Detector tubes for n-hexane, measuring in excess of 100 ppm, are available commercially. It is not advisable to apply this standard to oils containing unknown concentrations and types of additive. Absorption by skin may readily exceed vapour inhalation exposure. Symptoms for skin absorption are the same as for inhalation. Contact with eyes and mucous membranes may also contribute to overall exposure and may also invalidate the exposure standard.
General exhaust is adequate under normal operating conditions.
Local exhaust ventilation may be required in special circumstances. Correct fit is essential to ensure adequate protection. Provide adequate ventilation in warehouses and enclosed storage areas. Avoid contact with eyes. Wear chemical protective gloves, eg.