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UN-approved plastic containers for hazardous goods, acids, alkalis and flammable liquids – compliant with ADR/RID/IMDG, available from stock.
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At a glance
Plastic safety containers are UN type-approved vessels for storing and transporting hazardous liquids and solids. Anyone moving chemicals, acids, alkalis or flammable liquids is subject to the dangerous-goods regulations ADR (road), RID (rail) and IMDG (sea). An admissible container bears the UN mark («u» above «n» in a circle) with a design-type code (e.g. 3H1 for tight plastic canisters), packing group (X/Y/Z) and year of manufacture. Which container is permitted depends on the filling material: hazard class, packing group and the chemical resistance of the material must match. PE-HD and PP cover many applications; aggressive oxidisers or hydrofluoric acid require special materials. The choice is to be made by filling material and design type, never blanket.
Product worlds
UN-tested stackable canisters in PE-HD, 2 to 30 litres, for liquid hazardous goods of groups II and III – available electrically dissipative or with a degassing closure that prevents overpressure inside the container.
In the shop
Wide-neck bottles in PE-HD for powders, granulates and solids – with tamper-evident closure and UN approval.
In the shop
Narrow-neck bottles in PE-HD with UN approval, 500 to 2500 ml – for solvents, acids and alkalis.
In the shop
Storage containers in PE-HD with scale or drain tap, 5 to 60 litres – for preparation, decanting and collection.
In the shopMaterial choice by acid, alkali, solvent or oxidiser – with resistance check.
To the guideWhy Semadeni for Safety containers for chemicals and hazardous goods
Containers with the UN mark meet ADR/RID/IMDG. The approval is design-type- and filling-material-specific, not a general material property.
Coding X, Y or Z for the admissible hazard level – the right group follows from the hazard label and safety data sheet of the filling material.
PE-HD resists many alkalis and dilute acids; for hydrofluoric acid or concentrated oxidisers we recommend special materials such as PVDF – to be checked by medium.
For flammable liquids of class F-A we supply electrically dissipative versions with proof of conductivity.
For every UN-approved container, a test report and declaration of conformity are available on request – per design type and contents.
Common volumes from 1 to 60 litres from stock, complemented by custom manufacturing from our own Swiss production and labelling in Ostermundigen.
Evidence & compliance
Semadeni AG is certified to ISO 9001, ISO 14001, EN ISO 13485, ISO 22000 and ISO/TS 22002-4 and rated EcoVadis Gold (84/100). Data sheets and declarations of conformity are supplied on request, per product and application rather than as a blanket document.
For your supplier file
Typical set-up
A typical selection scenario: for road transport of a dilute acid of packing group II, the choice falls on an PE-HD canister coded UN 3H1/Y with a current year of manufacture. We take the hazard class and packing group from the safety data sheet and check material resistance against the actual medium. Which design type is admissible we clarify by filling material and regulation.
In detail
Anyone storing or transporting chemicals, acids, alkalis or flammable liquids is subject to strict regulations. Semadeni offers UN-approved plastic containers (e.g. UN 3H1, UN 3H2) that meet the requirements of ADR (road transport), RID (rail) and IMDG (sea). Which container is admissible follows from the filling material and its dangerous-goods classification.
Canisters (UN 3H1) Flat canisters and round containers in PE-HD in volumes from 1 to 30 litres. Suitable for liquid hazardous goods of packing groups II and III.
Wide-neck containers (UN 3H2) For solid and pasty hazardous goods as well as viscous liquids. Screw caps GL 63 to GL 120.
Safety bottles with venting For chemicals that can build up pressure. A built-in valve prevents overpressure failure.
The following overview is a reference point; resistance is to be checked by medium, concentration and temperature:
| Medium | Reference material |
|---|---|
| Dilute acids (e.g. HCl, dilute H₂SO₄) | PE-HD |
| Alkalis (e.g. NaOH) | PE-HD, PP |
| Solvents, alcohols | PE-HD (check by medium) |
| Oxidising chemicals | PVDF, possibly PE-HD (verified) |
| Flammable liquids cl. F-A | PE-HD, electrically dissipative |
All UN-approved containers carry the UN marking with design-type code, packing group, year of manufacture and country of approval. On request, Semadeni supplies the declaration of conformity and the test report.
Note: The dangerous-goods regulations (ADR/RID, GHS/CLP) determine which packing group applies to your medium. Our specialists support the selection of the admissible design type.
The packing group (X, Y or Z) indicates the maximum admissible degree of hazard: X = groups I–III, Y = groups II and III, Z = group III only. The right group follows from the UN hazard label and the safety data sheet of the filling material.
PE-HD resists many dilute and concentrated alkalis (e.g. NaOH) as well as numerous acids (e.g. HCl, dilute H₂SO₄). For hydrofluoric acid (HF) and concentrated oxidisers we recommend PVDF or PTFE. Resistance is to be checked by medium and concentration – consult the resistance table or ask our technical team.
For flammable liquids of hazard class F-A (e.g. acetone, ethanol) electrically dissipative containers that prevent static charge build-up are advisable. Semadeni supplies corresponding canisters with proof of conductivity – the specific requirements depend on the dangerous-goods classification.
The type-design test is time-limited and must be renewed periodically per ADR; the year of manufacture is given in the UN mark. A container's approval is valid for five years from its date of manufacture. Use only containers with a current approval – older batches can be expired despite a correct mark.
Yes – for every UN-approved container, test reports and declarations of conformity are available on request. Decisive is the tested design type together with the admissible contents, not a general assurance.
Plastic solutions for industry, mechanical engineering and trade: spill pallets, containers, cut-to-size semi-finished products and special constructions in PP, PE, PVC-U and other technical thermoplastics – custom manufacturing to drawing from batch size one, from Swiss production in Ostermundigen.
Plastic containers, stacking boxes, euro containers and reusable containers for warehouse, logistics and in-house transport: standardised storage containers, plastic pallets, picking boxes, UN-approved dangerous-goods packaging and industrial packaging – from stock and from Swiss production in Ostermundigen.
Laboratory consumables, sample vessels and custom parts in plastic for the laboratory, life science and pharma: tubes and racks, liquid handling, filtration, cell culture – chemical-resistant, sterilisable and over 8,000 articles from stock. Swiss development and production in Ostermundigen.
How resistant is a plastic to a chemical? Semadeni's resistance list rates 26 plastics against individual substances at 20, 40 and 60 °C. This guide explains the classes a, b and c, shows values for common media and says where the list reaches its limits.
Tell us the filling material, hazard class, packing group and volume – we recommend the design type and material and supply the test report and declaration of conformity. Personal advice from Ostermundigen and Vienna.
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