Working with chemicals

Rules for working with chemicals in the cleanroom

General:

• Before working with a chemical for the first time, you must look up and read its material safety data sheet)! You can find it on kemibrug.dk
• You must know the chemical hazard labeling system (CLP)
• Always work with chemicals under a fume hood. The only exception is isopropanol and ethanol for wiping equipment
• When using a fumehood for the first time, you must familiarize yourself with its safe operation (alarms, indicators, emergency max flow)
• New processes can only be introduced in the cleanroom after submission and approval of a chemical risk assessment form.
• All chemicals must be marked with the prefabricated labels. Prefabricated labels are located in the labels folder in cleanroom 1.
• Use a funnel when pouring chemicals into small containers
• When mixing chemicals, know what type of chemical reactions to expect
• Wipes saturated with solvents must be left to degas in the fume hood before disposal in the trash bin (even if the trash cabinet is ventilated)
• Chemical mixtures giving off gas must be left to degas (with cap off) before pouring into waste containers
• Empty chemical bottles must be placed in the dedicated space under sink. Staff will remove them later
• If you have special reasons to leave a process unattended in a fumehood, please limit the time. Beakers with chemicals left in the fume hood must be marked with a content label, your name, phone number and estimated time of removal. Be prepared to be flexible if approached by other users.
• Dangerous chemicals, liquefied gasses etc must not by accompanied by persons during lift transport. Instead, use the override feature for unaccompanied transport.

In case of a spill:

• If you spill, please use the appropriate spill kits to collect the chemicals
  • Always inform other cleanroom users immediately
  • Always inform the cleanroom staff about spills.
  • Evacuate cleanroom and put “No entrance” sign on door, if the spill is more than 10×10 cm

When working with acids or bases:

• You must:
  • Use personal protective equipment
  • Work in a fume hood
  • Always change gloves if you get chemicals on them
  • Never put your fingers into chemicals even if you wear gloves. Gloves are for safety against spills only!
  • Please note that the glove breakthrough time for most solvents is between tens of seconds and at most a few minutes
  • Hot acid mixtures must be left to cool before pouring into the waste containers
• Remember Triple A: - Always Add Acid to water (På dansk: AVIS: Aldrig Vand I Syre)

Guidelines for using hydrofluoric acid

• Hydrofluoric acid (HF) is by far the most serious danger to your health in the lab. Even though it’s considered a “weak” acid the consequences are much more serious compared to any other acid used in the lab.
• HF can only be used after special safety training by qualified staff
• The users must read working with HF thoroughly before using HF
• Always work with a 'buddy' when using HF

In case of emergency or accidents

First aid

Apply the four principles of first aid:

• Stop the accident
• Preserve life
• Summon assistance
• Provide first aid

If you call the emergency services via 112 you must send a colleague down to the main entrance of the HCØ building to help the paramedics locate the site of the accident.

The local emergency ward is the Bispebjerg Skadestue, 23 Bispebjergbakke, 2400 Copenhagen NV

All accidents must be reported to one of the permanent NBI staff members.

Location of emergency equipment

• Emergency showers are located in the hallway niches on all floors at HCØ except the basement. The shower head is in the ceiling and tap handle is in the wooden panel above the cabinets.
• There are showers in both cleanrooms
• Eyewash bottles are in the cleanroom and in all labs where chemicals are used
• There is a plumbed-in eyewash shower in the common cleanroom corridor
• Larger first aid kits are located in the hallway niches closest to the elevator on the 2^nd floor and 4^th floor
• Defibrillators are located in the HCØ hallway ground floor.