| abstract |
A method of purifying 1,3-bis(3-aminopropyl)-1,1,3,3-tetraorganodisiloxane represented by the formula (I) as described hereinbefore, which comprises recrystallizing a crude product of the compound as its acid addition salt, and then neutralizing the acid addition salt to obtain a purified product of the compound. According to the method of the present invention, the compound of the formula (I) can be purified at high purity in high yield, and the purification treatment can be industrially conducted. |