Scotti Adams
Apr-02-2004, 9:01am
..a while back there was a topic on this...I couldnt find this info then..excuse my mess if its old news...
Potassium dichromate is a carcinogen. The MSDS gives it a health rating of 4 (Extreme;Cancer Causing)
It is rated as a severe oxidizer and it's contact rating is a 3 (Severe;Life)
Here is a list of the potential health effects
Inhalation:
Corrosive. Extremely destructive to tissues of the mucous membranes and upper respiratory tract. May cause ulceration and perforation of the nasal septum. Symptoms may include sore throat, coughing, shortness of breath, and labored breathing. May produce pulmonary sensitization or allergic asthma. Higher exposures may cause pulmonary edema.
Ingestion:
Corrosive. Swallowing can cause severe burns of the mouth, throat, and stomach, leading to death. Can cause sore throat, vomiting, diarrhea. May cause violent gastroenteritis, peripheral vascular collapse, dizziness, intense thirst, muscle cramps, shock, coma, abnormal bleeding, fever, liver damage and acute renal failure.
Skin Contact:
Corrosive. Symptoms of redness, pain, and severe burn can occur. Dusts and strong solutions may cause severe irritation. Contact with broken skin may cause ulcers (chrome sores) and absorption, which may cause systemic poisoning, affecting kidney and liver functions. May cause skin sensitization.
Eye Contact:
Corrosive. Contact can cause blurred vision, redness, pain and severe tissue burns. May cause corneal injury or blindness.
Chronic Exposure:
Repeated or prolonged exposure can cause ulceration and perforation of the nasal septum, respiratory irritation, liver and kidney damage and ulceration of the skin. Ulcerations at first may be painless, but may penetrate to the bone producing "chrome holes." Known to be a human carcinogen.
Aggravation of Pre-existing Conditions:
Persons with pre-existing skin disorders, asthma, allergies or known sensitization to chromic acid or chromates may be more susceptible to the effects of this material.
The chromium in potassium chromate (K2CrO4) and potassium dichromate (K2Cr2O7) are both in the chromium(VI) oxidation state. They are fairly strong oxidizing agents, which means that they themselves are reduced. The reduction products are usually some form of chromium(III), e.g., Cr2O3. Cr2O3 is green, hence the unwanted side effect of using dichromates to color wood is a greenish tint.
Potassium dichromate is a carcinogen. The MSDS gives it a health rating of 4 (Extreme;Cancer Causing)
It is rated as a severe oxidizer and it's contact rating is a 3 (Severe;Life)
Here is a list of the potential health effects
Inhalation:
Corrosive. Extremely destructive to tissues of the mucous membranes and upper respiratory tract. May cause ulceration and perforation of the nasal septum. Symptoms may include sore throat, coughing, shortness of breath, and labored breathing. May produce pulmonary sensitization or allergic asthma. Higher exposures may cause pulmonary edema.
Ingestion:
Corrosive. Swallowing can cause severe burns of the mouth, throat, and stomach, leading to death. Can cause sore throat, vomiting, diarrhea. May cause violent gastroenteritis, peripheral vascular collapse, dizziness, intense thirst, muscle cramps, shock, coma, abnormal bleeding, fever, liver damage and acute renal failure.
Skin Contact:
Corrosive. Symptoms of redness, pain, and severe burn can occur. Dusts and strong solutions may cause severe irritation. Contact with broken skin may cause ulcers (chrome sores) and absorption, which may cause systemic poisoning, affecting kidney and liver functions. May cause skin sensitization.
Eye Contact:
Corrosive. Contact can cause blurred vision, redness, pain and severe tissue burns. May cause corneal injury or blindness.
Chronic Exposure:
Repeated or prolonged exposure can cause ulceration and perforation of the nasal septum, respiratory irritation, liver and kidney damage and ulceration of the skin. Ulcerations at first may be painless, but may penetrate to the bone producing "chrome holes." Known to be a human carcinogen.
Aggravation of Pre-existing Conditions:
Persons with pre-existing skin disorders, asthma, allergies or known sensitization to chromic acid or chromates may be more susceptible to the effects of this material.
The chromium in potassium chromate (K2CrO4) and potassium dichromate (K2Cr2O7) are both in the chromium(VI) oxidation state. They are fairly strong oxidizing agents, which means that they themselves are reduced. The reduction products are usually some form of chromium(III), e.g., Cr2O3. Cr2O3 is green, hence the unwanted side effect of using dichromates to color wood is a greenish tint.