Alkaline waste codes Caustic liquids & solid alkalis, such as soda and cleaning residues.

Free, no account
Official state lists and movement guidance
Nothing is stored

Alkaline waste

Australian Capital Territory
Alkaline liquids and solid alkalis
ACT: The material is an alkaline liquid or an alkali in solid form.
When to use C100
National reporting
Alkaline liquids and solid alkalis
National: The material is an alkaline liquid or an alkali in solid form.
When to use C100
New South Wales
Alkaline liquids and solid alkalis
NSW: The material is an alkaline liquid or an alkali in solid form.
When to use C100
Northern Territory
Alkaline liquids and solid alkalis
NT: The material is an alkaline liquid or an alkali in solid form.
When to use C100
Queensland
Alkaline liquids and solid alkalis
Queensland: The material is an alkaline liquid or an alkali in solid form.
When to use C100
South Australia
Alkaline liquids and solid alkalis
SA: The material is an alkaline liquid or an alkali in solid form.
When to use C100
South Australia
South Australia interstate Policy: alkaline liquids and solid alkalis
SA interstate policy: The material is an alkaline liquid or an alkali in solid form.
When to use C100
Tasmania
Alkaline liquids and solid alkalis
Tasmania: The material is an alkaline liquid or an alkali in solid form.
When to use C100
Victoria
Solid alkalis and alkaline liquids
Victoria: The material is an alkaline liquid or an alkali in solid form.
When to use C100
Western Australia
Alkaline liquids and solid alkalis
WA: The material is an alkaline liquid or an alkali in solid form.
When to use C100

Other codes that mention it 10

Australian Capital Territory
Acidic liquids and solid acids
When to use B100
National reporting
Acidic liquids and solid acids
When to use B100
New South Wales
Acidic liquids and solid acids
When to use B100
Northern Territory
Acidic liquids and solid acids
When to use B100
Queensland
Acidic liquids and solid acids
When to use B100
South Australia
Acidic liquids and solid acids
When to use B100
South Australia
South Australia interstate Policy: acidic liquids and solid acids
When to use B100
Tasmania
Acidic liquids and solid acids
When to use B100

C100 covers alkaline liquids & alkalis in solid form, in the national list and the ACT, NSW, NT & Queensland lists.

Does every Australian C100 code have the same pH threshold?

No. Victoria’s current entry sets pH 10 or more for alkaline solutions, with caustic soda, alkaline cleaning products and discarded lime as examples. A shared code number doesn’t mean a shared threshold across the state catalogues.

How do you code an alkaline cleaning bath with other contaminants?

Use the bath’s process and composition to weigh the alkaline and constituent entries together. Identify dissolved metals and other controlled residues. A pH reading alone can’t show that a mixture is outside a controlled-waste list.

Which exclusions or special routes apply to alkaline waste codes?

South Australia. Householders and farmers can take alkalis to South Australia’s free household chemical depots.

Australian Capital Territory. Small quantities of unwanted household alkalis can go to the free household chemical drop-off at Mugga Lane or Mitchell.

The shared classification and movement limits for alkaline waste codes are on the Victoria, New South Wales, Queensland, South Australia, Western Australia, Tasmania, Australian Capital Territory and Northern Territory pages.

What do you do next with alkaline waste codes?

For alkaline waste, record the pH, process and other constituents. Then pick the state entry and an authorised neutralisation, treatment or collection route.

Sources

State-specific examples are labelled. Choose the state before using a candidate.