8.2: Safety Data Sheets (SDSs)

The Hazard Communication Standard (HCS) requires chemical manufacturers, distributors, or importers to provide Safety Data Sheets (SDSs) (formerly known as Material Safety Data Sheets or SDSs) to communicate the hazards of hazardous chemical products. As of June 1, 2015, the HCS will require new SDSs to be in 16-section uniform format that includes section numbers, headings, and associated information under the headings below: Employers must ensure that SDSs are readily accessible to employees Appendix D of 1910.1200 offers a detailed description of SDS contents.

Section 1:

Identification includes product identifier; manufacturer or distributor name, address, phone number; emergency phone number; recommended use; restrictions on use. This section identifies the chemical on the SDS as well as the recommended uses. It also provides the essential contact information from the supplier. The required information consists of:

• Product identifier used on the label and any other common names or synonyms by which the substance is known.

• Name, address, phone number of the manufacturer, importer, or other responsible party, and emergency phone number.

• Recommended use of the chemical (e.g., a brief description of what it actually does, such as flame retardant) and any restrictions on use (including recommendations given by the supplier).

Section 2:

Hazard(s) identification includes all hazards regarding the chemical; required label elements. This section identifies the hazards of the chemical presented on the SDS and the appropriate warning information associated with those hazards. The required information consists of:

• The hazard classification of the chemical (e.g., flammable liquid, category1).

• Signal word.

• Hazard statement(s).

• Pictograms (the pictograms or hazard symbols may be presented as graphical reproductions of the symbols in black and white or be a description of the name of the symbol (e.g., skull and crossbones, flame).

• Precautionary statement(s).

• Description of any hazards not otherwise classified.

• For a mixture that contains an ingredient(s) with unknown toxicity, a statement describing how much (percentage) of the mixture consists of ingredient(s) with unknown acute toxicity. Please note that this is a total percentage of the mixture and not tied to the individual ingredient(s).

Section 3:

Composition/information on ingredients includes information on chemical ingredients; trade secret claims.

This section identifies the ingredient(s) contained in the product indicated on the SDS, including impurities and stabilizing additives. This section includes information on substances, mixtures, and all chemicals where a trade secret is claimed. The required information consists of:

Substances

• Chemical name.

• Common name and synonyms.

• Chemical Abstracts Service (CAS) number and other unique identifiers.

• Impurities and stabilizing additives, which are themselves classified and which contribute to the classification of the chemical.

Mixtures

• Same information required for substances.

• The chemical name and concentration (i.e., exact percentage) of all ingredients which are classified as health hazards and are:

§ Present above their cut-off/concentration limits or

§ Present a health risk below the cut-off/concentration limits.

• The concentration (exact percentages) of each ingredient must be specified except concentration ranges may be used in the following situations:

§ A trade secret claim is made,

§ There is batch-to-batch variation, or

§ The SDS is used for a group of substantially similar mixture

§ Chemicals where a trade secret is claimed

• A statement that the specific chemical identity and/or exact percentage (concentration) of composition has been withheld as a trade secret is required.

Section 4:

First-aid measures include important symptoms/ effects, acute, delayed; required treatment. This section describes the initial care that should be given by untrained responders to an individual who has been exposed to the chemical. The required information consists of:

• Necessary first-aid instructions by relevant routes of exposure (inhalation, skin and eye contact, and ingestion).

• Description of the most important symptoms or effects, and any symptoms that are acute or delayed.

• Recommendations for immediate medical care and special treatment needed, when necessary.

Section 5:

Fire-fighting measures lists suitable extinguishing techniques, equipment; chemical hazards from fire. This section provides recommendations for fighting a fire caused by the chemical. The required information consists of:

• Recommendations of suitable extinguishing equipment, and information about extinguishing equipment that is not appropriate for a particular situation.

• Advice on specific hazards that develop from the chemical during the fire, such as any hazardous combustion products created when the chemical burns.

• Recommendations on special protective equipment or precautions for firefighters.

Section 6:

Accidental release measures list emergency procedures; protective equipment; proper methods of containment and cleanup. This section provides recommendations on the appropriate response to spills, leaks, or releases, including containment and cleanup practices to prevent or minimize exposure to people, properties, or the environment. It may also include recommendations distinguishing between responses for large and small spills where the spill volume has a significant impact on the hazard. The required information may consist of recommendations for:

• Use of personal precautions (such as removal of ignition sources or providing sufficient ventilation) and protective equipment to prevent the contamination of skin, eyes, and clothing.

• Emergency procedures, including instructions for evacuations, consulting experts when needed, and appropriate protective clothing.

• Methods and materials used for containment (e.g., covering the drains and capping procedures).

• Cleanup procedures (e.g., appropriate techniques for neutralization, decontamination, cleaning or vacuuming; adsorbent materials; and/or equipment required for containment/clean up).

Section 7:

Handling and storage lists precautions for safe handling and storage, including incompatibilities. This section provides guidance on the safe handling practices and conditions for safe storage of chemicals. The required information consists of:

• Precautions for safe handling, including recommendations for handling incompatible chemicals, minimizing the release of the chemical into the environment, and providing advice on general hygiene practices (e.g., eating, drinking, and smoking in work areas is prohibited).

• Recommendations on the conditions for safe storage, including any incompatibilities. Provide advice on specific storage requirements (e.g., ventilation requirements).

Section 8:

Exposure controls/personal protection lists OSHA’s Permissible Exposure Limits (PELs); Threshold Limit Values (TLVs); appropriate engineering controls; personal protective equipment (PPE). This section indicates the exposure limits, engineering controls, and personal protective measures that can be used to minimize worker exposure. The required information consists of:

• OSHA Permissible Exposure Limits (PELs), American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Values (TLVs), and any other exposure limit used or recommended by the chemical manufacturer, importer, or employer preparing the safety data sheet, where available.

• Appropriate engineering controls (e.g., use local exhaust ventilation, or use only in an enclosed system).

• Recommendations for personal protective measures to prevent illness or injury from exposure to chemicals, such as personal protective equipment (PPE) (e.g., appropriate types of eye, face, skin or respiratory protection needed based on hazards and potential exposure).

• Any special requirements for PPE, protective clothing or respirators (e.g., type of glove material, such as PVC or nitrile rubber gloves; and breakthrough time of the glove material).

Section 9:

Physical and chemical properties list the chemical’s characteristics. This section identifies physical and chemical properties associated with the substance or mixture. The minimum required information consists of:

• Appearance (physical state, color, etc.);

• Upper/lower flammability or explosive limits;

• Odor;

• Odor threshold;

• Vapor density;

• pH;

• Relative density;

• Melting point/freezing point;

• Initial boiling point and boiling range;

• Flash point;

• Evaporation rate;

• Flammability (solid, gas);

• Vapor pressure;

• Solubility(ies);

• Partition coefficient: n-octanol/water;

• Auto-ignition temperature;

• Decomposition.

The SDS may not contain every item on the above list because information may not be relevant or is not available. When this occurs, a notation to that effect must be made for that chemical property. Manufacturers may also add other relevant properties, such as the dust deflagration index (Kst) for combustible dust, used to evaluate a dust’s explosive potential.

Section 10:

Stability and reactivity lists chemical stability and possibility of hazardous reactions. This section describes the reactivity hazards of the chemical and the chemical stability information. This section is broken into three parts: reactivity, chemical stability, and other. The required information consists of:

Reactivity

• Description of the specific test data for the chemical(s). This data can be for a class or family of the chemical if such data adequately represent the anticipated hazard of the chemical(s), where available.

Chemical stability

• Indication of whether the chemical is stable or unstable under normal ambient temperature and conditions while in storage and being handled.

• Description of any stabilizers that may be needed to maintain chemical stability.

• Indication of any safety issues that may arise should the product change in physical appearance.

Other

• Indication of the possibility of hazardous reactions, including a statement whether the chemical will react or polymerize, which could release excess pressure or heat, or create other hazardous conditions. Also, a description of the conditions under which hazardous reactions may occur.

• List of all conditions that should be avoided (e.g., static discharge, shock, vibrations, or environmental conditions that may lead to hazardous conditions).

• List of all classes of incompatible materials (e.g., classes of chemicals or specific substances) with which the chemical could react to produce a hazardous situation.

• List of any known or anticipated hazardous decomposition products that could be produced because of use, storage, or heating. (Hazardous combustion products should also be included in Section 5 (Fire-Fighting Measures) of the SDS.)

Section 11:

Toxicological information includes routes of exposure; related symptoms, acute and chronic effects; numerical measures of toxicity. This section identifies toxicological and health effects information or indicates that such data are not available. The required information consists of:

• Information on the likely routes of exposure (inhalation, ingestion, skin and eye contact). The SDS should indicate if the information is unknown.

• Description of the delayed, immediate, or chronic effects from short- and long-term exposure.

• The numerical measures of toxicity (e.g., acute toxicity estimates such as the LD50 (median lethal dose)) - the estimated amount [of a substance] expected to kill 50% of test animals in a single dose.

• Description of the symptoms. This description includes the symptoms associated with exposure to the chemical including symptoms from the lowest to the most severe exposure.

• Indication of whether the chemical is listed in the National Toxicology Program (NTP) Report on Carcinogens (latest edition) or has been found to be a potential carcinogen in the International Agency for Research on Cancer (IARC) Monographs (latest editions) or found to be a potential carcinogen by OSHA

Section 12:

Ecological information. This section provides information to evaluate the environmental impact of the chemical(s) if it were released to the environment.

Section 13:

Disposal considerations. This section provides guidance on proper disposal practices, recycling or reclamation of the chemical(s) or its container, and safe handling practices. To minimize exposure, this section should also refer the reader to Section 8 (Exposure Controls/Personal Protection) of the SDS.

Section 14:

Transport information. This section provides guidance on classification information for shipping and transporting of hazardous chemical(s) by road, air, rail, or sea.

Section 15:

Regulatory information. This section identifies the safety, health, and environmental regulations specific for the product that is not indicated anywhere else on the SDS.

The information may include:

• Any national and/or regional regulatory information of the chemical or mixtures (including any OSHA, Department of Transportation, Environmental Protection Agency, or Consumer Product Safety Commission regulations).

Section 16:

Other information, includes the date of preparation or last revision.

This section indicates when the SDS was prepared or when the last known revision was made. The SDS may also state where the changes have been made to the previous version. You may wish to contact the supplier for an explanation of the changes. Other useful information also may be included here.