Elevated incidences of lung and (1985) reported that rainbow trout were more sensitive when 12-months old than when 3-months The natural background levels of nickel in water are relatively low, in open ocean water 0.228– Nickel is widely distributed in nature, forming about 0.008% of the earth’s crust. The toxicity of nickel compounds appears to be related to the solubility of the compound. The core of the earth contains 8.5% nickel, deep-sea nodules 1.5%; meteorites have been found to contain 5–50% nickel (5). Some fatal cases were noted following exposure to nickel carbonyl, and by the early 1930s, nickel was a recognized cause of contact dermatitis. Agency for Toxic Substances and Disease Registry Division of Toxicology ToxFAQs TM August 2005 This fact sheet answers the most frequently asked health questions (FAQs) about nickel. Nebeker et dl. For more information, call the ATSDR Information Center at 1-888-422-8737. This fact sheet is one in a series NICKEL CARBONYL 13463-39-3 ACGIH: 0.05 ppm Ceiling as Ni NIOSH: 0.001 ppm TWA ; 0.007 mg/m3 TWA 2 ppm IDLH The key values are summarized below. Animal toxicity Nickel carbonyl [nickel tetracarbonyl, Ni(CO)4] is a colorless liquid-metal compound (boiling point, 43) and was discovered by Mond and co- workers in 1890. It is highly volatilized and readily dissociates in air. Several acute animal studies have reported soluble nickel sulphate as being the most toxic and insoluble nickel oxide the least toxic [2]. Inhalation Nickel and Inorganic Nickel Compounds Page i DSD History Effective Date Reason June 1, 2011 Original DSD posted as final July 26, 2017 DSD text revised to allow the values derived in this DSD to be used conservatively for some organic nickel compounds, if applicable. Acute animal tests in rats have shown nickel compounds to exhibit acute toxicity values ranging from low to high. Page 5 of 10 Component Exposure Limits . General toxicity The main target organ for nickel induced toxicity in animals is the respiratory tract [3]. The soluble compounds, such as nickel acetate, were the most toxic, and the insoluble forms, such as nickel powder, were the least toxic. Our knowledge on the molecular mechanisms of nickel toxicity and carcinogenicity is sketchy. Nickel as NiCl 2 was applied to the soil in solution form @ 0mgL-1(Control), 25mg L-1, 50mg L-1, 100mg L-1 and 150mg L-1. All the treatments were replicated six times. Effects of nickel toxicity on photosynthetic pigments and dry matter yield of Cicer arietinumApril 03, 2018 L. (Chickpea) varieties were observed. overall toxicity profile of nickel and its compounds, but do not contribute to the derivation of the RELs are described in Appendix A. With both species, hardness was the only significantly correlated parameter. N ickel contam ination of intravenous fluids warrants concern, owing to three specific toxic effects o f Ni2+: (a) cardiac toxic ity , especially increased coronary artery resistance, (b ) oxytocic action on th e u terus, and (c) allergic reactions, since nickel is a common allergen. These mechanisms are likely to involve binding of nickel cation to tissue and cellular components, detrimental to their structure and function, and disruption of the homeostasis of essential metals. (6) Chronic Effects (Noncancer): The findings suggest that nickel be identified as a toxic air contaminant which may disproportionately impact children, pursuant to Health and Safety Code, Section 39669.5(c). hardness and TOC on the acute toxicity of nickel to both Daphnia pulicaria and the fathead minnow (Table 6). 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