MTL Fabrication

New User Orientation

Chemicals in MTL

READ LABELS! Be sure to select the proper chemicals.
Use exhaust hoods for all chemical processes.
Know where showers and eyewash stations are located in the lab.
Check MSDS online or in the lab.

Using Chemicals Do's and Don'ts



Mixing acids

Always add acid to water slowly!

Disposal of chemicals

Exposure to Chemicals

In general if you suffer an exposure to any chemical, flush the exposed area with a lot of water for 15 minutes. Remove clothing as necessary.

If you have been exposed to hydrofluoric acid (HF) flush area with water for 5 minutes and apply calcium gluconate paste. Report to the Medical Department immediately, accompanied by someone. If necessary, transportation is available by dialing 100.

Shower and eyewash stations are located near chemical wet stations in each lab.

Hazards of Commonly Used Chemicals in MTL

Hydrochloric (HCl) and Nitric Acid (H2NO3)
Cause severe burns.
Piranha - Sulfuric Acid (H2SO3) & Hydrogen Peroxide (H2O2)
Produces an exothermic reaction. Keep it away from organics.
Hydrofluoric Acid (HF)
Does NOT produce skin burns – it penetrates the skin and reacts with bone calcium. Its effect may be delayed.
Hydrogen Peroxide (30%)
Burns skin. Its effect may be delayed. It is a strong oxidizer! Keep it away from organics.
Ammonium Hydroxide (NH4OH)
Burns skin. Can cause respiratory failure.
Organic Solvents
Readily absorbed through skin. Can be carcinogenic. Potential fire hazard.