Workplace Chemical Register: What to Include

A workplace chemical register should identify every hazardous chemical product and every harmful substance generated by work, show where and how it is used, link to the current safety data sheet and risk assessment, and make missing information or uncontrolled use visible. It is a working control document, not simply a folder of supplier PDFs.

The short answer

Record the product or process name, product identifier, supplier, work area, quantity and storage location, use and users, hazard classification, current SDS reference, related risk assessment, required controls, emergency information, responsible owner and review status. Include dusts, fumes, vapours, mists, gases and waste generated by work, even when there is no purchased container or supplier SDS.

What should the chemical register record?

The register should let a competent person understand what is present, where it is, who may be exposed and which control documents apply. A practical entry normally includes:

Product, substance or process name, written clearly enough to match the label and work activity
Product identifier used on the safety data sheet, plus manufacturer or supplier
Chemical name and CAS number where these are relevant and reliably available
Site, work area and storage location, including mobile stores, vehicles and contractor-controlled areas
Typical and maximum quantity held, with container size where that affects storage or emergency planning
Task or process in which it is used or generated, including non-routine work
People or roles who use it or may be exposed, including cleaners, maintenance staff, contractors and others nearby
Hazard classification, pictograms, signal word and key hazard statements from the current label or SDS
Routes of exposure that matter for the task: inhalation, skin or eye contact, ingestion or injection
SDS issue or revision date, language, source and a direct reference to the current controlled copy
Linked chemical, COSHH or task risk assessment and its review date
Required engineering controls, work practices and personal protective equipment, or a reference to the approved procedure
Storage segregation or incompatibility information and any special temperature, ventilation or security requirement
Emergency, spill, first-aid and fire response reference, including how workers obtain it during the shift
Waste or disposal route where residues, empty containers or contaminated materials need control
Record owner, approval status, date last verified and any open action

Do not turn the register into a second safety data sheet. It should capture the operational facts needed to control the substance and point to the detailed source. Copying every SDS section into a spreadsheet creates more information to maintain and more opportunities for versions to diverge.

What belongs on the register?

Start with purchased products, then walk the workplace and follow the work. Purchase records alone will miss substances brought in locally, samples, maintenance products, contractor chemicals and materials stored in vans or temporary areas.

Also include harmful substances produced by the activity. HSA and HSE guidance both tell employers to consider dusts, fumes, vapours, mists and gases generated by work. Examples include welding fume, wood or silica dust, exhaust, cleaning aerosols and process residues. These may not have a supplier label or SDS, but the exposure still needs to be identified and assessed.

Unknown containers and legacy stock should not be given a vague entry and left in place indefinitely. Isolate them from use, prevent access, establish the identity where this can be done safely and arrange competent disposal when it cannot. Never smell, mix or decant an unknown substance to try to identify it.

Include products used only occasionally. A drain cleaner, descaler, two-part adhesive or contractor coating may create higher risk precisely because workers see it less often and are less familiar with the controls.

A current reminder from Ireland

In a 2026 safety alert, the HSA described serious incidents in which bleach, descaler and corrosive dishwasher detergent were mistaken for drinks. It told employers to identify workplace chemicals, assess handling and storage, keep them in suitable labelled containers, provide SDS access and plan the emergency response. A current register should help expose unsecured stock, unsuitable decanting and missing controls before an incident.

How do the register, SDS and risk assessment differ?

The register answers what is present, where it is used or generated and which records apply. The safety data sheet is supplier information about the product's hazards, handling, storage, exposure controls and emergency measures. The risk assessment applies that information to the actual people, task, quantity, duration, environment and controls in the workplace.

One does not replace the others. HSE states plainly that an SDS is not a COSHH risk assessment. A supplier cannot know whether a cleaner will be sprayed in a small unventilated room, diluted through a closed system or used briefly outdoors. The same product can present different risks in those situations.

The register should link each relevant use to the correct assessment. If the same chemical is used for different tasks, locations or concentrations, one generic assessment may not be enough. Conversely, a task assessment may cover several chemicals or process-generated substances where their combined exposure and controls need to be considered together.

Do not rely only on a trade name. The product identifier in the register should match the label and current SDS so workers and emergency responders do not open the wrong document. Where local names such as “floor cleaner” are unavoidable in daily work, keep the exact product identifier alongside them.

What should happen when an SDS is missing or outdated?

Do not mark “SDS missing” and allow routine use to continue without a decision. Contact the supplier, check the product label and determine whether the substance can be used safely under the approved process while the information gap is resolved. Where the hazards and controls cannot be established, stop or restrict use and obtain competent advice.

Track the SDS revision date rather than treating any PDF as current forever. Review the register when a supplier sends a revised sheet, the formulation or classification changes, or new hazard information becomes available. Compare the update with the risk assessment, storage arrangements, labels, emergency plan and training; replacing the file alone may not complete the change.

Electronic access is useful only if workers can obtain the information when it is needed. Test access at the point of use and during foreseeable emergencies, including loss of power, network or login access where relevant. In the US, OSHA expressly permits electronic SDS access provided there are no barriers to immediate employee access in each workplace.

How should a multi-site chemical register work?

Use a controlled product library for common information, but maintain a site-level record of what is actually present. Head office may approve a detergent and its current SDS; the local site must still record whether it holds the product, where it is stored, how it is used and which local assessment and emergency arrangements apply.

A practical multi-site model separates:

Product master: product identifier, supplier, classification, current SDS and approved uses.
Site inventory: presence, quantity, storage area, task, local owner and last verification.
Risk and control record: exposure assessment, controls, training, health surveillance or monitoring where required, and emergency arrangements.
Change and action history: new product approval, substitutions, SDS updates, missing information and verified closure.

This structure makes central updates possible without pretending every location is identical. It also lets safety leaders identify unapproved products, sites using an old SDS, incompatible materials stored together and high-risk substances appearing outside the expected work area.

When should the register be reviewed?

Set a planned verification frequency based on the risk and rate of change, then add event-driven reviews. Review the relevant entry and assessment when:

a new product, supplier, process or work area is introduced;
a chemical is substituted, reformulated, decanted or used at a different concentration;
a new or revised SDS, label, exposure limit or regulator instruction is received;
storage quantities or locations change;
new equipment, ventilation or work practices alter exposure;
a spill, exposure, illness, near miss or emergency occurs;
monitoring, health surveillance or inspection indicates that controls may not be effective; or
the product is withdrawn, disposed of or no longer approved.

Keep retired records where they support exposure history, health surveillance, incident investigation or another legal retention duty. “Not currently used” is not the same as “never present”, especially where long-term occupational disease may be relevant.

What do the Ireland, UK and US rules say?

Ireland: employers must assess risks from chemical agents under the Safety, Health and Welfare at Work Act and Chemical Agents Regulations, with relevant assessments forming part of the safety statement. HSA guidance recommends making an inventory before the assessment. Its 2025 Chemical Inventory Template supports small and medium-sized businesses, but the HSA states that it is not an approved or statutory form; compliance depends on the quality of the actual inventory and assessment.

Great Britain: COSHH requires employers to assess and control exposure to substances hazardous to health. HSE guidance says to identify harmful products from labels and SDSs and to include substances generated by processes. The SDS helps with the assessment but is not the assessment. Northern Ireland has its own COSHH regime and HSENI enforcement arrangements, so organisations there should check the applicable local guidance.

United States: OSHA's Hazard Communication Standard requires a written program that includes a list of hazardous chemicals known to be present, using the product identifier referenced on the appropriate SDS. It also requires workplace labels, SDS access and employee information and training. The OSHA list is a legal minimum for covered workplaces; adding location, use, quantity, assessment and control fields can make it more useful operationally. State-plan rules and substance-specific standards may add requirements.

The legal scope is not identical across these jurisdictions. A single global template can provide a common operational baseline, but it should retain the local classification, exposure limits, language, reporting and record-keeping requirements that apply to each site.

Where Fit2Trade fits

Fit2Trade Ensure can help organisations keep risk assessments, actions and evidence connected across sites. A digital register supports the process, but competent people must still identify the substances present, assess real exposure and decide whether the controls are adequate. Explore Fit2Trade Ensure or talk to the team.

Official sources

This is general operational information for workplaces in Ireland, Great Britain and the United States. Northern Ireland has separate regulations, and US state-plan or substance-specific requirements may apply. Check the law, regulator guidance and competent advice relevant to each site and activity.

What Should a Workplace Chemical Register Contain?