IRON (II) SULFATE HEPTAHYDRATE (tech grade), kg

Parameter	Attribute
Iron II sulfate	Ferrous sulphate, Green vitriol, Iron vitriol, Copperas, Melanterite, Szomolnokite
Formula	FeSO4 * 7H2O
Structure
IUPAC	Iron(II) sulfate
INCI	FERROUS SULFATE
CAS	7782-63-0
Molar mass	260.00 g/mol
Density	1.895 g/ml
Solubility	In water 29.51 g/100 mL (25 °C)

Ferrous sulfate is otherwise known as divalent ferrous sulphate with the formula FeSO₄-7H₂O. The compound is also known as greenstone. It is highly soluble in water. It is commonly found as a raw material for other iron compounds. It is used as a good reducing agent, reducing chromates to the less toxic trivalent chromium. Found as a dye or dye fixative, in ink production, etc.

In medicine, ferrous sulfate is used to reduce iron deficiency. The use of iron compounds has side effects such as constipation. Laxatives are used in combination to reduce constipation.

In the dyeing industry, ferrous sulphate is used as one of the raw materials in the production of paints and inks. Iron sulfate solution is used to produce a yellow/pink color on concrete, limestone or sandstone. Iron sulfate is also used in wood staining to produce darker shades and to bring out the grain of the wood, in new boards to give an aged look, and is best suited to larch wood as larch has tannins with which iron sulfate reacts, and for a grey, low-maintenance patio. Approximate yield: 8-10m2/kg. IMPORTANT: Avoid dripping on concrete, stone, façade decor, clinker, stone or pavers. Rust marks may remain Iron sulfate is sometimes used to blacken canned olives.

In horticulture, it is used to control moss on lawns, building roofs, fences, monuments and trees. The use of ferrous sulfate acidifies the soil, making it easier for plants to absorb nutrients. Spray shrubs, berry bushes, fruit trees in spring before bud swelling or in late autumn after foliage has fallen after harvest. When planting shrubs and berry bushes, fruit trees, tubers, bulbs, soak the roots in a solution of ferrous sulfate to prevent disease. Use an aqueous solution of 1-5% ferrous sulfate. Lower concentrations are more suitable for strengthening the lawn itself, higher concentrations for moss control. A 1% solution can be used initially, with higher concentrations if no significant effect is observed. To prepare the 1% solution, dissolve 100 g of ferrous sulfate in 10 l of water in a plastic container. For sprinkler treatment, a higher amount of water is required - 30 l water/100 m2, for spray treatment - 10 l water/100 m2 of lawn. A few days after treatment, the moss starts to blacken and dies. Rake up the dead moss and remove it. Use ferrous sulfate as a long-lasting plant tonic for acid-loving plants such as ericaceous plants like heather, rhododendrons, conifers, camellias and azaleas. Iron sulfate helps to acidify the soil and prevent yellowing of leaves. The recommended rate is 35 g per square meter. Do not overdose: use only the recommended rates. Recommended rates for ferrous sulfate as a lawn tonic and for moss control:

Application rate for green lawns: 0,5-1 g per square meter.

Application rate for hardening lawns: 1,5 to 2 g per square meter.

Application rate for moss control: 4 to 5 g per square meter.

In water treatment, ferrous sulfate is used as a flocculant (water clarifier), to help settle fine particles and to remove phosphorus compounds, thereby reducing eutrophication (water damage) in both industrial and domestic applications. In some cases used as a corrosion inhibitor in copper pipe systems to form a protective film. Ferrous sulfate can also be used to produce FENTON REAGENT (ferrous sulfate with hydrogen peroxide), which is used to treat wastewater by oxidising and/or degrading organic compounds.

In the metal industry, ferrous sulfate is used as a tool to help to precipitate gold from gold chloride solutions (after its dissolution in royal acid).

In cosmetics, ferrous sulfate is used in small concentrations to thicken the skin and pores in the skin. Main INCI function:

• Astringent: helps to tighten skin pores

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