Description

Zinc Carbonate Basic CAS NO 12011-79-9 is a high-purity, fine white powder widely used as a versatile intermediate and functional additive. It serves as a critical source of zinc in numerous industrial processes, valued for its reactivity and role in producing other zinc compounds. This product is essential for manufacturers in the rubber, ceramics, personal care, and agricultural sectors seeking a reliable and consistent zinc source.

Application

• Rubber Industry: Acts as an activator in the vulcanization process, improving the physical properties and durability of rubber products.
• Ceramics & Glazes: Used as a flux and opacifier to lower firing temperatures and enhance the whiteness and finish of ceramic glazes and frits.
• Personal Care: A key ingredient in cosmetics and skincare products, particularly in calamine lotions and powders, for its soothing and astringent properties.
• Animal Nutrition: Serves as a vital zinc supplement in feed premixes to support animal health, growth, and immune function.
• Chemical Synthesis: A primary raw material for the production of other zinc salts, such as zinc oxide and zinc sulfate.
• Pigments & Paints: Functions as a corrosion-inhibiting pigment and a UV stabilizer in protective coatings and primers.
• Pharmaceuticals: Utilized as an active pharmaceutical ingredient (API) and excipient in various medicinal formulations.
• Agriculture: Incorporated into fertilizers and fungicides to correct zinc deficiencies in soil and protect crops.

Basic Information

Product Name	Zinc Carbonate Basic
CAS No.	12011-79-9
Molecular Formula	Typically represented as 3Zn(OH)₂·2ZnCO₃ or Zn₅(CO₃)₂(OH)₆
Molecular Weight	549.01 g/mol (for Zn₅(CO₃)₂(OH)₆)
Synonyms	Basic Zinc Carbonate; Zinc Hydroxide Carbonate; Zinc Subcarbonate; Zinc Carbonate Hydroxide; C.I. 77950; Zinc White (when calcined to ZnO); Zinc Monohydrate Carbonate; Hydrozincite (mineral form)
EINECS	234-557-4

Quality Control

Our Zinc Carbonate Basic is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, heavy metal content, and loss on drying. Production adheres to relevant industrial and feed-grade specifications, and we can support compliance requirements for REACH, FDA, and other global regulatory frameworks.

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); keep the container tightly sealed to prevent absorption of moisture and carbon dioxide from the air. Keep away from strong acids.

Specification

Item	Specification
Appearance	White, fine powder
Identification (IR)	Conforms
Assay (as Zn)	57.0% min
Loss on Drying	2.0% max
Chloride (Cl)	0.05% max
Sulfate (SO₄)	0.05% max
Lead (Pb)	10 ppm max
Cadmium (Cd)	2 ppm max
Arsenic (As)	3 ppm max
Particle Size (Passing 325 mesh)	99.0% min

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