Job Hazard Analysis For Lab NTDT 421
Urine-Lab:
Picric Acid---Danger---Toxic, explosive, friction-and-shock sensitive!
NaOH---Skin and eye irritant!
- Wear gloves, goggles, lab-coat while mixing chemicals!
- Work under the fume hood while pouring and mixing picric acid!
- Unscrew picric acid cap carefully. Wipe inside of cap and threads on bottle with water if dried material has formed.
- Measure out required amount using a volumetric cylinder. Be careful not to over-pour containers. Use a small glass pipette for small volumes. Mix picric acid with NaOH solution
according to desired amount. Picric acid + NaOH =alkaline picric acid.
- Store measured picric acid covered under the fume hood until ready to use. Do not let picric acid dry out!
- Handle with care to not spill picric acid solutions.
- After lab experiment, pour all picric acid solutions into a glass bottle with a cap, making sure it is a glass cap.
- Label glass container with orange safety label and call the Department of Environmental Health & Safety at # 831-8475 for pick-up of chemical waste.
- Under no circumstances is it allowed to pour picric acid down the sink!
More Information
