Flinn Scientific Inc. has developed a system of chemical classification based on separation of reagents into compatible groups by families. The groups and the family of reagents they represent are:

I-3: amides, nitrates (except ammonium nitrate) nitrites, azides

I-4: hyroxides, oxides, silicates, carbonates, carbon

I-5: sulfides, senlenides, phosphides, carbides, nitrides

I-6: chlorates, perchlorates, perchloric acid, chlorites, hypochlorites, eroxides, hydrogen peroxide

I-7: arsenates, cyanides, cyanates

I-8: borates, chromates, manganates, permanganates

I-9: acids (except nitric)

I-10: sulfur, phosphorus, arsenic, phosphorus pentoxide

I-M: miscellaneous

O-1: acids, anhydrides, peracids

O-2: alcohols, glycols, amines, amides, imines, inides

O-3: hydrocarbons, esters, aldehydes

O-4: ethers, ketones, ketenes, halogenated hydrocarbons, ethylene oxide

O-5: epoxy compounds, isocyanates

O-6: peroxides, hydroperoxides

O-7: sulfides, polysulfides, sulfoxides, nitriles

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O-M: miscellaneous

The families are to be arranged in such a manner that will keep incapatible reagents separated as well as possible.

The suggested order of inorganic families is: I-10, I-2, I-3, I-1, I-4, I-7, I-5, I-8, I-6, I-M.

Ammonium ntrate s to be stored on a shelf by itself, away from all other reagents.

The suggested order of organic families is: O-2, O-3, O-4, O-5, O-7, O-8, O-6, O-1,

O-M.

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