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COSHH Assessment — STIHL HP 2-Stroke Engine Oil (100 ml)

Ref Revision Issue Date Next Review Assessor Approved By
COSHH_22 2 1 June 2026 1 June 2027 Sean Ashton Aaron Mason, Director

Key references

Open Safety Data Sheet (supplier website)

Download this COSHH as a Word document

Van-pack inclusion

This substance is carried in the field van packs. The Van Packs operative-facing site holds a synchronised copy.

1. Product identification
Product name STIHL HP 2-Stroke Engine Oil (100 ml)
Supplier Andreas Stihl Ltd / CID Group (supplied unit)
Active ingredients / CAS Petroleum mineral oil lubricant base + proprietary performance additives
CAS: 64742-65-0 (solvent-refined heavy paraffinic oil) + others
Physical form Liquid
Appearance / odour Red-tinted oil, mild hydrocarbon odour
Use 2-stroke fuel mix additive (50:1 ratio) for petrol-powered Stihl tools (disc-cutters, saws, breakers)

2. Hazard classification

Overall classification: Aspiration Toxicity Cat 1, Aquatic Chronic 3

Signal word: Danger

Hazard statements (H-codes)

Code Statement
H304 May be fatal if swallowed and enters airways.
H412 Harmful to aquatic life with long lasting effects.

Precautionary statements (key P-codes)

Code Statement
P102 Keep out of reach of children.
P264 Wash thoroughly after handling.
P273 Avoid release to the environment.
P301+310 IF SWALLOWED: Immediately call a POISON CENTRE or doctor/physician.
P331 Do NOT induce vomiting.
P405 Store locked up.
P501 Dispose of contents/container to an authorised waste contractor in accordance with local regulations.

GHS pictograms

  • GHS08 — Health hazard (serious)

3. Persons at risk

  • Operatives using Stihl 2-stroke tools
  • Fuel-mixing personnel

4. Routes of exposure

  • Inhalation: Low — not volatile at ambient temperature
  • Skin contact: Repeated/prolonged contact may cause dermatitis
  • Eye contact: Mild irritation on direct contact
  • Ingestion: May be fatal if swallowed and enters airways (aspiration hazard)

5. Workplace exposure limits (HSE EH40/2005)

Substance 8-hr TWA 15-min STEL
Oil mist, mineral 5 mg/m³ 10 mg/m³

6. Control measures — hierarchy of controls

Elimination / substitution: Evaluated where practicable — see Section 12.

Engineering controls:

  • Mix fuel outdoors where possible
  • Use proprietary fuel-mixing bottle (pre-marked 50:1 graduations)
  • Drip tray for decanting

Administrative controls:

  • Mix only sufficient fuel for the day's work (do not store mixed fuel long-term)
  • Label all mixed fuel containers
  • Keep away from food/drink

Personal Protective Equipment (PPE):

  • Nitrile gloves
  • Safety glasses

7. Storage
Temperature Ambient
Location Dry store, away from food and drink
Avoid Direct heat, strong oxidisers, food/drink
Container Original 100 ml bottle — keep tightly closed

8. Emergency procedures

First aid

Route Action
Eyes Rinse with water for several minutes.
Skin Wash with soap and water.
Inhalation Move to fresh air.
Ingestion DO NOT induce vomiting (aspiration risk). Rinse mouth. Seek immediate medical attention — POISON CENTRE: 111 (NHS) or 999.

Spillage

Absorb with sand, vermiculite or proprietary oil absorbent. Dispose as hazardous waste. Do not release to drains or watercourses.

Fire

Combustible when heated. Use foam, dry powder or CO₂.

Emergency contacts

  • Emergency services: 999
  • NHS non-emergency: 111
  • AMWS supervisor: Jason May
  • HSQE support: Sean Ashton (Onyx Operations)

9. Waste disposal

Hazardous waste (EWC 13 02 05*). Dispose via authorised waste-oil contractor.

10. Risk rating

Before controls With controls
Moderate Low

Risk rating methodology: Severity × Likelihood = Risk (S × L = R). See POL_HSQE_21 — Risk Assessment for the full scoring matrix.

11. Training requirements

  • Fuel-mixing procedure
  • Spill response
  • Hand-arm vibration awareness (tool operation)

12. Monitoring and review

  • Weekly van-pack inspection
  • Annual COSHH review

13. References

Assessment approved by: Aaron Mason, Director · 1 June 2026

This assessment must be reviewed annually or when circumstances change — whichever is sooner.