A4040 Basel waste code Waste from making & using timber-treating chemicals.
- Free, no account
- Based on ECCC's classification guide and SOR/2021-25
- Nothing is stored
Find a Canadian waste code
A4040, Wood-preservative process waste.
Basel List A codes
Wood-preservative process waste
Use A4040 for wood-preservative process waste as a presumptively hazardous Basel waste.
Is Basel A4040 hazardous waste?
Normally yes. Basel A4040 is a List A description, so the material counts as hazardous unless evidence shows it has no Annex III hazardous characteristic. The description and any exclusions still have to match.
For federally regulated international shipments, the applicant enters the waste classification in the waste-line details of the federal notification in CNMTS. Check the movement rules and exclusions.
What does Basel A4040 cover?
Covers waste from making, formulating or using chemicals that preserve wood.
- Official wording
- Read the official entry
- Rule
- SOR/2021-25
Is wood preservative waste Basel A4040?
| Code | When it fits |
|---|---|
| A4040 | Waste from making, formulating or using chemicals that preserve wood. |
Pick the entry whose description and conditions match the waste. The code classifies the waste. It doesn't settle whether SOR/2021-25 applies, what it excludes, what the destination country controls or the intended operation.
Which codes sit beside Basel A4040?
| Code | What it is |
|---|---|
| A3210 | Plastic waste hazardous through Annex I content |
| A4010 | Pharmaceutical process waste outside List B |
| A4020 | Clinical, treatment and medical-research waste |
| A4030 | Biocide and crop-treatment product waste |
| A4050 | Cyanide-bearing waste |
| A4060 | Oil or hydrocarbon mixed with water |
| A4070 | Ink, dye, pigment, paint or finish process waste |
| A4080 | Explosive waste outside List B |
Sources
- Guide to hazardous waste and hazardous recyclable materials classification
- Cross-border Movement of Hazardous Waste and Hazardous Recyclable Material Regulations (SOR/2021-25)
- Cross-border Movement of Hazardous Waste and Hazardous Recyclable Material Regulations user guide
- Basel Convention text and annexes, revised in 2025
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