What are signal words? Signal words are found on pesticide product labels, and they describe the acute (short-term) toxicity of the formulated pesticide product. The signal word can be either: DANGER, WARNING or CAUTION. Products with the DANGER signal word are the most toxic.
This means that the product is moderately toxic either orally, dermally, or through inhalation, or it causes moderate eye and skin irritation. AVISO, the Spanish word for WARNING, must also appear on the label. DANGER. This means that the product is highly toxic by at least one route of entry into the body.
If the pesticide can severely hurt your eyes or skin, the label will say something like “Corrosive, causes eye and skin damage.” If the pesticide can make you very sick, the label will have a skull- and-crossbones symbol and the word “POISON.”
There are only two words used as signal words, “Danger” and “Warning.” Within a specific hazard class, “Danger” is used for the more severe hazards and “Warning” is used for the less severe hazards. There will only be one signal word on the label no matter how many hazards a chemical may have.
What are Signal Words? Signal words are found on pesticide product labels, and they describe the acute (short-term) toxicity of the formulated pesticide product. The signal word can be ei- ther: DANGER, WARNING or CAUTION. Products with the DANGER signal word are the most toxic.
Review the concept of a signal word: a word or phrase that gives an idea about what we might expect to come next, just like road signs or traffic signals that let drivers know what's coming up.
WARNING indicates the pesticide product is moderately toxic if eaten, absorbed through the skin, inhaled, or it causes moderate eye or skin irritation.
Classification of insecticide
Based on toxicity, it is classified into four types: Extremely toxic – Colour: red, symbol: skull and poison, oral LD50: 1-50. Moderately toxic – Colour: blue, symbol: danger, oral LD50: 501 – 5000. Highly toxic – Colour: yellow, symbol: poison, oral LD50: 51 – 500.
Signal words are used to indicate the level of severity of hazard. There are only two signal words – “DANGER” and “WARNING.” Within a specific hazard class, “DANGER” is used for the more severe hazards and “WARNING” for the less severe hazards.
Advisory Statements
They are written in descriptive sentences that imply recommendations: “Barrier laminate gloves provide the best protection” “Applying the product immediately after mixing with water helps to ensure that it is in suspension”
Need to Know
Chemical damage (also referred to as phytotoxicity) has a wide range of symptoms depending on the chemical it was exposed to including spots, blotches, speckling, browning, yellowing, tip burn, leaf cupping or twisting, stunting, and/or plant death.
Signal Word—The signal word indicates hazard level. "Danger" is used for the most severe instances, while "Warning" is less severe. Pictograms—These pictograms are used to identify hazardous products and are commonly grouped by chemical/physical risk, health risk and environmental risk.
Restricted-use pesticide products may only be purchased and/or used by certified pesticide applicators. They undergo required training, testing and continuing education. Restricted-use products must include a text box on the front panel of the product label indicating, "Restricted Use Pesticide."
Herbicides are chemicals used to manipulate or control undesirable vegetation. Herbicide application occurs most frequently in row-crop farming, where they are applied before or during planting to maximize crop productivity by minimizing other vegetation.
These symbols relate the oral LD50 value (mg/kg) of a pesticide to its toxicity symbol. LD50 less than 500 mg/kg indicates high toxicity. LD50 500 to 1,000 mg/kg indicates moderate toxicity. LD50 1,000 to 2,000 mg/kg indicates low toxicity.
'Pesticide' is the general term for a chemical that kills pests. Pests can be weeds, insects, nuisance rodents, diseases, etc. An insecticide is a type of pesticide. Insecticides kill insects.
: information about possible danger or trouble. They gave me a word of warning about the slippery roads.
Chemical manufacturers, importers, distributors, or employers who become newly aware of any significant information regarding the hazards of a chemical, or ways to protect against the hazards shall revise SDSs within 3 months. The labels shall be revised within 6 months.
A signal word is a prompt that alerts you about the degree or level of hazard of the product. There are only two signal words used: "Danger" or "Warning". "Danger" is used for high-risk hazards, while "Warning" is used for less severe hazards.
There are only two signal words in GHS: "Danger" or "Warning". They are used to emphasize chemical hazards and indicate the relative level of severity of the hazard. "Danger" indicates more severe hazards. Signal word is one integral part of a GHS label.
For example, “School was cancelled because there was a snowstorm.” In this sentence, the signal word is “because”. It relates the cause “there was a snowstorm” to the effect “school was cancelled.”