Ammonium sulfate 99.5% AR [7783-20-2] Ammonium sulfate is a typical nitrogen-based fertilizer, soluble in water and fast-acting, for various soils and crops. It is mainly used as an artificial fertilizer for alkaline soils. Ammonium ion is released in the soil, which creates a small amount of acid, lowering the soil’s pH balance, while contributing to the growth of nitrogen necessary for plant growth. Used as a flux, flame retardant in the textile industry, as a salting agent, regulating osmotic pressure in medicine. Used as a raw material for hydrogen peroxide, ammonium chloride, ammonium alum and production in the chemical industry, as a flux in the welding industry. Used as additives for electroplating baths in the electroplating industry.
Water insoluble substances max. 0.01%
Roasting residue max. 0.06%
Free acids (calculated as H2SO4) max. 0.05%
Chlorides (Cl) max. 0.002%
Nitrates (NO3) max. 0.005%
Phosphates (PO4) max. 0.002%
Heavy metals (Pb unit) max. 0.002%
Iron (Fe) max. 0.001%
Arsenic (As) max. 0.001%
pH (5%, 20oC) 4.0–6.0
Labeling of hazardous chemicals and mixtures that are part of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). The pictograms recommended by GHS have the shape of a square set on the top. They should contain a black symbol on a white background with a red border.
Priority rules to be observed in connection with the labeling of a substance:
– the skull and crossbones, the exclamation mark pictogram should not be added.
– corrosive effect, the exclamation mark pictogram should not be added if it concerns eye or skin irritation.
– health hazard determining respiratory sensitization, the exclamation mark pictogram should not be added if it concerns skin sensitization or irritation to eyes or skin.
Source: GHS pictograms