Storage Information about specific chemicals

Each chemical has specific characteristics that affect storage and feed system design. Table 3-1 lists some information about the gases used in water treatment. A brief summary of the uses for each chemical follows. 

Stereochemical representation has been an integral part of the CAS Chemical Registry System since its inception in 1965 (see Stereochemistry Representation and Manipulation). Stereoisomers are considered to be different, individual substances, and each is assigned its own CAS Registry Number. The unique identification of stereoisomers permits the storage and retrieval of information collected from scientific literature about a specific isomer. About one-fourth of the over 17 million substances in the Registry File contain stereo information. 

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