The remaining $140 million were offered as 12-year, 8 percent notes.

The 8 3/4 percent notes due 1993 are offered at 99.52.

The first $250 million piece consists of 10 3/8 percent 10-year notes.

The remaining $650 million were sold as 6.25 percent two-year notes.

The big French chemical company offered $500 million worth of 7.75 percent 10-year notes.

First Boston will exchange $260 million of a 15.5 percent note for common stock.

The issue also included $100 million of 9.50 percent 10-year notes.

The 9.30 percent notes are due in 1993, with an average life of 1.92 years.

On March 15, the firm sold $200 million in 10 3/8 percent 18-month notes.

The 8.70 percent notes were priced at $100, or par.