Used in preparation of magnesium standard solutions.

Synonyms:
Epsom salts

CAS No:
10034-99-8

Molecular Formula:
MgSO4·7H2O

Molecular Weight:
246.5

Purity:
98.0-102.0% (Titration)

Appearance:
White crystals

Solubility (water at 20°C):
72g in 100ml

Heavy Metals:
≤0.0005% (as Pb)

pH (5%):
5.0-8.2

Insoluble Material:
≤0.005%

Chloride (Cl-):
≤0.0005%

Nitrate (NO3-):
≤0.002%

Ammonium (NH4):
≤0.002%

Calcium (Ca):
≤0.02%

Manganese (Mn):
≤0.0005%

Potassium (K):
≤0.005%

Sodium (Na):
≤0.005%

Strontium (Sr):
≤0.005%

Iron (Fe):
≤0.0005%

Selenium (Se):
≤0.003%

Density:
1.67

Storage and Stability:
Store at RT. Stable for 12 months after receipt. Hygroscopic

Meets or exceeds ACS Specifications.