neutralize free radicals and protect the skin from cell damage and photoaging.
 
 
 
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