Cobalt hydroxide

Metals -> Metals, Inorganic Compounds

Metals -> Metals, Inorganic Compounds

CBI; Dry Powder; Wet Solid; Dry Powder; Wet Solid; Other Solid

Blue-green or rose-red solid (red form more stable); [Merck Index] Pink powder, practically insoluble in water; [MSDSonline]

This chemical does not meet GHS hazard criteria for 100% (104 of 104) of all reports.

Not Classified

Aggregated GHS information provided per 104 reports by companies from 1 notifications to the ECHA C&L Inventory.

Danger

H302: Harmful if swallowed [Warning Acute toxicity, oral]

P203, P233, P260, P261, P264, P264+P265, P270, P271, P272, P280, P284, P301+P317, P302+P352, P304+P340, P305+P351+P338, P316, P318, P319, P320, P321, P330, P333+P317, P337+P317, P342+P316, P362+P364, P403, P403+P233, P405, and P501 (click each P-code to see the statement)

Chemical: Cobalt(II) hydroxide

Cobalt hydroxide (Co(OH)2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Cobalt hydroxide (Co(OH)2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Cobalt hydroxide (mixed): Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.

Cobalt hydroxide: Does not have an individual approval but may be used under an appropriate group standard

May be harmful; May cause skin sensitization; [MSDSonline] See Cobalt.

See Cobalt.

Not Classified

Eye irritation - category 2A

Biological Exposure Indices (BEI) [ACGIH] - Cobalt in urine = 15 ug/L; sample at end of shift at end of workweek;

Biological Exposure Indices (BEI) [ACGIH] - Cobalt in urine = 15 ug/L; sample at end of shift at end of workweek;

0.02 [mg/m3], as Co

0.02 [mg/m3], as Co

0.095 [mg/m3]

0.37 [mg/m3]

2.2 [mg/m3]

Cobalt is believed to exhibit its toxicity through a oxidant-based and free radical-based processes. It produces oxygen radicals and may be oxidized to ionic cobalt, causing increased lipid peroxidation, DNA damage, and inducing certain enzymes that lead to cell apoptosis. Cobalt has also been shown to block inorganic calcium channels, possibly impairing neurotransmission. Cobalt can also chelate lipoic acids, impairing oxidation of pyruvate or fatty acids. In addition, cobalt may inhibit DNA repair by interacting with zinc finger DNA repair proteins, and has also been shown to inhibit heme synthesis and glucose metabolism. Cobalt may activate specific helper T-lymphocyte cells and interact directly with immunologic proteins, such as antibodies (IgA and IgE) or Fc receptors, resulting in immunosensitization. (L29)

0.0077

CALEPA

Cobalt is absorbed though the lungs, gastrointestinal tract, and skin. Since it is a component of the vitamin B12 (cyanocobalamin), it is distributed to most tissues of the body. It is transported in the blood, often bound to albumin, with the highest levels being found in the liver and kidney. Cobalt is excreted mainly in the urine and faeces. (L29)

Used to make cobalt compounds, as a drier for paints, to aid drying of lithographic inks, and in storage battery electrode impregnating solutions; [Merck Index]

Battery Manufacturing [Category: Industry]

Cobalt(II) hydroxide is used as a drying agent for paints, varnishes, and inks, in the preparation of other cobalt compounds, as a catalyst, or in the manufacture of battery electrodes. (L490)

Agriculture, Forestry, Fishing and Hunting

Cobalt hydroxide (Co(OH)2): ACTIVE