Description

Zinc Carbonate CAS NO 3486-35-9 is a fundamental inorganic zinc salt widely used as a versatile precursor and additive across multiple industries. Its primary commercial value lies in its ability to serve as a source of zinc oxide upon thermal decomposition and as a functional additive in rubber and polymer processing. This compound is essential for manufacturers in the rubber, ceramics, personal care, and agricultural sectors seeking a reliable and consistent source of zinc. Our product is supplied to meet the stringent quality demands of industrial-scale production.

Application

• Rubber Industry: Acts as an activator in the vulcanization process, improving the physical properties and curing efficiency of rubber products.
• Ceramics & Glazes: Used as a flux and opacifier in ceramic glazes and frits, contributing to whiteness and surface finish.
• Personal Care & Cosmetics: Serves as a colorant and bulking agent in makeup products, such as powders and foundations.
• Animal Nutrition & Feed: Utilized as a source of essential zinc in mineral premixes for livestock and poultry feed supplements.
• Chemical Synthesis: Functions as a key starting material for the production of other zinc compounds, including zinc oxide and various zinc salts.
• Flame Retardants & Smoke Suppressants: Incorporated into polymers and plastics to enhance fire resistance properties.
• Agricultural Chemicals: Used in the formulation of certain fungicides and micronutrient fertilizers.
• Pigments & Paints: Employed as a corrosion-inhibiting pigment in some primer formulations.

Basic Information

Product Name	Zinc Carbonate
CAS No.	3486-35-9
Molecular Formula	ZnCO₃
Molecular Weight	125.39 g/mol
Synonyms	Zinc monocarbonate; Carbonic acid, zinc salt (1:1); Smithsonite (mineral form); Zinc(II) carbonate; Calamine (historical); Zinc spar; ZnCO₃; Basic zinc carbonate (common commercial form)
EINECS	222-477-6

Quality Control

Our Zinc Carbonate is manufactured under a strict quality management system to ensure batch-to-batch consistency and reliability. The product undergoes comprehensive analytical testing, including assay, heavy metal limits, and loss on drying, to meet relevant industrial and technical grade specifications. A Certificate of Analysis (COA) documenting all test results is provided with each shipment to guarantee compliance with your specifications.

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 material is hygroscopic (moisture-sensitive) and should be kept away from strong acids.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (as Zn)	≥ 55.0 %
Loss on Drying	≤ 2.0 %
Lead (Pb)	≤ 20 ppm
Cadmium (Cd)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Particle Size (Typical)	Contact for details

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