Manganese acetate tetrahydrate

This chemical does not meet GHS hazard criteria for 35.1% (26 of 74) of reports.

Warning

H315 (63.5%): Causes skin irritation [Warning Skin corrosion/irritation]

P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 74 reports by companies from 9 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Danger

Chemical: Acetic acid, manganese(2+) salt, tetrahydrate

Acetic acid, manganese(2+) salt, tetrahydrate: Does not have an individual approval but may be used under an appropriate group standard

Skin Irrit. 2 (63.5%)

Acute toxicity (ingestion) - category 4

13 [mg/m3]

22 [mg/m3]

740 [mg/m3]

Manganese mainly affects the nervous system and may cause behavioral changes and other nervous system effects, which include movements that may become slow and clumsy. This combination of symptoms when sufficiently severe is referred to as “manganism”. (L228)

Manganese is a cellular toxicant that can impair transport systems, enzyme activities, and receptor functions. It primarily targets the central nervous system, particularily the globus pallidus of the basal ganglia. It is believed that the manganese ion, Mn(II), enhances the autoxidation or turnover of various intracellular catecholamines, leading to increased production of free radicals, reactive oxygen species, and other cytotoxic metabolites, along with a depletion of cellular antioxidant defense mechanisms, leading to oxidative damage and selective destruction of dopaminergic neurons. In addition to dopamine, manganese is thought to perturbations other neurotransmitters, such as GABA and glutamate. In order to produce oxidative damage, manganese must first overwhelm the antioxidant enzyme manganese superoxide dismutase. The neurotoxicity of Mn(II) has also been linked to its ability to substitute for Ca(II) under physiological conditions. It can enter mitochondria via the calcium uniporter and inhibit mitochondrial oxidative phosphorylation. It may also inhibit the efflux of Ca(II), which can result in a loss of mitochondrial membrane integrity. Mn(II) has been shown to inhibit mitochondrial aconitase activity to a significant level, altering amino acid metabolism and cellular iron homeostasis. (L228)

Manganese mainly affects the nervous system and may cause behavioral changes and other nervous system effects, which include movements that may become slow and clumsy. This combination of symptoms when sufficiently severe is referred to as “manganism”. (L228)

Manganese is absorbed mainly via ingestion, but can also be inhaled. It binds to alpha-2-macroglobulin, albumin, or transferrin in the plasma and is distributed to the brain and all other mammalian tissues, though it tends to accumulate more in the liver, pancreas, and kidney. Manganese is capable of existing in a number of oxidation states and is believed to undergo changes in oxidation state within the body. Manganese oxidation state can influence tissue toxicokinetic behavior, and possibly toxicity. Manganese is excreted primarily in the faeces. (L228)

MANGANESE ACETATE TETRAHYDRATE

Magnetic Resonance Contrast Activity [MoA]; Paramagnetic Contrast Agent [EPC]

MANGANUM ACETICUM

Osmotic Laxative [EPC]; Magnesium Ion Exchange Activity [MoA]; Inhibition Small Intestine Fluid/Electrolyte Absorption [PE]; Stimulation Large Intestine Fluid/Electrolyte Secretion [PE]; Increased Large Intestinal Motility [PE]; Calculi Dissolution Agent [EPC]; Osmotic Activity [MoA]; Inhibition Large Intestine Fluid/Electrolyte Absorption [PE]

Used as a mordant in dyeing, to make a brown pigment, and as a drying agent for paints and varnishes; [Merck Index]

Painting (Pigments, Binders, and Biocides) [Category: Paint]