Description

Cobalt Chloride, Dihydrate is an inorganic salt of cobalt, widely recognized for its role as a precursor in the synthesis of other cobalt compounds and as a source of cobalt ions. Its consistent quality and reliable performance make it a critical raw material for demanding industrial and research applications. This product is essential for manufacturers and researchers in sectors such as catalysts, pigments, humidity indicators, and animal nutrition, where precise chemical composition is paramount.

Application

• Catalyst Precursor: A key starting material in the manufacture of catalysts for petroleum refining, hydroformylation, and other organic synthesis processes.
• Pigments & Dyes: Used in the production of vibrant blue and green ceramic glazes, glass colorants, and specialty paints.
• Humidity Indicators: The basis for silica gel desiccants that change color (blue to pink) with moisture levels, widely used in packaging and controlled environments.
• Animal Nutrition (Feed Additive): Serves as a source of the essential trace element cobalt for ruminants, necessary for vitamin B12 synthesis.
• Electroplating & Surface Treatment: Provides cobalt ions for electroplating baths to deposit cobalt or cobalt alloy coatings for wear and corrosion resistance.
• Chemical Reagent & Research: Employed in analytical chemistry, academic research, and as a reagent for synthesizing coordination complexes.
• Adhesive & Sealant Additive: Functions as a drying agent or cross-linking promoter in certain polymer systems.

Basic Information

Product Name	Cobalt Chloride, Dihydrate
CAS No.	16544-92-6
Molecular Formula	CoCl₂·2H₂O
Molecular Weight	165.87 g/mol (anhydrous basis: 129.84 g/mol)
Synonyms	Cobalt(II) chloride dihydrate; Cobalt dichloride dihydrate; Cobaltous chloride dihydrate; Cobalt muriate dihydrate; Cobalt chloride (CoCl2) dihydrate; Cobalt(2+) chloride dihydrate; Cobalt chloride hydrate (1:2:2)
EINECS	240-589-7 (for anhydrous form; commonly referenced)

Quality Control

Our Cobalt Chloride, Dihydrate is produced and tested under a stringent quality management system to ensure batch-to-batch consistency and compliance with relevant industry specifications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profiles, and physical characteristics. For specific grade requirements, including technical, reagent, or feed-grade standards, please contact our technical sales team.

Storage

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

Specification

Item	Specification
Appearance	Red to violet crystalline powder
Identification (IR)	Conforms
Assay (CoCl₂·2H₂O)	≥ 98.0 %
Insoluble Matter	≤ 0.01 %
Nitrate (NO₃)	≤ 0.01 %
Sulfate (SO₄)	≤ 0.01 %
Iron (Fe)	≤ 0.001 %
Nickel (Ni)	≤ 0.1 %
Zinc (Zn)	≤ 0.005 %

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