On the National Commodity and Derivatives Exchange, guar gum contracts for September slipped by Rs 178, or 2.11 per cent, to Rs 8,278 per five quintal with an open interest of 51,495 lots.
Besides, guar gum for October delivery eased by Rs 186, or 2.17 per cent, to Rs 8,380 per five quintal with an open interest of 17,110 lots