COSHH Assessment Form

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COSHH Assessment Form Date:

Assessment Details

Procedure Title

Location(s)

Prepared By

Phone

Checked By

Phone

Hazardous Substances (include all byproducts)

💡 Tip: The PubChem lookup works best with CAS registry numbers (e.g. 67-64-1). If a name search returns no data or poor results, try entering the CAS number instead.

Hazardous Substance	CAS Number	Qty Used	Qty Handled	Concentration	Workplace Exposure Limit	Hazards (GHS / Annex 3)

Risk Questions

1. Can a less hazardous substance be used? Yes No
2. Can this procedure enhance hazards or create harmful by-products? Yes No
3. Is the substance a known mutagen, carcinogen, or teratogen? Yes No
4. Can this procedure cause build-up of pressure or an exothermic reaction? Yes No
5. Confirm materials are not on the prescribed list

Materials to be Retained

Materials	Hazards (if known)	Cleaning (reagents and materials)	Storage and Location

Procedure

Procedure steps (numbered, identify SOPs, RAs, operational controls and PPE for pertinent steps)

Relevant Literature (peer-reviewed references)

Waste Disposal

Chemicals and Quantity	Hazards	Containers Needed	Storage / Labelling

Emergency Procedures

Substance	Ingestion		Inhalation		Skin Contact		Eye Contact
Substance	Induce Vomiting	Medical Attention	Fresh Air	Medical Attention	Rinse w/ Water	Medical Attention	Rinse w/ Water	Medical Attention

Other emergency notes

Spillage Procedure

Small Scale Spillage

Large Spillage

Fire and Explosion Risk

Fire Risk?

Yes No

Explosion Risk?

Yes No

Toxic Fumes Risk?

Yes No

Steps taken to control risk (if Yes to any above)

Action to take in case of fire

Type of extinguisher

Export as

⚗ PubChem Hazard Lookup

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⚠ Data sourced from PubChem (NCBI/NIH) — free, public, no account required. GHS data is depositor-supplied and may vary by supplier/region. Always verify against your substance's official Safety Data Sheet (SDS) before use. UK WEL values are auto-filled from the built-in EH40 database where available — always verify against the current HSE EH40.

🔍 Quick CAS / Substance Lookup

EH40 WEL + PubChem GHS — reference only, does not modify the form

Enter a CAS number or name above and press Look up or Enter.

⚠ EH40 data: HSE EH40/2005 4th Ed. + WS1 2023 amendment. PubChem data: depositor-supplied GHS, may vary by supplier/region. Always verify against the current HSE EH40 and your substance SDS before use. Results are for reference only and are not written to the form.