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255548

Sigma-Aldrich

Calcium sulfate dihydrate

ACS reagent, 98%

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Linear Formula:
CaSO4 · 2H2O
CAS Number:
Molecular Weight:
172.17
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NB.24

grade

ACS reagent

Quality Level

assay

98%
98.0-102.0% (ACS specification)

form

powder

impurities

≤0.02% insol. dil. HCl

anion traces

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

cation traces

Fe: ≤0.001%
K: ≤0.005%
Mg: ≤0.02%
Na: ≤0.02%
Sr: ≤0.05%
heavy metals: ≤0.002% (by ICP-OES)

SMILES string

O.O.[Ca++].[O-]S([O-])(=O)=O

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

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1 of 4

This Item
12056C37711.93636
vibrant-m

255548

Calcium sulfate dihydrate

Essential Grade
vibrant-m

12056

Calcium sulfate dihydrate

Essential Grade
vibrant-m

C3771

Calcium sulfate dihydrate

-
vibrant-m

1.93636

Calcium sulfate dihydrate

-
Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

-

form

powder

form

powder

form

powder

form

(precipitated)

cation traces

Fe: ≤0.001%, Mg: ≤0.02%, Sr: ≤0.05%, K: ≤0.005%, heavy metals: ≤0.002% (by ICP-OES), Na: ≤0.02%

cation traces

As: ≤3 mg/kg, Fe: ≤50 mg/kg, Hg: ≤10 mg/kg, Pb: ≤5 mg/kg, Se: ≤30 mg/kg

cation traces

-

cation traces

-

impurities

≤0.02% insol. dil. HCl

impurities

residual solvents, in accordance, ≤0.001% heavy metals (as Pb)

impurities

-

impurities

-

anion traces

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

anion traces

chloride (Cl-): ≤100 mg/kg, fluoride (F-): ≤30 mg/kg

anion traces

-

anion traces

-

General description

Calcium sulfate dihydrate, also known as gypsum, is a hydrated form of calcium sulfate. It is used as a thermal insulator because of its low thermal conductivity.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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Bram M Borkent et al.
The Journal of the Acoustical Society of America, 121(3), 1406-1412 (2007-04-06)
The study of cavitation inception in liquids rarely yields reproducible data, unless special control is taken on the cleanliness of the experimental environment. In this paper, an experimental technique is demonstrated which allows repeatable measurements of cavitation activity in liquid-particle
Crystallization of calcium sulfate dihydrate in the presence of some metal ions.
Hamdona SK and Al Hadad UA.
Journal of Crystal Growth, 299(1), 146-151 (2007)
Calcium sulfate dihydrate (gypsum) scale formation on heat exchanger surfaces: The influence of scale inhibitors.
Amjad Z.
Journal of Colloid and Interface Science, 123(2), 523-536 (1988)
The crystallization of calcium sulfate dihydrate.
Smith BR and Sweett F.
Journal of Colloid and Interface Science, 37(3), 612-618 (1971)
K N Lewis et al.
Journal of materials science. Materials in medicine, 17(6), 531-537 (2006-05-13)
Calcium sulfate (CS) is one of the oldest bone graft materials still in use. Its main limitations are poor handling characteristics, poor mechanical properties, and a resorption rate that is too fast for some applications. The present study investigated the

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