File:Fse-hydrogen-cyanide-v3.svg

Fse-hydrogen-cyanide-v3.svg (SVG file, nominally 900 × 600 pixels, file size: 10 KB)

Summary

Summed fraction of an incapacitating dose for 15 minutes at 90 ppm followed by 2 minutes at 180 ppm of hydrogen cyanide. Based on Purser (2002), p. 2-105.

Original vector illustration for Hydrogen cyanide, level 2 Intermediate.

Source basis: Purser (2002), p. 2-105 (example; handbook total 1.111, stated incapacitation between 17 and 18 min).
Alt text: Step chart: the summed dose fraction rises slowly to 0.54 over 15 minutes at 90 ppm, then jumps past 1 within two minutes at 180 ppm.

Licensing

New drawing by Fire Safety Academy. © Fire Safety Academy.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:11, 2 November 2026		900 × 600 (10 KB)	Lisa (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Hydrogen cyanide

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Short title	Summed fraction of an incapacitating dose for 15 minutes at 90 ppm followed by 2 minutes at 180 ppm of hydrogen cyanide. Based on Purser (2002), p. 2-105.
Image title	Step chart: the summed dose fraction rises slowly to 0.54 over 15 minutes at 90 ppm, then jumps past 1 within two minutes at 180 ppm. Source basis: Purser (2002), p. 2-105 (example; handbook total 1.111, stated incapacitation between 17 and 18 min).
Width	900
Height	600