Dispelling three common misconceptions about Safety Data Sheets.
OSHA's Hazard Communication Standard (HCS), 29 CFR 1910.1200, requires employers to have a Safety Data Sheet (SDS) for each hazardous chemical they use and to keep it readily accessible to employees during each work shift. It does not require an SDS for every product, a fixed replacement schedule, or 30-year storage of every sheet.
Getting those details right matters more than usual this year. OSHA's May 20, 2024 update to the HCS keeps the standard aligned with the United Nations Globally Harmonized System of Classification and Labelling of Chemicals (GHS), primarily Revision 7. Manufacturers, importers, and distributors evaluating substances had to comply by May 19, 2026, so suppliers should already be sending revised SDSs with your shipments. Employers have until November 20, 2026, to update any alternative workplace labeling, their written hazard communication program, and employee training for newly identified hazards in those substances. For mixtures, the dates are November 19, 2027, for suppliers and May 19, 2028, for employers. OSHA moved each date back four months in a final rule published January 15, 2026.
A little history keeps the terms straight. OSHA first issued the HCS in 1983, expanded it in 1987 to cover all employers with employees exposed to hazardous chemicals, and aligned it with the GHS in 2012. That 2012 revision replaced the Material Safety Data Sheet (MSDS) with the standardized 16-section SDS used today. The HCS came first; GHS alignment came decades later.
Each misconception below is paired with the regulatory text that corrects it, so you can check your own program against the source.
The requirement in 1910.1200(g)(1) is narrower. Employers must have an SDS for each hazardous chemical they use, meaning a chemical classified as a physical hazard, a health hazard, a simple asphyxiant, combustible dust, or a hazard not otherwise classified (HNOC). A product that meets none of those definitions does not require an SDS under the HCS, although many suppliers provide one anyway.
Paragraph (b)(6) then removes 12 categories from the standard entirely. The ones you are likely to run into include:
The consumer product exemption is a two-part test, and the burden is on you. Under (b)(6)(ix), a product defined as a consumer product under the Consumer Product Safety Act, or a hazardous substance under the Federal Hazardous Substances Act, is exempt only where the employer can show two things: it is used for the purpose the manufacturer or importer intended, and that use results in a duration and frequency of exposure no greater than consumers could reasonably experience.
In a July 8, 2004 letter of interpretation, OSHA treated office chemicals such as correction fluid, copier chemicals, and cleaning agents used in small quantities as exempt consumer products. The same letter said the HCS would apply to an employee hired to service the copier. Apply that logic to a retail bathroom cleaner: an office manager wiping down a restroom sink is using it like a consumer, while a custodian using it across a full shift, or a mechanic using it to degrease equipment parts, is not.
If you rely on the exemption, document which products you treat as exempt and why each use matches consumer duration and frequency. Many employers keep the SDS anyway, which takes the question off the table.
Some operations get partial coverage instead of an exemption. Where employees only handle chemicals in sealed containers that are not opened under normal conditions of use, such as warehousing, retail sales, and marine cargo handling, paragraph (b)(4) still requires you to keep the SDSs that arrive with shipments, obtain one as soon as possible if an employee requests it for a sealed container received without one, and keep them readily accessible during each work shift. Laboratories have a similar limited set of obligations under (b)(3). The HCS definition of "employee" also excludes workers, such as office staff, who encounter hazardous chemicals only in non-routine, isolated instances.
The HCS sets no expiration date for an SDS and no calendar-based replacement cycle. Updates are triggered by new information. Under (g)(5), the chemical manufacturer, importer, or employer preparing the SDS must add any significant new information about a chemical's hazards, or about ways to protect against them, within three months of becoming aware of it. Under (g)(6)(i) and (g)(7)(i), manufacturers, importers, and distributors must provide the updated SDS with the first shipment after the update.
Your obligation as the employer, under (g)(8), is to maintain copies of the required SDSs in the workplace. In practice, that means swapping in the revised version when it arrives and checking Section 16, which must show the date of preparation or last revision.
Expect more revisions than usual through 2027. The transition provision in (j)(4) lets manufacturers, importers, distributors, and employers comply with either the current standard or the pre-2024 version until the applicable compliance dates, so your library may hold a mix of older and updated SDSs for a while. Compare each revision with the version it replaces. A newly identified hazard on a revised SDS is what triggers the label, program, and training updates due by the employer deadlines above.
If you subscribe Materials to records in the EHS Insight SDS Community Library (available with the SDS Managed Service license), you receive updated versions as they become available, and previous versions remain accessible from the Materials list. Community SDSs are reviewed on a two-year cycle. That is a service cadence, not a regulatory interval, so compare an SDS's issue date with the manufacturer's current version whenever a product changes. Field employees can flag a missing or outdated SDS through the SDS Request workflow, which sends email notifications and tasks to your SDS coordinators.
The 30-year figure is real, but it comes from a different standard: Access to Employee Exposure and Medical Records, 29 CFR 1910.1020. That standard counts an SDS indicating that a material may pose a hazard to human health as an employee exposure record, and exposure records generally must be kept for at least 30 years.
Paragraph (d)(1)(ii)(B) then carves SDSs out. They need not be retained for any specified period, as long as some record of the substance's identity (chemical name if known), where it was used, and when it was used is kept for at least 30 years. A chemical inventory or similar record showing that information qualifies. Two limits apply: a footnote to the standard states that SDSs must still be kept for chemicals currently in use under the HCS, and a substance-specific OSHA standard can set a different retention period.
A related misreading is that the 30-year clock starts only after someone is hurt or becomes ill. It does not. Section 1910.1020 defines exposure as an employee being subjected to a toxic substance or harmful physical agent through any route of entry, and the definition includes past and potential (accidental or possible) exposure. It excludes only situations where the employer can show the substance is not used, handled, stored, generated, or present in any manner different from typical non-occupational situations.
OSHA's letters of interpretation read the retention rule the same way. In an April 1, 1999 letter, OSHA said the standard's applicability does not depend on a showing of any particular level of actual exposure, and that exposure records must be kept for exposures both above and below permissible limits. In an October 1, 1987 letter on superseded data sheets, OSHA said that when a product's formulation changes, the employer must keep both data sheets for at least 30 years, or keep a record identifying the substances used instead. Neither letter ties retention to an injury, illness, or incident.
When you retire a product, archive its last SDS or, at minimum, a record of the chemical name, the locations where it was used, and the date range. Section 1910.1020 does not dictate the format, as long as the information is preserved and retrievable.
In the EHS Insight Chemical Management module, the transaction-based Chemical Inventory form records purchases and usage as transactions for each location, and the Chemical Inventory Current Onsite report shows on-hand inventory by location as of a selected date. That history can supply the identity, location, and date details for your retained record. How long you keep it is a retention decision your written program should define.
Both halves are wrong. Paragraph (g)(8) explicitly permits electronic access and other alternatives to paper copies, as long as those options create no barriers to immediate employee access in each workplace.
OSHA reads "readily accessible" as immediate. In an October 13, 1998 letter of interpretation, OSHA said a two-hour gap between an employee's request and receipt of the information falls short. The same letter accepted telephone transmittal of hazard information only as a backup to a primary electronic system, and only if the SDS itself is provided as soon as possible after the request.
Barriers worth testing in your own system:
Employees who travel get one accommodation, with a condition. Under (g)(9), when employees work at more than one geographical location during a shift, SDSs may be kept at the primary workplace facility, but you must ensure employees can immediately obtain the required information in an emergency.
Contractors are part of the access question. In a multi-employer workplace, (e)(2)(i) requires your written program to include the methods you will use to give other employers on-site access to SDSs for each hazardous chemical their employees may be exposed to.
Your written program must also describe how you will meet the SDS requirements in paragraph (g), so document both the primary access method and the backup. Common backups include regularly updated paper copies in work areas and company vehicles, devices with locally stored copies, and, as a backup only, a telephone line paired with prompt delivery of the SDS.
EHS Insight supports both the primary path and the backup. Employees view SDSs by location or across the full Company Library on the Safety Data Sheet Dashboard. After an administrator sets up the sync subscription, users can sync the Company Library to a mobile or Windows device for offline access when internet service is limited or unavailable. Anonymous QR codes and links, generated by location or company-wide, let field personnel, contractors, and emergency responders open the relevant SDS list from a phone without logging in. See the EHS Insight mobile app for field access.
Responsibility for SDS content sits with whoever prepares it. Paragraph (d)(1) states that employers are not required to classify chemicals unless they choose not to rely on the classification performed by the chemical manufacturer or importer, and (g)(5) puts the accuracy obligation on the manufacturer, importer, or employer preparing the SDS.
Two employer obligations do apply to the SDSs you receive:
If you prepare SDSs yourself, such as for a mixture you produce or a chemical you choose to classify independently, you take on the preparer's obligations, including the three-month update requirement.
A short receiving check is still good practice: confirm each SDS is in English, includes all 16 sections in order, matches the product identifier on the label, and shows a revision date that lines up with what the supplier currently publishes.
In the Chemical Management module, the Require SDS Attachment setting requires every material in the Material List to have an attached SDS, which keeps your chemical list and SDS library tied together. With the SDS Managed Service license, SDS Copilot lets SDS coordinators upload an SDS PDF, extract product metadata, and search the Community Library for a matching record by product name and manufacturer before creating a new one.
Paragraph (g)(2) lists all 16 sections in order, and an SDS must include every heading to be consistent with the GHS. A note to that paragraph, however, states that OSHA will not enforce the information requirements in sections 12 through 15 (ecological information, disposal considerations, transport information, and regulatory information), because those areas fall outside OSHA's jurisdiction. OSHA's Hazard Communication Safety Data Sheets QuickCard (OSHA 3493) makes the same point.
That does not make those sections disposable. Other agencies regulate disposal and transport, and your environmental and shipping staff may rely on that information. It does mean the OSHA-enforced content sits in sections 1 through 11 and Section 16, with Appendix D to 1910.1200 spelling out what each must contain.
Those sections are worth reading closely on revised SDSs. OSHA's 2024 QuickCard describes Section 2 as covering hazards from a change in the chemical's physical form and from chemical reaction products associated with known or reasonably anticipated uses, and Section 9 as including particle size. Section 8 lists OSHA permissible exposure limits (PELs), ACGIH Threshold Limit Values (TLVs), and other limits used or recommended by the preparer, where available. If a sub-heading has no relevant information, (g)(3) requires the preparer to mark it to show none was found, so a blank sub-heading is worth sending back to the supplier.
Telling employees where the binder or terminal is covers only the information piece. Under (h)(2)(iii), employees must be informed of the location and availability of the written program, the chemical list, and the SDSs. Training under (h)(3) goes further and must include, at a minimum:
OSHA has also stated in a letter of interpretation that HazCom training is not satisfied solely by giving employees written documentation.
The trigger is an event, not the calendar. Paragraph (h)(1) requires training at the time of initial assignment and whenever a new chemical hazard the employees have not been trained on is introduced into their work area. The HCS does not set an annual refresher requirement, although many employers schedule one as a program practice. The 2024 update adds a deadline-driven case: additional training on any newly identified hazards, due by the employer compliance dates.
The EHS Insight Training Management module lets you define Training Requirements, assign them by position, training group, or location with due dates and recurring schedules, and create One-Off Training Assignments for training outside the regular schedule, such as when a new chemical hazard enters a work area. Training Record forms document completions.
Use this list to pressure-test your program before the November 20, 2026 employer date for substances:
If you operate in a State Plan state, confirm your state's adopted version of the standard and its compliance dates, which can differ from federal OSHA's. For a broader view of which OSHA standards apply to your operation, see OSHA Rules and Regulations: What Every Safety Manager Needs to Know. For a worked example of reading a specific SDS, see the ethyl alcohol SDS guide.
No. Under 29 CFR 1910.1200(g)(1), you need an SDS for each hazardous chemical you use. Products covered by the exemptions in paragraph (b)(6), such as articles and consumer products used for their intended purpose with no more exposure than a consumer would have, do not require one.
Under 29 CFR 1910.1020(d)(1)(ii)(B), you do not have to keep the SDS itself for a set period once a chemical is out of use, as long as you keep a record of the chemical's identity, where it was used, and when it was used for at least 30 years. While a chemical is in use, the current SDS must be maintained in the workplace.
No. The Hazard Communication Standard sets no expiration date. The manufacturer, importer, or employer preparing the SDS must add significant new hazard information within three months of becoming aware of it, and suppliers must send the updated SDS with the first shipment after the update.
Yes. Paragraph (g)(8) permits electronic access as long as it creates no barriers to immediate employee access in each workplace. OSHA interprets readily accessible as immediate, so plan a backup for power outages, network outages, and areas without connectivity, and describe your access methods in your written hazard communication program.
No. Every SDS must include all 16 headings in order to be consistent with the GHS, but OSHA does not enforce the information requirements in sections 12 through 15 (ecological, disposal, transport, and regulatory information) because those areas fall under other agencies.
Employers must update any alternative workplace labeling, their written hazard communication program, and employee training for newly identified hazards by November 20, 2026, for substances and by May 19, 2028, for mixtures. OSHA extended both dates by four months in a final rule published January 15, 2026.
Give employees immediate access to current SDSs, in the plant or in the field, and keep a clear record of what changed and when. EHS Insight helps you centralize your SDS library, route missing-SDS requests to coordinators, and provide offline and QR-based access as part of your hazard communication program. Take the instant demo or start a free trial.
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