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Cobalt Sulfate Heptahydrate

Cobalt Sulfate Heptahydrate

Basic Information

CAS No.: 10026-24-1
Molecular Formula: CoH14O11S
Molecular Weight: 281.1

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Product Details

Cobalt Sulfate Heptahydrate is a red crystalline solid, soluble in water. It is mainly used in electroplating, battery materials, catalyst preparation, feed additives, and as a raw material for cobalt salts and pigment production.


Chemical Properties

PropertyValue

Melting point

98 °C

Boiling point

735°C

Density

2.03 g/mL at 25 °C(lit.)

Storage temp.

Store at +5°C to +30°C.

Solubility

H2O: soluble

Form

Solid

Specific Gravity

1.948

Color

Red-brown

PH

4 (100g/l, H2O, 20℃)

Water Solubility

362 g/L (20 ºC)

Merck

14,2448

Exposure limits

ACGIH: TWA 0.02 mg/m3

Stability:

Stable. Non-flammable. Hygroscopic. Dehydrates at around 41 C and 71 C.

InChIKey

MEYVLGVRTYSQHI-UHFFFAOYSA-L

LogP

-1.031 (est)

CAS DataBase Reference

10026-24-1(CAS DataBase Reference)

IARC

2B (Vol. 86) 2006

EPA Substance Registry System

Cobalt(2+) sulfate heptahydrate (10026-24-1)


Safety Information

PropertyValue

Hazard Codes

T,N

Risk Statements

49-42/43-51/53-50/53-22-68-60

Safety Statements

53-23-36/37-45-61-60-22

RIDADR

UN 3082 9/PG 3

WGK Germany

2

RTECS

GG3200000

TSCA

Yes

HazardClass

9

PackingGroup

III

HS Code

28332930

Toxicity

LD50 orally in Rabbit: 582 mg/kg


Product Usage

Cobalt Sulfate Heptahydrate is an important red monoclinic crystal widely used in battery materials and fine chemical sectors. In the battery industry, it is a key raw material for manufacturing lithium-ion battery cathodes (such as NCM ternary materials), playing a vital role in enhancing energy density and cycle life. In the electroplating industry, it is commonly used in cobalt plating baths to provide wear-resistant and aesthetically pleasing coatings on metal surfaces. Furthermore, it serves as a trace element supplement in animal feed, promoting Vitamin $B_{12}$ synthesis and red blood cell development in livestock. It is also utilized as a blue colorant in the ceramic and glass industries, and as a cobalt drier in the coatings industry to accelerate the drying process of paints.

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