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Carbon nanotube and nanofiber dust

Free, airborne carbon nanotube and carbon nanofiber particulate generated during manufacture or handling of engineered nanomaterials.

Airborne form

fiber

The form describes what is suspended in air at the point of exposure. A material can produce more than one form, such as dust during handling and fume during heating.

Health effects

pulmonary inflammationpulmonary fibrosispotential chronic respiratory effectsuncertain carcinogenicity

Evidence

NIOSH proposes a 1 µg/m³ elemental-carbon respirable 8-hour REL and expects it to reduce the risk of pulmonary inflammation and fibrosis.

Source: pdf ↗ · saved source
page 1 · Executive Summary · 1
The NIOSH REL is 1 μg/m³ elemental carbon as a respirable mass 8-hour time-weighted average (TWA) concentration. The NIOSH REL is expected to reduce the risk for pulmonary inflammation and fibrosis.

NIOSH warns that inhalation of CNT/F may cause harm and that understanding potential toxicity is important for worker exposure.

Source: html ↗ · saved source
Summary · 1
The properties that make them so promising may also have the potential to cause harm to people if inhaled. Understanding potential health effects, conducting field exposure studies, and developing good practices promotes safe handling and responsible development of products using these materials.

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