31665

Zinc sulfate heptahydrate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5%

• Linear Formula: ZnSO₄ · 7H₂O
• CAS Number: 7446-20-0
• Molecular Weight: 287.56
• EC Number: 231-793-3
• MDL number: MFCD00149894
• UNSPSC Code: 12352302
• PubChem Substance ID: 329753872
• NACRES: NA.21

Properties

• grade: ACS reagent; puriss. p.a.
• Agency: USP/NF; reag. ISO; reag. Ph. Eur.
• Assay: ≥99.5%
• form: powder or crystals
• impurities: ≤0.0005% total nitrogen (N)
• pH: 4.4-5.6 (20 °C, 5%)
• anion traces: chloride (Cl^-): ≤5 mg/kg
• cation traces: As: ≤0.5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤2 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤10 mg/kg; Mg: ≤10 mg/kg; Mn: ≤2 mg/kg; Na: ≤5 mg/kg; Pb: ≤5 mg/kg
• SMILES string: O.O.O.O.O.O.O.[Zn++].[O-]S([O-])(=O)=O
• InChI: 1S/H2O4S.7H2O.Zn/c1-5(2,3)4;;;;;;;;/h(H2,1,2,3,4);7*1H2;/q;;;;;;;;+2/p-2
• InChI key: RZLVQBNCHSJZPX-UHFFFAOYSA-L

Description

General description

Zinc sulfate heptahydrate has various industrial applications. It is widely employed as an electrolyte for zinc electroplating and for the storage of solar energy in various solar appliances. Its crystals exhibit diamagnetism.

Application

Zinc sulfate heptahydrate may be used in the following studies:

• To compose electrolyte for the electrodeposition of Cu-Zn-Sn precursors on Mo-coated glass substrates.
• Preparation of internal standard (IS) working solution for use in liquid chromatography (LC) coupled with mass spectrometry (MS) analysis.
• Titrimetric estimation of holmium content in the holmium loaded poly(L-lactic acid) films and microspheres.

Safety Information

• Pictograms: GHS05,GHS07,GHS09
• Signal Word: Danger
• Hazard Statements: H302,H318,H410
• Precautionary Statements: P264 - P273 - P280 - P301 + P312 - P305 + P351 + P338 - P391
• Hazard Classifications: Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable