Nickel nitrate, a water soluble salt of Ni is irritating to the eyes, skin and, upon inhalation of the dust, respiratory tract. It may cause skin allergy. Nickel nitrate is a carcinogen, along with most other nickel compounds. The nickel ion is also toxic to aquatic organisms.

Ni acetate is a water soluble salt of Ni, which leads to skin irritation, in particular to allergic contact dermatitis. May cause cancer according to animal studies. Symptoms of overexposure to nickel can cause sensitization, dermatitis, allergic asthma and pneumonitis.

There are no information about AMMONIUM COBALTOUS PHOSPHATE, except is mentioned, that it was toxic.

Cholesterol sulfate is quantitatively the most important known sterol sulfate in human plasma, where it is present in a concentration that overlaps that of the other abundant circulating steroid sulfate, dehydroepiandrosterone (DHEA) sulfate. Cholesterol sulfate is generated in the normal epidermis by cholesterol sulfotransferase but then is desulfated in the outer epidermis as part of a 'cholesterol sulfate cycle' that is a powerful regulator of epidermal metabolism and barrier function. It accumulates in the epidermis in the human genetic disorder X-linked ichthyosis. In XLI, cholesterol sulfate levels exceed 10% of total lipid mass (≈1% of total weight). Cholesterol sulfate is a component of cell membranes where it has a stabilizing role, e.g., protecting erythrocytes from osmotic lysis and regulating sperm capacitation. It is present in platelet membranes where it supports platelet adhesion. Cholesterol sulfate can regulate the activity of serine proteases, e.g., those involved in blood clotting, fibrinolysis, and epidermal cell adhesion. Because of its ability to regulate the activity of selective protein kinase C isoforms and modulate the specificity of phosphatidylinositol 3-kinase, cholesterol sulfate is involved in signal transduction.

Dibasic lead phosphite is slight white, sweet and toxic ionic compound. Dibasic lead phosphite can dissolve in hydrochloric acid, and nitric acid, but not in water. Dibasic lead phosphite is antioxidant; it has the excellent performance of resistance to ultraviolet ray, cold, and ageing. Mainly used for the heat stabilizer of Polyvinyl Chloride opaque products because of good insulation, weatherablity and ultraviolet radiation absorbency.