Meanwhile, the BSE Sensex was down 121.95 points or 0.72% to 16,790.76.

On BSE, 1.46 lakh shares were traded in the counter as against average daily volume of 3.13 lakh shares over the past one quarter.

The stock hit a high of Rs 123.75 and a low of Rs 120.20 so far during the day. The stock had hit a 52-week high of Rs 171.20 on 13 May 2011. The stock had hit a 52-week low of Rs 108.10 on 27 April 2012.

The mid-cap stock had underperformed the market over the past one month till 7 May 2012, falling 10.94% compared with the Sensex's 3.28% fall. The scrip had also underperformed the market in the past one quarter, declining 18.66% as against the Sensex's 4.03% fall.

The company has an equity capital of Rs 92.36 crore. Face value per share is Rs 2.

The United Phosphorus stock had fallen 5.67% in two trading sessions to settle at Rs 119.65 on Monday, 7 May 2012, from Rs 126.85 on 3 May 2012.

United Phosphorus' board of directors at a meeting held on Monday, 7 May 2012, approved the buyback of up to 1.92 crore fully paid up equity shares at a price not exceeding Rs 150 per equity share, payable in cash upto an aggregate amount not exceeding Rs 288 crore from the open market through Stock Exchanges.

United Phosphorus' consolidated net profit fell 7.2% to Rs 201.87 crore on 17.4% growth in net sales to Rs 2119.41 crore in Q4 March 2012 over Q4 March 2011. Consolidated net profit fell 0.4% to Rs 555.55 crore on 33.4% growth in net sales to Rs 7534.19 crore in the year ended 31 March 2012 over the year ended 31 March 2011.

United Phosphorus is a global generic crop protection, chemicals and seeds company.