METHOD FOR QUANTITATIVELY ASSAYING DIMALEINIMIDES Russian patent published in 2001 - IPC

Abstract RU 2175124 C1

FIELD: analytical methods. SUBSTANCE: dimaleinimide sample in concentrated nitric acid is treated with 10% solution of potassium nitrate in concentrated sulfuric acid at 20-25 C for 30 min and then with 15-20% sodium hydroxide aqueous solution, after which optical density of resulting solution is measured at wavelength 400 nm. EFFECT: increased sensitivity of analysis. 3 tbl, 3 ex

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RU 2 175 124 C1

Authors

Isaev R.N.

Ishkov A.V.

Dates

2001-10-20—Published

2000-02-14—Filed