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Merck

1.02556

Cobalt(II) sulfate heptahydrate

for analysis EMSURE®

Synonym(s):

Cobalt(II) sulfate heptahydrate

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100 G

$393.00

250 G

$453.00

$393.00


Estimated to ship on31 March 2026Details

Packaging: HDPE bottle

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About This Item

Empirical Formula (Hill Notation):
CoO4S · 7H2O
CAS Number:
Molecular Weight:
281.10
MDL number:
UNSPSC Code:
12352302
EC Index Number:
233-334-2
NACRES:
NA.21
Assay:
≥99% (CoSO4.7H2O basis, complexometric)
Form:
solid
Solubility:
362 g/L

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Quality Level

product line

EMSURE®

Assay

≥99% (CoSO4.7H2O basis, complexometric)

form

solid

potency

582 mg/kg LD50, oral (Rat)

pH

4 (20 °C, 100 g/L in H2O)

mp

98 °C

solubility

362 g/L

density

1.95 g/cm3 at 20 °C

bulk density

900 kg/m3

anion traces

chloride (Cl-): ≤0.001%

cation traces

Ca: ≤0.005%
Cu: ≤0.001%
Fe: ≤0.0005%
N: ≤0.002%
Na: ≤0.01%
Ni: ≤0.005%
Pb: ≤0.001%
Zn: ≤0.005%

storage temp.

2-30°C

SMILES string

[Co+2].[S](=O)(=O)([O-])[O-].O.O.O.O.O.O.O

InChI

1S/Co.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2

InChI key

MEYVLGVRTYSQHI-UHFFFAOYSA-L

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Show Differences

1 of 4

This Item
C6768935751CDS004010
form

solid

form

powder

form

solid

form

crystals

solubility

362 g/L

solubility

-

solubility

-

solubility

-

assay

≥99% (CoSO4.7H2O basis, complexometric)

assay

≥99%

assay

≥99.99% trace metals basis

assay

-

Quality Level

300

Quality Level

200

Quality Level

200

Quality Level

-

density

1.95 g/cm3 at 20 °C

density

2.03 g/mL at 25 °C (lit.)

density

-

density

-

pH

4 (20 °C, 100 g/L in H2O)

pH

4 (20 °C, 100 g/L)

pH

-

pH

-

Analysis Note

Assay (complexometric, CoSO₄ 7 H₂O): ≥ 99 %
Chloride (Cl): ≤ 0.001 %
Total nitrogen (N): ≤ 0.002 %
Ca (Calcium): ≤ 0.005 %
Cu (Copper): ≤ 0.001 %
Fe (Iron): ≤ 0.0005 %
Na (Sodium): ≤ 0.01 %
Ni (Nickel): ≤ 0.005 %
Pb (Lead): ≤ 0.001 %
Zn (Zinc): ≤ 0.005 %

Other Notes

Replaces: CX1825; CX1825-2

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Eye Irrit. 2 - Muta. 2 - Repr. 1B - Resp. Sens. 1 - Skin Sens. 1

Storage Class Code

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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