Reading Safety Data Sheets (SDS)
A practical guide to the 16-section GHS safety data sheet — what each section tells coating applicators, specifiers and safety managers, and where SDSs fall short.
Key takeaways
- A safety data sheet (SDS) is the supplier’s official statement of a product’s hazards and how to handle it safely; it follows a standard 16-section format under the Globally Harmonized System (GHS).
- For coating work, Sections 2, 3, 7, 8, 9 and 11 answer most practical questions about hazards, ingredients, storage, PPE, flammability and health effects.
- Multi-component coatings have a separate SDS for each part, and the thinner and cleaner need their own SDSs too.
- An SDS is a starting point, not a complete risk assessment — combine it with exposure assessment, your employer’s program and local regulations.
Every coating, curing agent, thinner, cleaner and abrasive used at work should come with a safety data sheet. In the United States, OSHA’s Hazard Communication Standard (29 CFR 1910.1200) requires manufacturers and importers to provide SDSs and employers to keep them readily accessible to workers during each shift. Comparable requirements exist under REACH in the European Union, in Canada’s WHMIS and in many other countries.
The SDS is often confused with the product data sheet. The product data sheet tells you how to apply a coating so it performs; the SDS tells you how to handle it without harming people or the environment. You need both.
The 16 sections at a glance
GHS-aligned SDSs use the same section order everywhere, which makes them faster to read once you know the layout.
| Section | Title | What coating users look for |
|---|---|---|
| 1 | Identification | Product name and code, supplier, emergency phone number |
| 2 | Hazard identification | Classification, pictograms, signal word, hazard and precautionary statements |
| 3 | Composition / ingredients | Hazardous ingredients, CAS numbers and concentration ranges |
| 4 | First-aid measures | Actions for inhalation, skin, eye contact and ingestion |
| 5 | Fire-fighting measures | Suitable extinguishing media, combustion hazards |
| 6 | Accidental release measures | Spill containment and cleanup |
| 7 | Handling and storage | Storage temperatures, incompatibles, static precautions |
| 8 | Exposure controls / personal protection | Exposure limits, ventilation, respirator, glove and eye protection |
| 9 | Physical and chemical properties | Flash point, explosive limits, vapor pressure, VOC content |
| 10 | Stability and reactivity | Incompatible materials, hazardous decomposition products |
| 11 | Toxicological information | Acute and chronic effects, sensitization, carcinogenicity |
| 12 | Ecological information | Aquatic toxicity, persistence |
| 13 | Disposal considerations | Waste handling guidance |
| 14 | Transport information | UN number, shipping name, hazard class, packing group |
| 15 | Regulatory information | Inventory listings and regulatory notices |
| 16 | Other information | Revision date and changes |
OSHA requires Sections 12 to 15 to be present for GHS consistency but does not enforce their content, because those subjects are regulated by other agencies.
Pictograms, signal words and statements
Section 2 summarizes the hazards in standardized language that also appears on the container label:
- Pictograms — red-bordered diamonds such as the flame (flammable), exclamation mark (irritant, skin sensitizer), health hazard (respiratory sensitizer, carcinogen, organ toxicity), corrosion and environment symbols.
- Signal word — Danger for more severe hazards, Warning for less severe ones.
- Hazard statements (H-statements) — standard phrases such as “May cause an allergic skin reaction” or “Highly flammable liquid and vapour”.
- Precautionary statements (P-statements) — prevention, response, storage and disposal instructions.
Watch for sensitization statements in particular. Skin sensitizers (common in epoxy resins and amine curing agents) and respiratory sensitizers (common in isocyanate-containing products) can cause lifelong allergy; see epoxy skin sensitization and isocyanate safety.
The sections applicators use most
Section 3: what is in it
Ingredients are listed with concentrations, often as ranges, and some may be withheld as trade secrets provided the hazards are still disclosed. Look for solvents, isocyanate monomers, reactive diluents, crystalline silica fillers and heavy-metal pigments.
Section 8: how to protect yourself
This section lists occupational exposure limits — which may come from OSHA, ACGIH, national authorities or the manufacturer — and recommended engineering controls and PPE. Recommendations are often generic (“use suitable respiratory protection”), so they must be translated into specific choices through your employer’s program; see PPE for coating applicators.
Section 9: how it behaves
Flash point, explosive limits, vapor density, specific gravity and VOC content. Flash point is the quickest indicator of fire risk; see fire and explosion hazards.
Sections 7, 10 and 11: storage, reactivity and health
Section 7 gives storage temperature limits and incompatibilities, Section 10 flags dangerous reactions — for example, isocyanate components reacting with moisture and building pressure in closed containers — and Section 11 describes acute and long-term health effects.
Multi-component products
Two- and three-component coatings ship with one SDS per component, and each can have very different hazards: an epoxy base may be a skin sensitizer and aquatic toxin, while its amine curing agent may also be corrosive. Once mixed, the material carries the hazards of both, plus heat from the reaction in large masses. Review every component SDS, plus thinners, cleaners, primers and abrasives, before work starts.
SDSs are revised when hazard information or regulations change. Check the revision date in Section 16 and make sure the copy in your binder or electronic system matches the product actually on site.
How to review an SDS before a job
- Collect all of them. Every component, thinner, cleaner, primer and abrasive on the job.
- Read Section 2 first. Note pictograms, signal words and any sensitizer or carcinogen statements.
- Check Sections 8 and 9. Record exposure limits, PPE recommendations, flash points and VOC content.
- Compare with the work method. Spraying in an enclosed space creates exposures far above brushing outdoors; generic advice may not cover it.
- Plan emergencies and waste. Use Sections 4, 5, 6 and 13 for first aid, fire, spill and disposal planning.
- Brief the crew. Share the key hazards and controls at the pre-job safety meeting.
If an SDS is vague, out of date or missing exposure-limit or glove information, contact the manufacturer’s technical or product-safety department. They can often provide glove permeation data or more specific guidance.
Frequently asked questions
Is an SDS the same as an MSDS?
The SDS replaced the older material safety data sheet (MSDS). The SDS uses a fixed 16-section GHS format, whereas MSDS formats varied by supplier and country.
Do I need an SDS for consumer paint bought at a store?
If it is used at work, hazard communication rules generally apply, and manufacturers usually publish SDSs online. Some limited exemptions exist for consumer products used in a consumer-like way; check local rules.
Does following the SDS guarantee compliance?
No. The SDS describes the product, not your workplace. Exposure assessment, local regulations and your employer’s safety program determine the controls actually required.
Educational reference. Coating performance varies by formulation. Always follow the manufacturer’s product data sheet, safety data sheet and your project specification.
