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HAZCHEM CODIFICATION
HAZCHEM Code is based on pictorial representations consist of a
diamond, as shown in the figure, divided into 4 parts. These
parts, starting from left block (in clockwise direction), represent
Health Hazard, Flammability Hazard, Reactivity Hazard and
Space for additional information such as water reactivity,
oxidant and radiation hazard. The colour codes for these
hazards are : blue for health, red for flammability, yellow for
reactivity and colourless for additional information. The
intensity of hazard is grouped into five classes with numerical
indications as 0, 1, 2, 3 & 4 in the ascending order of hazard
intensity. In the following lines, these hazard intensities are
explained, with the numeral on the left indicating the hazard
intensity.
HAZCHEM CODE
Flammability
(Red)
Health
(Blue)
Reactivity
(Yellow)
W
OXY
W : Indicates possible hazard in
use of water.
OXY: Indicates oxidizing chemicals.

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Hazchem codification

  • 1. HAZCHEM CODIFICATION HAZCHEM Code is based on pictorial representations consist of a diamond, as shown in the figure, divided into 4 parts. These parts, starting from left block (in clockwise direction), represent Health Hazard, Flammability Hazard, Reactivity Hazard and Space for additional information such as water reactivity, oxidant and radiation hazard. The colour codes for these hazards are : blue for health, red for flammability, yellow for reactivity and colourless for additional information. The intensity of hazard is grouped into five classes with numerical indications as 0, 1, 2, 3 & 4 in the ascending order of hazard intensity. In the following lines, these hazard intensities are explained, with the numeral on the left indicating the hazard intensity.
  • 2. HAZCHEM CODE Flammability (Red) Health (Blue) Reactivity (Yellow) W OXY W : Indicates possible hazard in use of water. OXY: Indicates oxidizing chemicals.