PVDF (PVF2)

CONTROL OF SUBSTANCES HAZARDOUS TO HEALTH REGULATIONS (COSHH)

 

Organic Coatings – PVDF

Specification:            

Hot dipped galvanised steel or Aluzinc, coated with primer, backing coat and a fluorocarbon top coat

Composition:

  • Metal Plating: Zinc with a small amount of lead (galvanised) or Zinc, Aluminium and Silicone (Aluzinc)
  • Primer: Epoxide and Strontium Chromate
  • Top Coat: Fluorocarbon
  • Backing Coat: Epoxide

Hazards

PVF2 compositions under normal conditions of storage and handling (shearing, bending, pressing) are not toxic or harmful. When handling the product there is a risk of laceration of the skin. While grinding into the primer coat, the dust will contain Strontium Chromate which is harmful by inhalation, therefore appropriate respiratory equipment should be used. When subjected to elevated temperatures, e.g. during welding, flame cutting or in the case of fire, there will be irritating and toxic fumes. The principle mode of entry in the body of these fumes is by inhalation, and this should be prevented. The fumes will contain; Oxides of Iron, Zinc, Aluminium (if Aluzinc substrate), Oxides of Iron and Zinc (if galvanised substrate), Hydrogen Fluoride and Carbon Monoxide. For full list refer to the table on next page.

Precautionary and Protective Measures

In the event of fire, appropriate respiratory protective equipment should be used by fire fighters. Protective clothing and gloves should be worn to prevent laceration of the skin. Consideration should be given to wearing eye protection, e.g. goggles, in certain circumstances.

First Aid;

  • Eye contact:    Bathe copiously with clean fresh water for at least ten minutes, holding eyelids apart.
  • Skin contact:   Wash skin thoroughly with soap and water or use a proprietary skin cleaner.

To ensure the Occupational Exposure Limits (OEL’s), set out on the table overleaf, are not exceeded when fume or dust is generated, provide adequate ventilation. If necessary use local fume extraction or supply appropriate respiratory protective equipment to those exposed to the fumes.

Occupational Exposure Limits 8 hour TWA (*)     15 minute
Iron Oxide fume 5.0 mg/m³ 10.0 mg/m³
Zinc Oxide fume 5.0 mg/m³ 10.0 mg/m³
Aluminium, metal or oxides

10.0 mg/m³ (Total Inhalable Dust

5.0 mg/m³ (Respirable Dust)

Chromium metal and compounds 0.5 mg/m³
Carbon Monoxide 50.0 ppm 300.0 ppm
Hydrgen fluoride 3.0 ppm

(*) Time weighted average over eight hours.

Refer to the current edition of the HSE Guidance EH40 (Occupational Exposure Limits) for up to date information.

You are requested to take such steps as are necessary to ensure that the relevant information is made available to all those persons involved with the use of these products

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