LAB MANUAL
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22 questions
| 🇬🇧 | 🇬🇧 |
| Acid on clothing | Use dilute ammonia solution |
| Base on clothing | Use dilute acetic acid followed by dilute ammonia solution. |
| Acid or base on the desktop or floor | Wash off with plenty of water. Use solid crude sodium bicarbonate to neutralize large amounts of either acid or base. Then wash the mixture off with water |
| Burns caused by dry heat (skin is not broken) | Apply butesin picrate ointment or any burn ointment available in the first-aid kit in the laboratory. |
| Acids on the skin | Wash the affected area immediately with plenty of water, then with saturated sodium bicarbonate solution and again with water. |
| Alkali on the skin | Wash the affected area immediately with plenty of water, then with 1% acetic acid solution and again with water. |
| Bromine on the skin | Wash the affected part immediately with plenty of light petroleum (B.P. 80˚ C) and then rub glycerin well onto the skin. After a short while, remove the glycerin and apply butesin picrate ointment or any burn ointment in the first-aid kit. |
| Sodium on the skin | If a small fragment of sodium metal can still be seen, remove it carefully with a forceps. Wash thoroughly with water; followed with 1% acetic acid solution. Cover the area with gauze soaked in olive oil or acriflavine jelly or Vaseline. |
| Organic substances on the skin | Wash freely with rubbing alcohol, then with soap and water |
| Cut (minor) | Allow it to bleed for a few seconds. |
| Cut (caused by glass) | See to it that no glass pieces remain. Apply a disinfectant and bandage. |
| Serious Cuts | Check bleeding by applying pressure above it (a tourniquet) . Send for a doctor at once. |
| Acid in the eyes | Wash the eye/s repeatedly with 1% sodium bicarbonate solution. If the acid is concentrated, wash the eye/s with large amount of water and then with bicarbonate solution. |
| Caustic Alkali in the eye/s | Wash the eye/s with large amount of water and then with 1% boric acid solution |
| Bromine Water in the eye/s | Wash thoroughly with 1% sodium bicarbonate solution. |
| When clothes catch on fire | Prevent the person from running. Let him/her roll on the floor or wrap another piece of clothing around him (a laboratory gown or blanket) to cut off the supply of oxygen |
| Chemicals in beakers and other containers burn (fire) | Cover the mouth of the vessel with a clean damp cloth so that the flame will be put off. |
| Larger flames | Sand may be employed. It is advisable to make use of a fire extinguisher. NOT water |
| If an acid is swallowed (POISONS) | Dilute by drinking plenty of water followed by limewater or milk of Magnesia. Milk may also be given. Do not give any emetic. |
| Caustic Alkali (POISONS) | Dilute by drinking plenty of water, followed by vinegar, lemon or orange juice. Milk may also be given. Do not give any emetic. |
| Salts of Heavy Metals (POISONS) | If a salt or heavy metal is swallowed, one may give milk or raw egg white. |
| Arsenic or Mercury Compounds (POISONS) | Give an emetic immediately such as one tablespoonful of salt or zinc sulfate in a glass of warm water. |