99.5 % glycerol in a 25 litre drum — a technical input for laboratory and industrial use, backed by its safety data sheet. Not a product to apply to a colony.
Bulk glycerine is a chemical raw material, and it is worth buying it knowing what its documentation says. This one comes with a safety data sheet under Regulation (EU) 2020/878, and that sheet governs the uses it is identified for, how it is stored and what it must not be mixed with. Everything below comes from it.
The product is glycerol at 99.5 %, CAS 56-81-5 and EC 200-289-5: a colourless, odourless liquid with a pH of 6 to 7.5 in 10 % solution. According to its sheet it is not classified as hazardous under Regulation (EC) 1272/2008, so it carries no pictograms or hazard statements and falls outside the Seveso III directive.
Its sheet identifies two uses, laboratory and various industrial uses, and it is explicit the other way round: any use not specified there counts as advised against. Two consequences follow. Storage must avoid contact with foodstuffs, per its own storage conditions section. And, the point that matters to a beekeeper, this is not a veterinary medicine and does not serve to make one: against varroa the only option is an authorised product listed on AEMPS/CIMA Vet, with its own datasheet, dose and withdrawal period. This page gives no recipes, proportions or application schedules.
Glycerol is chemically unstable in contact with acids, bases and oxidising agents — its three declared incompatible materials — and at high temperature it can undergo pyrolysis and dehydrogenation. That is why heating and contact with those materials are the conditions to avoid. Containers are kept between 5 and 35 °C, somewhere dry and ventilated, and once opened they are closed carefully and stood upright. One warning worth reading twice: never use pressure to empty the container, which is not a pressure-rated vessel. To decant, use gravity or a pump.
It melts at 18 °C: in an unheated honey house the contents thicken in winter and become hard to decant, so warming the room beats forcing anything. It is viscous and dense — relative density 1.261, that is 1.26 kg per litre — so the weight of a full container is worked out from volume, not guessed. And spills leave the floor slippery: the sheet itself recommends CE category II safety footwear (EN ISO 13287, EN 20347).
| Chemical name | Glycerol |
|---|---|
| Assay | 99.5 % |
| CAS / EC number | 56-81-5 / 200-289-5 |
| Appearance | Colourless, odourless liquid |
| Relative density | 1.261 (1,260 kg/m³) |
| Melting / boiling point | 18 °C / 290 °C |
| Flash point | 199 °C |
| pH (10 % solution) | 6 – 7.5 |
| CLP classification | Not classified as hazardous (Regulation EC 1272/2008) |
| Format | 25 litre drum (31.5 kg net) |
| Storage | 5 – 35 °C, dry and ventilated, container upright and closed |
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