SDS Safety Symbols

What color is the health hazard block?

Blue

What color is the flammability hazard block?

Red

What color is the instability hazard block?

Yellow

What color is the special hazard block?

White

What does 4 mean in the health hazard block?

Can be lethal

What does 3 mean in the health hazard block?

Can cause serious or permanent injury

What does 2 mean in the health hazard block?

Can cause temporary incapacitation or residual injury

What does 1 mean in the health block?

Can cause significant irritation

What does 0 mean in the health block?

No hazard

What does OX mean in the special hazard block?

Oxidizing

What does SA mean in the special hazard block?

Simple asphyxiants

What does W mean in the special hazard block?

Reacts violently or explosively with water

What does 4 mean in the flammability hazard block?

Will vaporize and readily burn at normal temperatures

What does 3 mean in the flammability hazard block?

Can be ignited under almost all ambient temperatures

What does 2 mean in the flammability hazard block?

Must be heated or high ambient temperature to burn

What does 1 mean in the flammability hazard block?

Must be preheated

What does 0 mean in the flammability hazard block?

Will not burn

What does 4 mean in the instability hazard block?

May explode at normal temperatures and pressures

What does 3 mean in the instability hazard block?

May explode at high temperature or shock

What does 2 mean in the instability hazard block?

Violent chemical changes at high temperatures or pressures

What does 1 mean in the instability hazard block?

Normally stable. High temperatures make unstable

What does 0 mean in the instability hazard block?

Stable

What does this mean?

Health hazard

• Carcinogen

• Mutagenicity

• Reproductive toxicity

• Respiratory sensitizer

• Target organ toxicity

• Aspiration toxicity

What does this mean?

• Flammables

• Pyrophorics

• Self heating

• Emits flammable gas

• Self reactives

• Organic peroxides

What does this mean?

• Irritant

• Skin sensitizer

• Acute toxicity (harmful)

• Narcotic effects

• Respiratory tract irritant

• Hazardous to ozone layer

What does this mean?

Gases under pressure

What does this mean?

• Skin corrosion/burns

• Eye damage

• Corrosive to metals

What does this mean?

• Explosives

• Self reactives

• Organic peroxides

What does this mean?

Oxidizer

What does this mean?

Aquatic toxicity

What does this mean?

Acute toxicity (fatal or toxic)