Poison Warning Signs

By
Anne Marie Helmenstine, Ph.D.
Anne Marie Helmenstine, Ph.D.
Chemistry Expert
  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College
Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.
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Updated on November 05, 2019

 Poison warning signs indicate a specific type of hazard, typically associated with eating or drinking a chemical. This is a collection of free downloadable and printable poison warning signs and symbols.

Mr Yuk

Mr. Yuk means no!
Mr. Yuk means no!. Children's Hospital of Pittsburgh

Mr. Yuk is a sign intended to warn children of poisons.

Toxic Chemical Sign

Toxic Chemical Sign
Toxic Chemical Sign. Yves Guillou, openclipart.org

One classic symbol for a toxic chemical is the skull and crossbones. It is usually placed on an orange background.

Toxic Sign

This is the hazard symbol for toxic substances.
This is the hazard symbol for toxic substances. European Chemicals Bureau

Harmful or Irritant Sign

This is the hazard symbol for an irritant or the general symbol for a potentially harmful chemical.
This is the hazard symbol for an irritant or the general symbol for a potentially harmful chemical. European Chemicals Bureau

An irritant is indicated by a simple "X", usually on an orange background.

Toxic Chemical Symbol

This symbol is for a material with 'other toxic effects'.
This symbol is intended to warn of a WHMIS Class D-2 hazardous material, which is a material causing other toxic effects than those indicated by other signs. Silsor, Wikipedia Commons

 "T" stands for toxic! If you see this warning, avoid ingestion or splashes.

Skull and Crossbones

Skull and Crossbones
The skull and crossbones is used to indicate the presence of a toxic or poisonous material. Silsor, Wikipedia Commons

Do Not Eat or Drink Sign

This is the prohibition sign for No Eating or Drinking.
This is the prohibition sign for No Eating or Drinking. Torsten Henning

 If you don't want someone to do something, draw a picture of the activity and cross it out with a line. This is a common warning sign in laboratories.

Carcinogen Hazard Symbol

UN symbol for carcinogens and mutagens.
This is the UN's Globally Harmonized System sign for carcinogens, mutagens, teratogens, respiratory sensitizers and substances with target organ toxicity. United Nations

A carcinogen is a substance that causes cancer. The warning sign sort of looks like lung cancer.

Poison Sign

Use this sign to indicate the presence of poisons.
Use this sign to indicate the presence of poisons. W!B:, Wikipedia Commons

Toxic Materials Sign

Toxic Materials Sign
Toxic Materials Sign. Yves Guillou, openclipart.org
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Helmenstine, Anne Marie, Ph.D. "Poison Warning Signs." ThoughtCo, Aug. 25, 2020, thoughtco.com/poison-warning-signs-gallery-4123092. Helmenstine, Anne Marie, Ph.D. (2020, August 25). Poison Warning Signs. Retrieved from https://www.thoughtco.com/poison-warning-signs-gallery-4123092 Helmenstine, Anne Marie, Ph.D. "Poison Warning Signs." ThoughtCo. https://www.thoughtco.com/poison-warning-signs-gallery-4123092 (accessed June 10, 2023).