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Chemical Door Signage

Chemical hazard signage should be included in all CH plans for affixation to sanitation rooms and pH buffer rooms. Below is the rating explanation guide:

Health Hazard Flammability Hazard Instability Hazard
4 = Can be lethal 4 = Below 73 degrees F 4 = May explode at nominal temperatures and pressures
3 = Can cause serious or permanent injury 3 = Above 73 degrees, Below 100 degrees F 3 = May explode at high temperature or shock
2 = Can cause temporary incapacitation or residual injury 2 = Above 100 degrees F, Below 200 degrees F 2 = Violent chemical change at high temperatures or pressures
1 = Can cause significant irritation 1 = Above 200 degrees F 1 = Normally stable.  High temperatures make unstable
0 = No hazard 0 = Will not burn 0 = Stable
  • Muriatic Acid 3-0-0
  • Carbon Dioxide Liquefied 3-0-0
  • Calcium Hypochlorite (Pulsar or Accu-Tab) 3-0-1
  • Sodium Hypochlorite (Liquid Chlorine) 2-0-1
  • Potassium Monopersulfate 2-0-1

The contractor should be required to confirm signage with local fire marshal and/or building codes prior to installation.

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