Hazardous / Dangerous Waste
Waste produced from many of the chemicals we use in the lab is classified as hazardous waste, for example:
- Concentrated acids and bases and salts
- Heavy metals: mercury, cadmium, chrome, lead, zinc etc.
- Halogen-free organic solvents - RED container
- Halogen-containing organic solvents - BLUE container
- Other toxic and hazardous chemicals (e.g. Cytostatica).
The National Waste Regulation (avfallsforskriften) dictates which waste is considered as hazardous. This classification depends on the inherent properties of a chemical (danger, category, risk phrases, section 2 in SDS) and the concentration of the given in chemical in waste substance. See Annex 11 for information about the classifying of hazardous / dangerous waste.
Disposal of hazardous waste
Containers with hazardous chemical waste should be placed in a red plastic box (found in the waste room on the HIB 1st floor); the form "Registreringsskjema for farlig avfall" must be filled in (see Annex 12) and attached to each container together with other relevant information (e.g. the SDS). The red boxes are then returned to the waste room, 1st floor, for collection by BIR.
Hazardous waste should preferably be disposed of in its original packaging
Waste containing organic solvents
There are two collection containers in a chemical cabinet in room 229 B1; one marked RED (non-halogenic) and the other marked BLUE (halogenic). Disposal of these two containers is organised by Grethe Underland.
Do not mix halogen free and halogen containing waste - Halogenic waste disposal is much more expensive!!
- RED container (non-halogenic): All hydrophilic solvents such as acetone, methanol, alcohols, acetonitrile, di-methylformamide, di-oxan, parafin, benzene, toulene, cyclohexane, di-methylsulfoxide (DMSO), etc.. Also: formaldehyde, paraformaldehyde, phenol if not mixed with chloroform.
- BLUE container (halogenic): All halogenic solvents such as carbontentrachloride, chloroform, methylenechloride, tri-chlor-ethylene, chlorbencene, etc.. Also: DAB-TLC and phenol mixed with chloroform.
- Clean organic solvents: waste consisting of only one solvent (no buffers or other solvents) - e.g. 100% methanol - should be collected separately. It is cheaper to dispose of clean waste rather than mixed solutions.
Note: Several lab groups collect organic solvent waste in their own containers, and then dispose of these directly.
Other hazardous chemical waste
- Consult the relevant SDS’s and use Annex 11 to determine if the waste you have generated is considered hazardous.
- Note that the waste solutions from some purification/extraction kits are also classified as hazardous waste and should not be pored into sinks!
- Different types of waste having the same waste number can be disposed together in the same red box. See Annex 12 for information about how to fill in the form and about waste numbers. The red boxes are then returned to the waste room, 1st floor, for collection by BIR.
- If you are uncertain about waste numbers or have other questions about disposal of dangerous / hazardous waste, contact Grethe Underland.