Hydrocarbons & Aspiration Hazard H304

Hydrocarbons & Aspiration Hazard H304

How to manage Aspiration Hazard on New Formpak

The criteria for a substance meeting the Aspiration hazard criteria (Aspiration Hazard Category 1 and carrying H304) can be summarised as those substances:

  1. known to cause aspiration toxicity hazards based on evidence
  2. which are hydrocarbons with kinematic viscosity less than or equal to 20.5mm2/s at 40 degrees C.

Regarding the viscosity quoted, this is quite thick, so practically speaking, most hydrocarbons would be classified with Aspiration Hazard Category 1. Mixtures containing 10% or more hydrocarbons must also be classified in this way.
There are some areas where Aspiration hazard becomes tricky to manage. For example, some materials contribute to H304 but are not H304 themselves (too viscous or even solid). Examples are Patchouli and Camphene. Some complex raw materials have a hydrocarbon % reported which cannot be arrived at from the components declared in the published labelling manual (this is fairly common).

Brief Description of Set up on Formpak:

To every simple raw material which meets the criteria of Aspiration hazard due to being a hydrocarbon, add the hazard AH 1 = Yes (In GHS Hazards Property Group). When you ‘Calculate Now’ you will see HC% is calculated as 100%.

Complex Raw Materials will get a hazard calculation based on the simple materials within them. If there is 10% or more AH 1 components, then AH 1 and a HC% is attributed. However, if the aspiration hazard is not appropriate because the product is solid or very viscous, then it’s possible to manually alter. Follow the usual method to do this.


Last updated Apr 2018
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