Packaging Materials for Chemical Products: 5 Critical Storage Mistakes and How to Avoid Them

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Packaging materials play a crucial role in protecting industrial chemicals from external influences, but improper storage can cause serious problems. From loss of raw material quality to the risk of leaks or chemical reactions, mistakes in this area cost companies time and money. However, following a few basic rules can ensure the stability of both the packaging and its contents. In this article, we focus on the five most common mistakes made when storing packaging materials and show how to effectively prevent them.

1. Underestimating packaging compatibility with chemical substances

One of the most common mistakes in storing chemical products is using unsuitable packaging material. Chemicals can react with the packaging, leading to its degradation, leaks, or product contamination. For example, organic solvents often damage polyethylene containers, while acids and alkalis can corrode metal drums. Before selecting packaging, it is essential to verify chemical compatibility according to safety data sheets (SDS) and the supplier's technical specifications.

In practice, it is recommended to conduct a compatibility test, where a small amount of the substance is left in contact with the packaging for several days to weeks. Changes such as discoloration, deformation, or leaks indicate incompatibility. For aggressive chemicals, special materials like fluorinated polymers or glass with a protective coating are suitable. It is also important to consider storage temperature conditions, which can accelerate reactions.

2. Improper Sealing and Closure of Packaging

Another critical mistake is inadequate or improper sealing of packaging, which can lead to leaks, evaporation of volatile substances, or contamination by moisture. For chemical products, it is crucial to use original closures with seals designed specifically for the given packaging and substance. For example, screw caps with PTFE seals are suitable for aggressive liquids, while safety closures with child-resistant features are used for toxic or corrosive substances.

When handling packaging, care must be taken to ensure that sealing surfaces are not contaminated or mechanically damaged. Before closing, it is advisable to check whether the lid is cracked or deformed. For large containers, such as drums or IBC containers, it is necessary to regularly check the tightness of valves and outlets. In the case of long-term storage, it is recommended to inspect the packaging regularly and re-seal it if necessary.

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3. Ignoring temperature and humidity storage conditions

Temperature and humidity are among the most frequently underestimated factors affecting the stability of chemical products and their packaging. High temperatures can cause liquid expansion, increased pressure in containers, or acceleration of chemical reactions, leading to packaging degradation. Conversely, low temperatures can cause crystallization or solidification of certain substances, making their subsequent use difficult. For example, polyols or some surfactants may lose their fluidity at low temperatures.

Humidity is another risk factor, especially for hygroscopic substances that absorb water from the air and alter their properties. Cardboard or paper packaging can lose strength due to moisture, increasing the risk of rupture. For sensitive chemicals, storage in air-conditioned spaces with controlled temperature and humidity is recommended, ideally within a range of 15–25 °C and relative humidity below 60 %. For outdoor storage, packaging must be protected from direct sunlight and precipitation.

4. Inadequate Labeling and Packaging Documentation

Missing or incorrect labeling of packaging poses a serious safety risk and can lead to substance mix-ups, improper use, or even injuries. According to CLP/GHS regulations, chemical packaging must be labeled with warning symbols, signal words ("Danger" or "Warning"), and standard hazard statements (H-phrases) and safety instructions (P-phrases). This information must be legible, durable, and placed in a visible location.

In addition to mandatory labeling, it is important to maintain accurate documentation of package contents, including the substance name, batch number, production date, and expiration date. For mixtures, it is necessary to specify the composition and percentage share of individual components. When transferring substances to other containers, the labeling must be updated immediately to prevent confusion. For better clarity, it is recommended to use color codes or barcoded labels to facilitate identification and inventory management.

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Exceeding maximum load capacity and improper stacking of packages

One of the most common yet most underestimated mistakes is exceeding the maximum load capacity of packaging or improper stacking. Manufacturers usually specify recommended limits for weight and stacking height to ensure stability and safety. Exceeding these values can lead to deformation, rupture, or even the collapse of the entire storage arrangement. For example, plastic drums with a capacity of 200 litres should not be stacked in more than two layers unless explicitly permitted by the manufacturer. For paper or cardboard packaging containing chemical concentrates, the risk is even higher—moisture or chemical vapours can weaken the material, increasing the likelihood of bursting.

Proper stacking requires not only adhering to weight limits but also ensuring even load distribution. Packaging should be stored on a flat, firm surface, ideally on pallets to prevent direct contact with the floor and allow air circulation. For heavy drums or containers, it is advisable to use stabilising systems such as metal frames or non-slip mats. Regular inspection of stacked packaging—especially after changes in temperature or humidity—can prevent unexpected accidents and material losses.

Failure to Adapt Packaging to Logistics Processes and Handling

Packaging for chemical products often undergoes several handling stages—from the manufacturer through storage and transport to final use by the customer. If not designed with these processes in mind, the risk of damage, leaks, or contamination increases. A typical example is the use of fragile glass packaging for substances that will be transported over long distances or handled manually. While glass offers excellent chemical resistance, its mechanical strength is limited. Alternatives may include plastic packaging with reinforcing ribs or metal containers, which better withstand impacts and vibrations.

Another critical point is the ergonomics of packaging. Overly heavy or unwieldy packages make handling difficult and increase the risk of workplace injuries. For example, drums with a capacity over 60 litres should be equipped with handles or the option to use handling equipment such as pallet trucks or cranes. For smaller packages, such as canisters or bottles, it is important to consider their shape and size – a neck that is too narrow or a slippery surface can make precise dosing difficult and increase the risk of spills. Investing in packaging optimised for specific logistical needs pays off in the form of lower costs for damaged goods and greater employee safety.

Neglecting Recycling and Environmental Aspects of Packaging Materials

In today's world, where sustainability and compliance with environmental regulations are increasingly emphasised, neglecting packaging recycling is a serious mistake. Chemical packaging often contains residues of hazardous substances that require special disposal procedures in accordance with REACH regulations and other legislation. Improper handling of used packaging can lead to fines, environmental damage, or even liability for ecological accidents. For example, plastic packaging containing aggressive chemicals cannot simply be thrown into regular waste – it must first be cleaned using standard procedures or handed over to a specialised company.

A proactive approach to recycling and environmental protection can also bring economic benefits. Many chemical raw material manufacturers offer packaging take-back systems that allow for their reuse or recycling. For example, metal drums can be thoroughly cleaned and inspected before being refilled, reducing the cost of new packaging. For plastic packaging, it is possible to use materials certified for repeated use or biodegradable alternatives, if compatibility with the chemicals allows. It is also important to train employees in proper sorting and disposal of packaging to avoid mistakes and unnecessary costs.

Need help with selection or storage?

Every chemical raw material requires an individual approach – from selecting the appropriate packaging material to optimal storage conditions. GCG Group provides detailed safety and technical data sheets for each product and advises on the specific requirements of your operations. Contact us – or browse our catalogue of over 1,300 products right away.