www jst umn edu Oil Bath Safety Oil

www. jst. umn. edu Oil Bath Safety

Oil Bath Use Temp. probe Label your reaction Safety first Ø Always wear protective eye-wear and gloves. Ø Do not set the oil-bath temperature set point above 130°C. Ø Make certain the temperature probe is in the bath before turning on heat. Ø Turn heat off when not in use, turn stirring off when oil has cooled to room temp. Ø Make sure electrical connections are tight, and cables are not in excessive tension. Ø Use a lab jack to position the oil bath under the reaction. This allows the hot oil to be removed quickly in case of an emergency. www. jst. umn. edu 2

Keep it clean Ø Prevent condensation from the condenser jackets from dripping into the oil. Ø Prevent your reaction mixture from spilling into the oil. If your reaction mixture gets into the oil, immediately replace the oil. Ø Make sure the outside of your reaction vessel is clean. Do not label your vessels with tape, which could fall into the oil. Ø The oil will get dirty with normal use over a period of time. If you notice this, replace the oil (available at the chemistry stock room). www. jst. umn. edu

Keep the hood clean Ø Close the hood sashes during your reaction. Ø Do not let the oil baths overflow by submerging an oversized vessel. Ø If you need more oil than there is, remove the excess oil you added after your reaction is complete. Ø When retrieving bottles from the oil bath, make sure there is no more oil dripping. Ø Do not use oily hands to touch/adjust anything. Change gloves if necessary. www. jst. umn. edu