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.