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Queensland Health
Health Professionals > Endoscope Reprocessing

3.5c Risk Assessment

ORTHO-PHTHALALDEHYDE (OPA)

What are the health effects?

OPA is not classified as hazardous to health in accordance with ASCC criteria.

Swallowed

May irritate the tissues of the mouth, throat, oesophagus and digestive system. Symptoms of over exposure may include vomiting, diarrhoea and nausea.

Eye

Direct eye contact may cause stinging, excess tearing and redness. Advice should be sought from an ophthalmologist or optometrist regarding use of contact lenses.

Skin

Direct skin contact may cause stinging and mild irritation after prolonged exposure. Prolonged and repeated skin contact may cause dermatitis.

Inhaled

Inhaling mists and sprays may cause mild irritation of the nose, throat and respiratory system. Symptoms of overexposure are coughing and sneezing. Inhalation may aggravate pre-existing bronchitis and asthma conditions.

What level of exposure is hazardous?

No occupational exposure standards have been established for OPA.

How can exposure be monitored?

Monitoring is not practicable as there is no exposure standard.

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What control measures are recommended?

elimination - eliminate the use of the chemical

substitution - substitute the chemical with one less hazardous

isolation - isolate the chemical from the operator

engineering controls - e.g., install ventilation systems

administrative controls - those recommended for the use of OPA are:

PPE - recommended for use with OPA are:

Is health surveillance required?

OPA is not classified as a hazardous substance according to the ASCC criteria therefore health surveillance is not required.

What training is necessary?

All employees required to handle OPA should receive induction and ongoing training on its safe use. They should be fully trained in the nature and hazards of the product, as well as spill, leak and fire fighting responses.

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What do I do in case of a spill?

Small spills

Large spills

Part of the training provided to anyone working with OPA should include instructions on how to clean up a spill and in the use of the spill kit. Records should be kept of the details of staff induction and training.

A spill kit should contain:

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Last Updated: 10 April 2008
Last Reviewed: 10 April 2009