A rapid, direct, sensitive method of analysis of cellulose esters of long-chain fatty acids has been developed. The method consists of saponification with propanolic potassium hydroxide, neutralization by passage through a microcolumn contain ing an acid-coated solid support, and glc analysis of the liberated fatty acids. The method affords determination of the stearic constituent as low as one mg stearoyl group per gram of cloth.
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