1.02161

Supelco

Calcium sulfate dihydrate

precipitated for analysis EMSURE®

Synonym(s):
Calcium sulfate dihydrate
Empirical Formula (Hill Notation):
CaO4S · 2H2O
CAS Number:
Molecular Weight:
172.17
MDL number:
EC Index Number:
231-900-3

storage conditions

Store at +5°C to +30°C.

Quality Level

assay

99.0-102.0% (complexometric)

form

solid

potency

>10000 mg/kg LD50, oral (Rat)

pH

7.0 (20 °C, 50 g/L in H2O, slurry)

solubility

2 g/L

density

2.32 g/cm3 at 20 °C

bulk density

400‑600 kg/m3

anion traces

carbonate (CO32-): passes test
chloride (Cl-): ≤0.005%
nitrate (NO3-): passes test

cation traces

Fe: ≤ 0.001%
K: ≤ 0.005%
Mg: ≤ 0.01%
Na: ≤ 0.2%
Sr: ≤ 0.05%
heavy metals (as Pb): ≤ 0.002%

storage temp.

2-30°C

InChI

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

InChI key

PASHVRUKOFIRIK-UHFFFAOYSA-L

Related Categories

Analysis Note

Assay (complexometric): 99.0 - 102.0 %
Substances insoluble in hydrochloric acid: ≤ 0.01 %
Carbonate (CO₃): passes test
Chloride (Cl): ≤ 0.005 %
Nitrate (NO₃): passes test
Heavy metals (as Pb): ≤ 0.002 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.005 %
Mg (Magnesium): ≤ 0.01 %
Na (Sodium): ≤ 0.2 %
Sr (Strontium): ≤ 0.05 %

Legal Information

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

storage_class_code

13 - Non Combustible Solids

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service