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Topic Date User
liquid chalk 28-May-2004 At 11:05:19 AM M
Message
You may want to consider the possible health effects when using alcohols in liquid chalk. It’s a lot to read but worth considering before you put these things on your hands. Some of the effects below may only occur with repeated high concentration exposure but other effects may only require limited exposure. I was thinking about making some but I have changed my mind.

The data below is taken from material safety data sheets.

Methanol / methyl alcohol

Potential Health Effects
Eye: Produces irritation, characterized by a burning sensation, redness, tearing, inflammation, and possible corneal injury. May cause painful sensitization to light.
Skin: Causes moderate skin irritation. May be absorbed through the skin in harmful amounts. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis.
Ingestion: May be fatal or cause blindness if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause systemic toxicity with acidosis. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. May cause cardiopulmonary system effects.
Inhalation: Harmful if inhaled. May cause adverse central nervous system effects including headache, convulsions, and possible death. May cause visual impairment and possible permanent blindness. Causes irritation of the mucous membrane.
Chronic: Prolonged or repeated skin contact may cause dermatitis. Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion. Chronic exposure may cause reproductive disorders and teratogenic effects. Laboratory experiments have resulted in mutagenic effects. Prolonged exposure may cause liver, kidney, and heart damage.




Isopropanol, isopropyl alcohol

Warning! Flammable liquid. May cause skin irritation. Hygroscopic. May cause central nervous system depression. May cause kidney damage. May form explosive peroxides. May cause reproductive effects based upon animal studies. May cause severe eye irritation and possible injury. Causes digestive and respiratory tract irritation. Target Organs: Kidneys, central nervous system.

Potential Health Effects


Eye:
Produces irritation, characterized by a burning sensation, redness, tearing, inflammation, and possible corneal injury.
Skin:
May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis. May cause irritation with pain and stinging, especially if the skin is abraded.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause kidney damage. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure.
Inhalation:
Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. Inhalation of vapor may cause respiratory tract irritation. May cause narcotic effects.
Chronic:
Prolonged or repeated skin contact may cause defatting and dermatitis. May cause allergic skin reaction in some individuals.

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