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Pale green USP-grade crystals for pharmaceutical and compendial applications.
Ferrous Sulphate Heptahydrate USP (FeSO₄·7H₂O) is supplied as pale green crystalline material conforming to United States Pharmacopeia standards. It is widely used in pharmaceutical formulations, nutritional supplements, and compendial preparations where USP-grade quality is required. Its controlled purity, consistent iron content, and specification compliance ensure suitability for regulated pharmaceutical and healthcare applications.
TESTS | SPECIFICATION |
Description | Pale, bluish-green crystals or granules. Is odorless and is efflorescent in dry air. Oxidizes readily in moist air to form brownish yellow basic ferric sulfate. |
Identification
| A. B. 1 N sodium hydroxide, solutions of ferrous salts yield a greenish-white precipitate; when shaken, the color changes rapidly to green and then to brown. SULFATES: C. D. E. Hydrochloric acid produces no precipitate when added to solutions of sulfates (distinction from thiosulfates).
|
Solubility | Very soluble in boiling water; freely soluble in water; insoluble in alcohol. |
pH | Its solution (1 in 10) is acid to litmus, having a pH of about 3.7. |
Assay (on dried basis) | 99.5-104.5% |
Mercury | NMT 3 µg/g |
Arsenic | Max 3 ppm |
Lead | Max. 10 ppm |
To preserve its quality, store the product at room temperature in a dry, well-sealed container. It is efflorescent in dry air and can oxidize in moist conditions, so minimizing exposure to air and humidity is important.
Its high purity and consistent crystalline form ensure reliable and reproducible results. The product's excellent solubility in water makes it suitable for precise formulations and laboratory experiments.
It tends to oxidize readily in moist air, turning from bluish-green to a brownish yellow as basic ferric sulfate forms. To prevent this, exposure to moisture should be limited during handling and storage.
Besides pharmaceutical use, it is employed in industrial sectors such as water treatment, chemical manufacturing, and as a laboratory reagent due to its chemical properties and safety profile.
For quick and efficient dissolution, add the powder to boiling or warm water, in which it is very soluble. Avoid using alcohol as the compound is insoluble in it.
No, the product is not classified as poisonous, making it suitable for a wide range of controlled applications when handled according to standard safety protocols.
Established in 2011, J J Chemicals is a trusted manufacturer, trader, and exporter of high-quality industrial and laboratory chemicals, based in Vadodara, Gujarat, India.
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