A Safety Data Sheet (SDS) is an essential document used to communicate information about the hazards, safe handling, storage, transportation, and emergency response measures associated with a chemical product. It helps workers, manufacturers, distributors, transporters, and industrial buyers understand the risks of using or handling chemical substances.

Previously known as a Material Safety Data Sheet (MSDS), the SDS follows a standardized 16-section format under the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). This structure makes important safety information easier to locate and understand across workplaces and supply chains.

For chemical manufacturers and suppliers, providing accurate and up-to-date SDS documentation is an important part of product stewardship and regulatory compliance.

What Is the Purpose of an SDS?

An SDS provides practical information that helps organizations manage chemical-related risks throughout a product's lifecycle. It supports:

• Hazard identification: Explains physical, health, and environmental hazards.

• Safe handling: Provides precautions for handling and using chemicals.

• Storage management: Identifies suitable storage conditions and incompatibilities.

• Emergency response: Gives guidance for first aid, fire incidents, and accidental releases.

• Workplace training: Helps employees understand chemical risks and protective measures.

• Regulatory compliance: Supports chemical hazard communication and documentation obligations.

An SDS should be accessible to employees and other relevant users who may be exposed to the chemical in the workplace.

Understanding the 16 Essential Sections of an SDS

An SDS follows a standardized structure of 16 sections. Each section communicates a different aspect of chemical safety and handling.

Sections 1–8: Identification, hazards, and immediate safety

1. Section 1: Identification

   Includes the product name, chemical identification, recommended uses, supplier details, and emergency contact number.

2. Section 2: Hazard(s) Identification

   Explains the chemical's hazards, classification, signal words, hazard statements, pictograms, and precautionary statements.

3. Section 3: Composition / Information on Ingredients

   Identifies the chemical substances, ingredients, relevant concentrations, and applicable identification numbers.

4. Section 4: First-Aid Measures

   Provides instructions for responding to exposure through inhalation, skin contact, eye contact, or ingestion.

5. Section 5: Fire-Fighting Measures

   Describes suitable extinguishing methods, fire-related hazards, and protective equipment for firefighters.

6. Section 6: Accidental Release Measures

   Explains how to manage spills, leaks, and accidental releases, including personal protection and cleanup procedures.

7. Section 7: Handling and Storage

   Provides safe handling practices, storage conditions, and information about incompatible materials.

8. Section 8: Exposure Controls / Personal Protection

   Covers applicable exposure limits, engineering controls, ventilation, and personal protective equipment (PPE), such as gloves, goggles, and respirators.

Sections 9–16: Technical, environmental, and regulatory information

9. Section 9: Physical and Chemical Properties

   Describes properties such as appearance, odor, pH, melting point, boiling point, flash point, and solubility, where relevant.

10. Section 10: Stability and Reactivity

    Explains chemical stability, possible hazardous reactions, conditions to avoid, and incompatible materials.

11. Section 11: Toxicological Information

    Provides information about potential health effects, routes of exposure, symptoms, and relevant toxicological data.

12. Section 12: Ecological Information

    Describes potential environmental effects, including aquatic toxicity, persistence, and degradability.

13. Section 13: Disposal Considerations

    Provides guidance on safe disposal of the chemical, contaminated packaging, and waste materials.

14. Section 14: Transport Information

    Includes transport-related information such as UN number, proper shipping name, hazard class, and packing group, where applicable.

15. Section 15: Regulatory Information

    Identifies relevant safety, health, and environmental regulations applicable to the chemical.

16. Section 16: Other Information

    Includes the preparation or revision date, changes made to the SDS, references, abbreviations, and other relevant information.

The 16-section structure is described in OSHA's Hazard Communication Standard and the EU REACH requirements.

Important SDS Compliance Requirements

Preparing an SDS involves more than filling in the 16 headings. Chemical manufacturers, importers, and suppliers must ensure that the information is accurate and meets the requirements of the markets where their products are supplied.

1. Follow the GHS Classification System

The Globally Harmonized System (GHS) provides a framework for classifying chemical hazards and communicating them through labels and safety documentation.

An SDS should communicate the relevant hazard classifications, pictograms, signal words, and precautionary statements. The information must be consistent with the chemical's hazard classification and product labeling.

2. Use the Correct 16-Section Format

The SDS should follow the required section headings and sequence. Under OSHA's requirements, Sections 1–11 and 16 have specified mandatory content, while Sections 12–15 are included in the standard format but are not enforced by OSHA under its Hazard Communication Standard.

Other jurisdictions may have different requirements. For example, EU SDS requirements are established under REACH Annex II.

3. Provide Accurate and Updated Information

SDS information should reflect the actual chemical product, its hazards, and its intended uses. Suppliers should review and revise documentation when relevant information changes, including hazard classifications, composition, or regulatory requirements.

4. Ensure Appropriate Language and Accessibility

SDS documents should be written in clear, understandable language and provided in the language required by the relevant market. Employees and downstream users should be able to access the document when needed.

5. Maintain Consistency Between SDS and Product Labels

The product identifier, hazard classifications, pictograms, signal words, and precautionary information should be consistent between the SDS and the chemical's label.

6. Include Revision and Supplier Information

The document should identify its preparation or revision date, supplier details, and relevant emergency contact information. Changes made in revised versions should be clearly communicated where required.

The EU's Regulation 2020/878 provides detailed requirements for SDS preparation, including clarity, revision information, and document formatting

Who Needs a Safety Data Sheet?

SDS documentation is important across industries that manufacture, import, distribute, store, or use chemicals.

SDS supply obligations depend on the chemical, its classification, the intended market, and the applicable regulations. For example, EU REACH identifies specific circumstances in which suppliers must provide SDSs to downstream users.

Common Mistakes in SDS Preparation

Incomplete or inaccurate SDS documentation can create safety and compliance problems for businesses. Some common mistakes include:

• Using outdated chemical classifications or hazard information.

• Providing incorrect product names or supplier contact details.

• Copying generic information that does not match the actual chemical.

• Missing important first-aid or spill-response instructions.

• Providing incorrect PPE recommendations.

• Using inconsistent hazard information between the SDS and product label.

• Failing to review and update the document when relevant information changes.

• Preparing an SDS without checking the requirements of the destination market.

A well-prepared SDS should be specific to the chemical product and based on reliable technical and regulatory information.

How Businesses Can Maintain SDS Compliance

Companies can improve their chemical safety documentation processes through a structured approach:

1. Identify chemical products: Maintain an inventory of substances and mixtures handled or supplied by the business.

2. Collect technical information: Obtain composition, hazard classification, physical properties, and relevant safety data.

3. Prepare or review SDS documents: Ensure all applicable sections contain accurate information.

4. Verify regulatory requirements: Check the applicable GHS implementation and national or regional chemical regulations.

5. Compare labels and SDS documents: Confirm that product identification and hazard communication are consistent.

6. Control document versions: Maintain revision dates and records of updated SDS documents.

7. Train employees: Explain how to locate and interpret SDS information, particularly emergency and exposure-control instructions.

Businesses should assign responsibility for SDS management to appropriately trained personnel and maintain a reliable process for distributing updated documents.