How to Read and Understand Safety Data Sheets (SDS) for Industrial Adhesives and Sealants: A Practical Guide for Technicians and Buyers

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Industrial adhesives and sealants are an indispensable part of many manufacturing processes, from the automotive industry to construction. However, their correct use requires not only technical knowledge but also a thorough understanding of safety documents. The Safety Data Sheet (SDS) is the primary source of information on the risks, storage, and handling of these chemical products. Nevertheless, in practice, we often encounter situations where technicians or buyers overlook some key data—whether due to lack of time or complex terminology. This article will help you navigate SDS like a professional and avoid common mistakes that can lead to safety incidents or unnecessary costs.

Why the Safety Data Sheet (SDS) is a Key Document for Working with Adhesives and Sealants

A Safety Data Sheet (SDS) is a fundamental document that provides comprehensive information on the chemical properties, risks, and safe handling of industrial adhesives and sealants. For technicians, buyers, and occupational safety workers, its proper understanding is essential not only from a legislative perspective but also for health protection and accident prevention. Under the REACH regulation, every supplier of chemical substances and mixtures must provide an up-to-date SDS in the language of the country where the product is placed on the market. This means that Czech companies are entitled to an SDS in Czech, which facilitates orientation and minimizes the risk of misunderstandings.

Adhesives and sealants often contain reactive components such as epoxy resins, polyurethane systems, or cyanoacrylates, which can cause health issues (e.g., skin irritation, allergies, or respiratory tract damage) if handled improperly. The SDS provides precise instructions for storage, handling, and disposal, including information on personal protective equipment (PPE) and procedures in case of spills or fires. For buyers, the SDS is also an important basis for selecting the appropriate product—e.g., in terms of material compatibility or the customer’s environmental requirements.

Structure of the Safety Data Sheet according to CLP and GHS Regulations: What You Will Find in Each Section

The Safety Data Sheet is standardized according to the international GHS (Globally Harmonized System) and the CLP (Classification, Labelling and Packaging) regulation, which unifies the classification and labelling of chemical substances in the EU. The SDS consists of 16 mandatory sections, each serving a specific purpose. The first four sections (identification of the substance/mixture and the company, hazard identification, composition/information on ingredients, first-aid measures) are critical for immediate response in case of an accident. For example, Section 2 provides the hazard classification according to CLP, including warning symbols (pictograms) and standardized hazard statements (H-statements) and precautionary statements (P-statements).

Other key sections include fire-fighting measures (Section 5), accidental release measures (Section 6), handling and storage instructions (Section 7), and exposure controls/personal protection information (Section 8). For technicians, Section 9 is particularly important, as it describes the physico-chemical properties of the product (e.g., viscosity, flash point, or pH), and Section 10, which covers stability and reactivity. This data helps determine whether the product is suitable for specific applications, such as bonding metals at elevated temperatures or in high-humidity environments.

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How to correctly interpret hazard classification and warning symbols

The hazard classification in the SDS is based on the CLP Regulation and standardized criteria. Warning symbols (pictograms) and H-statements (Hazard statements) provide quick visual and textual information about the main risks associated with the product. For example, a flame pictogram indicates flammable substances, while the symbol for corrosive effects warns of possible skin burns or material damage. For adhesives and sealants, you will often encounter a pictogram indicating health hazards (e.g., irritation, sensitization, or inhalation toxicity).

H-statements specify the nature of the hazard in more detail – for example, "H317: May cause an allergic skin reaction" or "H335: May cause respiratory irritation." This information is crucial for selecting appropriate protective equipment, such as nitrile gloves (resistant to chemicals) or respirators with filters against organic vapors. For buyers, it is important to compare H-statements for different products to choose the option with the lowest risk for a specific application. For instance, when bonding in enclosed spaces, it is advisable to prefer products without H-statements regarding respiratory irritation.

Practical Tips for Working with SDS: How to Use the Information in Everyday Practice

For technicians and production workers, it is crucial to regularly update SDS and ensure their availability in the workplace. It is recommended to create an internal SDS database where current versions for all products used are stored. Before starting work with a new adhesive or sealant, it is necessary to study sections 7 (handling and storage) and 8 (personal protective equipment) to avoid mistakes such as storing flammable products near heat sources or using unsuitable gloves. For high-viscosity products, it is important to check the application instructions (e.g., recommended temperature or curing time) in section 9.

Buyers should use SDS as a tool for comparing products from different suppliers. For example, in the case of epoxy adhesives, it is advisable to compare the content of volatile organic compounds (VOC) in Section 12 (ecological information) or disposal instructions in Section 13. It is also important to verify whether the product meets the customer's specific requirements, such as certifications for the food industry (Section 15). If there are any uncertainties, it is possible to contact the supplier with a request for additional information, such as test results on compatibility with specific materials.

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REACH and its impact on safety data sheets for adhesives and sealants: What you need to know

The REACH Regulation (Registration, Evaluation, Authorisation and Restriction of Chemicals) fundamentally influences the form and content of Safety Data Sheets (SDS) for industrial adhesives and sealants. Its goal is to ensure a high level of protection for human health and the environment while maintaining the competitiveness of the European chemical industry. For technicians and buyers, this means that every supplied SDS must contain information on the registration of the substance or mixture under REACH, including the registration number if the substance is registered in quantities exceeding one tonne per year. This enables traceability and verification that the product is legally placed on the market.

An important aspect of REACH is also the identification of Substances of Very High Concern (SVHC). These substances are gradually being replaced by safer alternatives. If an adhesive or sealant contains an SVHC in a concentration exceeding 0.1% by weight, this information must be stated in Section 3 of the SDS. For buyers, this means the need to carefully check the composition of products and prefer those that do not contain critical substances, thereby reducing the risk of future regulatory restrictions or bans.

How to verify the validity and currency of a Safety Data Sheet: A checklist for technicians

A Safety Data Sheet is not a static document – it must reflect current legislative requirements and scientific knowledge. The validity of an SDS is limited to a maximum of 5 years from the date of issue, but in practice, it should be updated immediately after any change in composition, classification, or safety measures. As a first step, technicians should check the issue or revision date in the document header. If the SDS is older than 3 years, it is recommended to request a newer version from the supplier, especially for products with frequent innovations or changes in legislation.

Another critical point is verifying whether the SDS complies with the current version of the CLP and GHS regulations. This includes checking the hazard pictograms, signal words ("Danger" or "Warning"), and standard hazard statements (H-phrases) and safe handling instructions (P-phrases). These elements must be consistent with the valid classification of the substance or mixture. If you encounter outdated symbols (e.g., orange squares according to the old Directive 67/548/EEC), this is a clear sign that the SDS is not up to date and should be replaced.

SDS and Requirements for Storage and Handling of Adhesives and Sealants: Practical Guidelines for Operations

Section 7 of the safety data sheet contains key information for the safe storage and handling of adhesives and sealants. Operations technicians should pay special attention to requirements regarding temperature conditions, humidity, and separate storage from incompatible substances. For example, cyanoacrylate adhesives require storage at temperatures below 25 °C and low humidity to prevent premature polymerization. Conversely, epoxy systems may require storage at temperatures above 15 °C to avoid resin crystallization.

An important aspect is also protection against static electricity, especially for flammable solvent-based adhesives. The SDS usually specifies whether grounded containers or antistatic packaging must be used. For handling large volumes, it is recommended to use closed systems with vapor extraction to minimize the risk of worker exposure. It is always necessary to follow the instructions for the maximum open storage time (pot life) and conditions for resealing containers, which are often listed in Sections 7 or 10 of the SDS.

Need Clear and Precise Information?

At GCG Group, we provide complete safety and technical documentation for every raw material supplied, including detailed SDS. Our experts will be happy to advise you on selecting the right product and explain the specifics of its use – so you can be sure you are working with verified and safe materials. Contact us – or browse our catalog of over 1,300 products right away.