Overview
Cobalt sits at the heart of two very different stories. As a material it stabilises lithium-ion battery cathodes and strengthens high-performance alloys. As a regulated substance it carries both chemical-hazard concerns and sourcing concerns, because much of the world's supply comes from regions where mining conditions draw human-rights attention.
Where it's restricted
Several cobalt salts are classified as carcinogenic and appear on the SVHC Candidate List under REACH. Cobalt metal itself is under substance evaluation in the CoRAP, so its status could tighten as that assessment proceeds.
Battery use brings a second layer. The Battery Regulation sets requirements that touch cobalt-bearing chemistries, including due-diligence expectations on raw materials.
Responsible sourcing
Cobalt is not formally one of the conflict minerals, yet its supply chain faces comparable scrutiny. Concerns centre on artisanal mining conditions in the Democratic Republic of the Congo, which produces a large share of global cobalt. Many companies extend conflict-minerals-style due diligence to cobalt as a result.
Typical uses
Battery cathodes are the fastest-growing demand. Cobalt also hardens superalloys for turbines and cutting tools, colours glass and ceramics a deep blue, and serves as a catalyst in chemical and refining processes.
Cobalt carries a double burden. The hazard classification of its salts drives chemical compliance, while the sourcing question drives supply-chain due diligence, and the two are handled by different teams.
Note: this is general educational information and not legal advice. Check the official source before you act on it.