Nickel (II) oxide is an olive gray powder, insoluble in water and soluble in acids. It is produced industrially and used mainly as an intermediate in the production of nickel alloys and as a hydrogenation catalyst. Long-term inhalation of NiO is damaging to the lungs, causing lesions and in some cases cancer.

Nickel (II) oxide is an olive gray powder, insoluble in water and soluble in acids. It is produced industrially and used mainly as an intermediate in the production of nickel alloys and as a hydrogenation catalyst. Long-term inhalation of NiO is damaging to the lungs, causing lesions and in some cases cancer.

Nickel (II) oxide is an olive gray powder, insoluble in water and soluble in acids. It is produced industrially and used mainly as an intermediate in the production of nickel alloys and as a hydrogenation catalyst. Long-term inhalation of NiO is damaging to the lungs, causing lesions and in some cases cancer.

Nickel (II) oxide is an olive gray powder, insoluble in water and soluble in acids. It is produced industrially and used mainly as an intermediate in the production of nickel alloys and as a hydrogenation catalyst. Long-term inhalation of NiO is damaging to the lungs, causing lesions and in some cases cancer.

Nickel (II) oxide is an olive gray powder, insoluble in water and soluble in acids. It is produced industrially and used mainly as an intermediate in the production of nickel alloys and as a hydrogenation catalyst. Long-term inhalation of NiO is damaging to the lungs, causing lesions and in some cases cancer.

Quaternium-15, a preservative, is one of the most used substances and is added to several cosmetics and other industrial products. Quaternium-15 is a mixture of isomers, where the cis-form is the dominant form and where the trans-form is the minor component present as an impurity. Quaternium-15 can be found under a variety of names, most commonly those of the Dow Chemical Company: Dowicil 200 (cis isomer only), Dowicil 75 and Dowicil 100 (both a mix of cis and trans isomers). The isolated cis-compound is used primarily in cosmetic applications, with a maximum permitted concentration in the EU of 0.2%. DOWICIL 200 preservative (cis form) is used primarily as a preservative in a wide variety of personal-care and cosmetic products. It is designed to provide highly effective broad-spectrum antimicrobial activity, especially in water-based formulations. It is used in both leave-on and rinse-off application such as baby-care products, hair-care products, lotions, powders, and creams. The mixed product (cis- and trans-) is used in a wider range of formulations such as: emulsifiable metal-cutting fluids; latex and emulsion paints; liquid floor polishes and floor waxes; glues and adhesives. Recently, the cis-form has been classified as a CMR substance with the classification toxic to reproduction, category 3. This classification only concerns the cis-isomer:

Ethylenediamine is a strongly basic amine useful as a building block in chemical synthesis. It is used as a solvent to dissolve proteins such as albumins, casein and in medicine to stabilize aminophylline when used in injections. Ethylenediamine is used in manufacture of chelating agents (EDTA), epoxy curing agents, dimethylolethylene-urea resins, emulsifying agents, textile lubricants, antifreeze inhibitor. It is also involved in the manufacture of many industrial chemicals and forms derivatives with carboxylic acids, nitriles, alcohols, alkylating agents, carbon disulfide, aldehydes and ketones. It is a basic building block to prepare heterocyclic compound such as imidazolidines.

Propylparaben is a bacteriostatic and fungistatic agent used as a preservative in cosmetic products, food and drugs. As a food additive, it has the E number E216. To increase the activity and reduce its dose propylparaben is used in a mixture with other parabens and in combination with other types of preservatives. Propylparaben is a chemical allergen capable of producing immunologically mediated hypersensitivity reactions. Chemically it is an ester of p-hydroxybenzoic acid.

Chloric(V) acid is used in chemical analysis and to make other chemicals.

Cobalt is a transition metal, naturally ocurring in the minerals cobaltite, smaltite, and erythrite, and is often associated with nickel, silver, lead, copper, and iron ores, from which it is most frequently obtained as a by-product. Depending on the considered species, cobalt has multiple industrial applications including the production of alloys and hard metal, diamond polishing, drying agents, pigments and catalysts. Cobalt is an essential component of Vitamin B12 (hydroxycolalamin). Cobalt functions as a co-factor in enzyme catalysed reactions and is involved in the production of erythropoietin, a hormone that stimulates the formation of erythrocytes. Cobalt salts were used to treat anemia and stimulate erythropoiesis, but was withdrawn from market since Co(II) cations are genotoxic in vitro and in vivo, and carcinogenic in rodents. Hovewer, Co salts are reported to be used by athletes as a doping