ГИДРАТ СУЛЬФАТА КОБАЛЬТА (II)

Description

Cobalt(II) sulfate hydrate, CoSO4 xH2O is a red-orange crystalline salt, highly soluble in water and slightly soluble in methanol and ethanol.

Receipt and features

Cobalt(II) sulfate is obtained by dissolving cobalt-containing raw materials or cobalt metal in sulfuric acid, followed by crystallization, and also as a by-product of the refining of nickel and copper ores. Commercial grades differ in purity: galvanic requires a minimum of iron and copper impurities for high-quality coating, feed and fertilizer are standardized by the content of heavy metals, battery - by trace amounts of nickel and manganese for the subsequent synthesis of cathode precursors. In the European Union, cobalt(II) sulfate is included in the list of substances of particular concern due to carcinogenic and reprotoxic properties, which determines increased requirements for handling it in production. Against the backdrop of growing demand for cathode materials for electric vehicles, interest in cobalt(II) sulfate as a raw material for hydrometallurgical processing has grown noticeably, while large consumers are increasingly demanding that suppliers confirm the origin of cobalt and comply with environmental standards at all stages - from ore mining to crystallization of the finished salt, including the disposal of industrial wastewater containing trace amounts of cobalt and related metals.

Basic Attributes

• Chemical formula: CoH2O5S
• CAS No: 60459-08-7
• Molecular weight: 173.01
• Exact weight: 172.89500
• EU number: 233-334-2
• HScode: 28332930
• PSA Specifications: 89.6
• XLogP3: -0.32150

Physico-chemical characteristics

• Appearance: Red-orange Crystalline Powder
• Density: 2.03 g/mL at 25 °C (lit.)
• Solubility in water: Soluble in water. Slightly soluble in methanol and ethanol

Scope of application

It is widely used in electroplating for cobalting and as an additive in nickel plating electrolytes, raw materials for the production of cathode materials for lithium-ion batteries (via precursors LiCoO2 and NMC), a microelement additive in feed and fertilizers, a component of ceramic pigments, catalysts and driers for the paint and varnish industry.

Safety Information

• Packing level: III
• Hazard category: 9
• Transport codes: UN 3077 9/page. 3
• wgk germany: 2
• hazard class code: 49-22-42/43-50/53-68-60
• Safety instructions: 53-22-45-60-61
• RTECS number: GG3200000
• Tags: T,N
• Precautions: P201-P261-P273-P280-P284-P304 + P340
• Hazard statements: H302-H317-H334-H341-H350i-H360F-H410

Storage and transportation conditions

Store in a dry place in a tightly closed container. Batches with different degrees of hydration are not mixed with each other, since this makes it difficult to accurately calculate the sample when preparing solutions of a given concentration for electroplating baths and analytical purposes. After opening, the container is resealed to prevent caking of the crystals upon contact with the humid air of the warehouse. Expired or moistened batches are checked for the content of the main substance by laboratory analysis before use in electrolytes.