SDS Label Requirements: Elements, Pictograms, and 2024 Updates

Under OSHA’s Hazard Communication Standard, SDS label requirements set six pieces of information that every shipped container of a hazardous chemical must carry: a product identifier, a signal word, hazard statements, pictograms, precautionary statements, and the manufacturer’s contact information. All six come directly from the chemical’s Safety Data Sheet, and all six appear in 29 CFR 1910.1200(f)(1).1eCFR. 29 CFR 1910.1200 – Hazard Communication

The Six Required Label Elements

Each element does a specific job on the container:

  • Product identifier. The name or number that matches the chemical’s listing in Section 1 of its Safety Data Sheet. This is how a worker connects the container in front of them to the correct SDS.
  • Signal word. Either “Danger” for more severe hazards or “Warning” for less severe ones. Only one signal word appears per label, even when the chemical falls into multiple hazard categories.
  • Hazard statements. Short standardized phrases describing the risk, such as “Highly flammable liquid and vapor” or “Causes serious eye irritation.”
  • Pictograms. Black symbols on a white background inside a red diamond-shaped border, each flagging a specific hazard category at a glance.
  • Precautionary statements. Instructions covering safe handling, storage, first aid, and disposal.
  • Manufacturer contact information. The name, address, and phone number of the chemical manufacturer, importer, or other responsible party.

These requirements apply to every hazardous chemical container that leaves a workplace for shipment. Distributors and manufacturers handle most of the burden at that point, so downstream employers usually receive containers that already comply. The rules shift once a chemical is opened and transferred inside the workplace.

The Eight Pictograms and What Each One Means

OSHA designates eight mandatory pictograms, plus one non-mandatory environmental symbol. A single chemical can carry more than one when its hazards fit more than one category.2Occupational Safety and Health Administration. 29 CFR 1910.1200 App C – Allocation of Label Elements

  • Exploding bomb. Explosives, self-reactive chemicals, and organic peroxides.
  • Flame. Flammable liquids, gases, and solids, plus pyrophoric and self-heating substances and desensitized explosives.
  • Flame over circle. Oxidizers that can intensify a fire by supplying oxygen.
  • Gas cylinder. Gases stored under pressure, including compressed, liquefied, and dissolved gases.
  • Corrosion. Chemicals that cause skin burns, serious eye damage, or corrode metals.
  • Skull and crossbones. Acutely toxic substances that can be fatal or toxic through ingestion, skin contact, or inhalation.
  • Exclamation mark. Irritants, skin sensitizers, chemicals with narcotic effects, and lower-level acute toxicity.
  • Health hazard. Carcinogens, reproductive toxins, respiratory sensitizers, and chemicals that damage specific organs over time.
  • Environment (non-mandatory). Chemicals toxic to aquatic life. Many manufacturers include this voluntarily.

A flammable solvent that is also acutely toxic, for instance, would carry both the flame and the skull and crossbones.3Occupational Safety and Health Administration. Hazard Communication Standard Pictogram QuickCard

Where the Label Content Comes From

The Safety Data Sheet is the source document. Every label element traces back to it, and three of the SDS’s sixteen standardized sections do most of the work.4Occupational Safety and Health Administration. Hazard Communication Standard – Safety Data Sheets

  • Section 1, Identification. Supplies the product identifier and manufacturer contact information.
  • Section 2, Hazard Identification. Supplies the signal word, pictograms, hazard statements, and precautionary statements. This section essentially pre-populates the label.
  • Section 8, Exposure Controls. Provides personal protective equipment recommendations and exposure limits that shape the precautionary statements.

The product identifier on the label must match the identifier in Section 1 of the SDS exactly. A mismatch means a worker looking up hazards during an emergency could pull the wrong sheet. Labeling software that imports data straight from a digital SDS library reduces transcription errors, and pre-formatted templates with a field for each required element help catch omissions before the label is printed.

Secondary and Portable Containers Inside the Workplace

When a worker transfers a chemical from its original shipping container into a spray bottle, beaker, or other vessel, that new container needs a label of its own. OSHA gives employers two options. One is to reproduce the full shipped-container label. The other is a simpler workplace label carrying the product identifier along with words, pictures, or symbols that convey the hazards in general terms. The simpler option is only acceptable when workers can still access full hazard information through the employer’s written hazard communication program.1eCFR. 29 CFR 1910.1200 – Hazard Communication

One narrow exception applies. A portable container intended for the immediate use of the worker who fills it does not need a label. “Immediate use” means the same person consumes the entire contents during their own work shift. Once someone else picks up the container, or the substance sits overnight, the exemption is gone and a label is required.

Internal rating systems like the NFPA 704 diamond or HMIS color-coded bars are acceptable on workplace containers, provided employees are trained to interpret them and still have access to the underlying GHS information.

Stationary Process Containers

Storage tanks, reactor vessels, and piping systems pose a practical problem: a printed adhesive label often isn’t the right tool. OSHA allows employers to use signs, placards, batch tickets, or operating procedures in place of a directly affixed label on stationary process equipment. The alternative must identify which container it covers, communicate the required hazard information, and remain available to workers across every shift.

Simply keying a container to a code number that points to an SDS stored elsewhere does not meet the requirement. OSHA has said that any alternative labeling system has to provide an immediate visual warning of the hazards, not just a cross-reference.5Occupational Safety and Health Administration. Labeling Provisions of the Hazard Communication Standard For batch vessels whose contents change often, a posted batch process sheet at the work station that lists hazard warnings for the current batch works.

Small Containers

Small packaging isn’t exempt, but the 2024 revision added flexibility for containers of 100 milliliters or less.6Occupational Safety and Health Administration. Final Rule Modifying the HCS to Maintain Alignment With the GHS When a full adhesive label physically won’t fit, OSHA permits pull-out tabs, fold-back labels, or attached tags. If none of those work either, an abbreviated label is allowed as long as the outer packaging carries the complete GHS label.

The abbreviated label must include at minimum the product identifier, the appropriate pictograms, the signal word, the manufacturer’s name and phone number, and a statement directing users to the outer packaging for full information. Cost by itself is not a valid reason to choose the abbreviated route over a pull-out or fold-back label.

Language, Placement, and Durability

All required label content must be printed in English. Employers may add other languages for their workforce, but English is not optional.

Before a label goes on, the container surface should be clean and dry, since oil, dust, and moisture interfere with adhesive bonding. Labels belong where they are clearly visible, not tucked behind a handle or wrapped around a tight curve that warps the print. After application, labels need periodic inspection. Chemical splashes degrade ink, solvents dissolve adhesive, and UV exposure fades print over time. A damaged or unreadable label has to be replaced immediately, not at the next maintenance cycle.

Training and the Written Program

Labels are only useful when workers can read them. OSHA requires every employer with hazardous chemicals on site to maintain a written hazard communication program that includes employee training. Training has to cover four topics at minimum:

  • Detection. How to recognize when a hazardous chemical has been released, whether through monitoring equipment, visual cues, or smell.
  • Hazards present. The specific physical and health hazards of chemicals in the worker’s area.
  • Protective measures. Work practices, emergency procedures, and personal protective equipment.
  • Program details. How the labeling system works, what labels on shipped containers mean, how to find and read a Safety Data Sheet, and how to apply the information on the job.

Training is not a one-time event. New training is required whenever a new chemical hazard is introduced into the work area. The written program itself must list every hazardous chemical on site, describe the labeling system in use, explain how SDSs are distributed and accessed, and outline the training schedule.7Occupational Safety and Health Administration. Hazard Communication Employers who don’t manufacture or import chemicals still need this program; they focus on workplace labeling, SDS access, and training rather than classification and authoring.

Penalties for Labeling Violations

Mislabeling a container is a serious violation. The current maximum penalty for a serious violation is $16,550, and willful or repeated violations can reach $165,514 per violation.8Occupational Safety and Health Administration. OSHA Penalties The Department of Labor did not adjust these amounts for 2026, so the 2025 levels remain in effect.9Federal Register. Department of Labor Federal Civil Penalties Inflation Adjustment Act Annual Adjustments for 2026

What the 2024 Revision Changes and When

OSHA published a final rule on May 20, 2024, aligning the Hazard Communication Standard with the seventh revision of the UN GHS.10Occupational Safety and Health Administration. OSHA’s Final Rule to Amend the Hazard Communication Standard The rule adds a hazard class for desensitized explosives, updates flammable gas and aerosol classifications, provides new flexibility for labeling small containers and bulk shipments, and introduces prescribed concentration ranges for trade secret ingredients on SDSs.

In January 2026, OSHA extended the original compliance deadlines by four months. The current schedule:11Federal Register. Hazard Communication Standard

  • May 19, 2026. Manufacturers, importers, and distributors must comply with the revised standard for substances.
  • November 20, 2026. Employers must update workplace labels, written hazard communication programs, and training for substances.
  • November 19, 2027. Manufacturers, importers, and distributors must comply for mixtures.
  • May 19, 2028. Employers must update workplace labels, programs, and training for mixtures.

Until each applicable deadline arrives, covered parties may follow the 2012 HCS, the revised 2024 HCS, or a combination. Employers who receive chemicals from multiple suppliers should expect labels in both formats during the transition, and training should prepare workers to recognize either version.