A man who fell into a barrel of Chromic acid while at work Monday followed correct procedures and is recovering in a Grand Rapids, Mich., hospital, his employer said.
The man, 45, is a 10-year employee of Lacks Enterprises in Grand Rapids and was performing a maintenance function when he slipped and fell into a tank of diluted chromic acid(CAS: 7738-94-5), a toxic and carcinogenic element of the chrome-plating process, the news website MLive.com reported Monday.
It added only the man's legs were dunked in the acid.Jim Green, human resources director of the firm, said the employee was wearing a safety harness and other appropriate equipment when the accident occurred, and fellow employees hosed the victim down according to protocol.
"I spoke to him personally today, and hope to be in touch with him again soon. We anticipate a full recovery," Green said of the employee's injuries.
Chromic acid(CAS:7738-94-5)was widely used in the instrument repair industry, due to its ability to "brighten" raw brass. A chromic acid dip leaves behind a bright yellow patina on the brass. Due to growing health and environmental concerns, many have discontinued use of this chemical in their repair shops.
In this article, we can talk something about the Potential Health Effects of chromic acid.
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.
Chromic acid 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.
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Chromic acid is a kind of dark red crystals or powder, Density 2.67 g/cm3, Melting point 385 F . Under prolonged exposure to fire or heat the containers may explode. Highly toxic, A confirmed human carcinogen. It is deliquescent, water soluble, and giving acidic solutions. The Molecular Formula is CrO3, Formula Weight is 99.99, and the CAS NO is 1333-82-0.
Chromic acid is a powerful oxidizing agent. It can react violently upon contact with reducing reagents, including organic matter, leading to ignition or explosion. Dangerously reactive with acetone, alcohols, alkali metals (sodium, potassium), ammonia, arsenic, dimethylformamide, hydrogen sulfide, phosphorus, peroxyformic acid, pyridine, selenium, sulfur, and many other chemicals.
Chromic acid(CAS NO:1333-82-0) is noncombustible but can accelerate the burning of combustible materials. Sufficient heat may be generated from the reaction with combustible materials to ignite the mass. Aqueous solutions corrode many metals rapidly. It is often mixed with sulfuric acid to make "cleaning solution" for glass. Used cleaning solution in closed bottles may explode due to the build up of gaseous carbon dioxide arising from oxidation of organic impurities.
Chromic acid is an intermediate in chromium plating, and is also used in ceramic glazes, and colored glass. Because a solution of chromic acid in sulfuric acid (also known as a sulfochromic mixture or chromosulfuric acid) is a powerful oxidizing agent, it can be used to clean laboratory glassware, particularly of otherwise insoluble organic residues. This application has declined due to environmental concerns. Furthermore the acid leaves trace amounts of paramagnetic chromic ions that can interfere with certain applications, such as NMR spectroscopy. This is especially the case for NMR tubes.
Chromic acid was widely used in the instrument repair industry, due to its ability to "brighten" raw brass. A chromic acid dip leaves behind a bright yellow patina on the brass. Due to growing health and environmental concerns, many have discontinued use of this chemical in their repair shops.
In organic chemistry, dilute solutions of chromic acid can be used to oxidize primary or secondary alcohols to the corresponding aldehydes and ketones. Tertiary alcohol groups are unaffected. Because of the oxidation is signaled by a color change from orange to a blue-green, chromic acid is used as a qualitative analytical test for the presence of primary or secondary alcohols.
Toxic by ingestion. Inhalation of Chromic acid dust is toxic. Fire may produce irritating, corrosive and/or toxic gases. Contact with Chromic acid may cause severe burns to skin and eyes. Run off from fire control or dilution water may cause pollution. Chromic acid will accelerate burning when involved in a fire. May explode from heat or contamination. Some may burn rapidly. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.
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