Description
Zinc sulphate heptahydrate is an inorganic salt of pharmacopoeia quality supplied at a minimum purity of 99 % and conforming to Ph.Eur., USP and BP requirements. Identified by CAS number 7446-20-0 and EG number 231-793-3, it has the empirical formula ZnSO₄ · 7 H₂O, a molar mass of 287,54 g/mol and a density of 1,97 g/cm³. This grade is intended for analytical, pharmaceutical and general laboratory work where controlled composition and documented quality are essential. The material is Typical uses include preparation of zinc-containing reagents and solutions, reference work aligned with pharmacopoeial monographs, and inorganic synthesis or formulation tasks that call for a well-characterised heptahydrate salt. Clear specification of purity, molar mass and density helps laboratories select the appropriate grade for method development, quality control and teaching applications without unnecessary over-specification.
This article is part of Inorganic salts, in Inorganic chemicals.
Key features
- Assay (compl.): 99,0-104,0 %
- pH value (5 % solution): 4,4-5,6
- Appearance of solution: complies
- Free acid: complies
- Chloride (Cl): ≤0,03 %
- Alkali and alkaline earth metals: ≤0,9 %
- Arsenic (As): ≤0,0014 %
- Lead (Pb): ≤0,002 %
- Iron (Fe): ≤0,01 %
- Residual solvents: complies
- CAS number: 7446-20-0
- Pack sizes: 500 g, 1 kg, 5 kg
- EG nr.: 231-793-3
- Purity: min. 99 %, Ph.Eur., USP, BP
- Molar mass: 287,54 g/mol
- Density: 1,97 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Danger
Hazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Zinc sulphate heptahydrate, min. 99 %, Ph.Eur., USP, BP, 500 g, plastic
What is this article?
Zinc sulphate heptahydrate, min. 99 %, Ph.Eur., USP, BP, 500 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Inorganic salts, inside Inorganic chemicals, in Lab chemicals.
An inorganic salt is an ionic solid, a chloride, a sulfate, a nitrate, a phosphate. The degree of hydration changes the mass that contains one mole of the ion. Analytical grade limits the foreign ions. A hydrate and the anhydrous salt are not interchangeable by weight.
An inorganic chemical is a salt, an acid or base in solid form, a metal, an oxide, or an element. The waters of hydration are part of the formula: a hydrate and an anhydrous salt are different masses for the same ion. Trace metals matter when the salt will be used in analysis. Nanomaterials add particle size to the specification. Look the substance up on PubChem. Hazard classes are on ECHA, under the CLP Regulation and REACH. Transport of the dangerous ones is explained by the UNECE.
Which category should I open next?
The category is Inorganic chemicals. The sub-category is Inorganic salts. The catalogue is Lab chemicals.
Shelves beside this one are Metals, elements & oxides and Nanomaterials & quantum dots.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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