Description

Zinc Sulfate Heptahydrate CAS NO 7446-20-0 is a high-purity, crystalline inorganic salt that serves as a vital source of bioavailable zinc. This essential micronutrient is critical for numerous industrial, agricultural, and pharmaceutical processes, ensuring optimal performance and quality in end products. It is a key raw material for manufacturers in the agriculture, animal nutrition, pharmaceutical, and chemical synthesis sectors seeking a reliable and consistent supply of zinc.

Application

• Agricultural Micronutrient Fertilizer: Corrects zinc deficiencies in soil and crops, promoting healthy plant growth and higher yields.
• Animal Feed Supplement: An essential trace mineral additive in premixes for livestock, poultry, and aquaculture to support immune function, growth, and reproduction.
• Pharmaceutical & Nutraceutical Ingredient: Used in the formulation of vitamin and mineral supplements, lozenges, and topical ointments.
• Water Treatment Coagulant Aid: Assists in the clarification process in municipal and industrial water treatment plants.
• Chemical Synthesis Intermediate: A precursor for the production of other zinc compounds, pigments (e.g., lithopone), and catalysts.
• Electroplating & Surface Treatment: Provides a source of zinc ions in electrolyte baths for galvanizing and electroplating applications.
• Textile Processing Aid: Used as a mordant in dyeing processes to improve color fastness on fabrics.
• Laboratory Reagent: Serves as a standard and reagent in analytical chemistry and research laboratories.

Basic Information

Product Name	Zinc Sulfate Heptahydrate
CAS No.	7446-20-0
Molecular Formula	ZnSO₄·7H₂O
Molecular Weight	287.56 g/mol
Synonyms	Zinc Sulphate Heptahydrate; Zinc Vitriol; White Vitriol; Goslarite; Sulfuric Acid, Zinc Salt (1:1), Heptahydrate; Zinc(II) Sulfate Heptahydrate; ZnSO4.7H2O
EINECS	231-793-3

Quality Control

Our Zinc Sulfate Heptahydrate is manufactured under a stringent quality management system. We offer various grades, including Technical, Feed, and Pharmaceutical grades, with specifications tailored to meet industry standards such as USP, FCC, and monographs from other international pharmacopoeias. Every batch undergoes rigorous analytical testing, and a comprehensive Certificate of Analysis (COA) is available upon request to ensure traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in original packaging or a moisture-proof container to prevent caking and degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White Crystalline Powder or Granules
Identification (IR)	Conforms
Assay (ZnSO₄·7H₂O)	≥ 99.0 %
Zinc (Zn) Content	≥ 22.5 %
pH (5% Solution)	4.0 - 6.0
Insoluble Matter	≤ 0.02 %
Chloride (Cl)	≤ 0.05 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm
Manganese (Mn)	≤ 10 ppm
Loss on Drying	43.0 - 48.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.