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Chemical collection and stock control for UK schools, universities and hospitals

Fructose (CAS 57-48-7): storage and disposal

Fructose appears in school, college and university stores as a white crystalline sugar, bought for carbohydrate and fermentation practicals. It is not classified as hazardous on the sources we checked, but a laboratory jar is still a chemical waste and has to be described accurately. Of the common sugars it is the one that picks up moisture from the air most readily, which is why jars so often fail.

CAS number
57-48-7
Form
Solid
Storage class
General
Usual EWC code
16 05 09

What to do this week

  1. Check the label is readable and write down the opened date if it is not already there.
  2. Check it is stored as general stock and apart from the items listed under "Do not store with".
  3. If you no longer need it, add it to your disposal list so it goes on the next collection.

Safe storage in a school or lab

Damp is the hazard that decides where it goes, since fructose draws moisture from the air readily and a loosely closed jar will become sticky within a damp season. Keep it in a dry, labelled, well organised store with the lid screwed down, not on a shelf over a wash area or beside bottles of aqueous solution. Date it on arrival and separate it from food grade supplies, as a sugar jar in a prep room is easily mistaken for something edible. A silica gel sachet is not needed if the lid is tight and the shelf is dry.

How to tell it has deteriorated

Normal fructose is a free flowing crystalline powder. What does not look right is a jar that has fused into a single hard lump that will not tip out, a sticky or syrupy film inside the lid, and crystals that look wet or darkened where they touch the glass. Mould can follow in a damp store. A faded label or missing date is the other common problem. Record the condition of the contents and the label. Do not chip the block out or add water to loosen it.

How it must be disposed of

By specialist collection only. It never goes down the drain or into general waste. It is normally packed in a non-regulated or low hazard laboratory pack with compatible chemicals.

A fused block in a jar is grouped and packed with other solid laboratory chemicals as one container, and the label is what describes it. On the sources we checked fructose is not classified as hazardous, so it uses the non hazardous code 16 05 09, and a waste transfer note covers the move. It remains a chemical waste, so it must not be dissolved and poured into a sink, a drain or general waste. Note the label wording, the state of the contents and the approximate quantity.

Waste codes and transport details for Fructose
EWC code, laboratory chemicals16 05 09
Hazardous wasteNo

The code depends on where the waste came from and what it is mixed with. Use the waste code finder to see why.

Common quantities we collect

Usually held as: solid.

Part-used bottles and full containers are both fine. Tell us the size and how many, and an estimate is enough for a first price.

Where it is commonly held

Questions

Why does fructose set hard when glucose does not always?

Fructose takes up moisture from the air more readily than most common sugars, so a loose lid lets it fuse into a lump or sticky mass. The remedy is a tight lid and a dry shelf. A fused jar is still collected as it stands.

Is fructose classed as hazardous waste?

On the sources we checked it is not classified as hazardous. It is still chemical waste and must be described accurately, so it goes by specialist collection with the non hazardous code. Check the supplier safety data sheet if you hold one.

Can we dissolve a hard lump to get it out of the jar?

No. Adding water means treating the stock and then having a liquid to dispose of. Keep the jar closed in its original container, record the condition and request collection. The container can be described as it is.

Guidance only. Check your own risk assessment and your supplier's safety data sheet.

Hazard data source: PubChem GHS Classification, retrieved 31 Oct 2026. Formula C6H12O6. EC number 200-333-3.

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