ABN rump business's net liability seen at $9 bln

* Assets jointly owned by RBS, Santander and Dutch State

* Each member responsible for own stake-Dutch state

* Assets jointly owned carry negative equity of $9 bln

By Gilbert Kreijger and Harro Ten Wolde

AMSTERDAM, July 1 (Reuters) - A pool of ABN AMRO assets left over from the carve-up of the Dutch group following its 2007 takeover by Fortis, Royal Bank of Scotland (RBS.L) and Spain's Santander (SAN.MC), has negative equity of 6.5 billion euros ($9.2 billion), the Dutch Finance Ministry said on Wednesday.

The Dutch government bought Fortis Bank Nederland [FORTH.UL] last October, including its interests in Dutch bank ABN AMRO Nederland, in the rescue of former parent Fortis (FOR.BR).

The government also acquired Fortis's share of those ABN assets which were still jointly held by Fortis, RBS and Santander following the 70 billion euro takeover in 2007.

"The members of the consortium participate in these assets on a proportional basis," Dutch Finance Minister Wouter Bos said in a letter to parliament on Wednesday. These assets had a total negative equity value of 6.5 billion euros at the end of March, the letter said. These assets are held by RFS Holdings in which RBS has 38 percent, Santander 28 percent, and the Dutch state 34 percent, the Dutch finance ministry said.

The Dutch state will put a total of 2.5 billion euros into the parts of ABN AMRO which it owns and Santander is due to withdraw capital by the end of the year, leaving RBS with having to adequately capitalise its portion, Bos said last Friday. [ID:nLQ373211] (Editing by Greg Mahlich) ($1=.7107 euros) (harro.tenwolde@reuters.com; Reuters Messaging: harro.tenwolde.reuters.com@reuters.net; +31 20 504 5017))