| abstract |
The present invention relates to a phosphorous acid compound represented by formula (I):n nwherein R 1 represents a C 1-8 alkyl group, a C 5-8 cycloalkyl group, a C 6-12 alkyl cycloalkyl group, a C 7-12 aralkyl group or a C 6-12 aryl group; R 2 represents a hydrogen atom or a C 1-3 alkyl group; and R 3 represents a C 3-25 alkylene group, a stabilizer for organic materials containing the phosphorous acid compound, a method for stabilizing an organic material in which the phosphorous acid compound is added to the organic material, and a stabilized organic material composition containing an organic material and the phosphorous acid ester compound. |