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12056

Sigma-Aldrich

Calcium sulfate dihydrate

puriss., meets analytical specification of NF, E 516, 99.0-101.0% (based on anhydrous substance)

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Linear Formula:
CaSO4 · 2H2O
CAS Number:
Molecular Weight:
172.17
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

puriss.

Quality Level

Assay

99.0-101.0% (based on anhydrous substance)

form

powder

quality

meets analytical specification of NF, E 516

impurities

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

loss

19.0-23.0% loss on drying, 250 °C

anion traces

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

cation traces

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

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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This Item
120102092013143
Calcium sulfate dihydrate puriss., meets analytical specification of NF, E 516, 99.0-101.0% (based on anhydrous substance)

Sigma-Aldrich

12056

Calcium sulfate dihydrate

Essential Grade
Calcium carbonate puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E170, precipitated, 98.5-100.5% (based on anhydrous substance)

Sigma-Aldrich

12010

Calcium carbonate

Essential Grade
Cadmium sulfate 8/3-hydrate puriss. p.a., ACS reagent, ≥99.0% (calc. based on CdSO4 · 8/3 H2O, KT)

Sigma-Aldrich

20920

Cadmium sulfate 8/3-hydrate

Essential Grade
assay

99.0-101.0% (based on anhydrous substance)

assay

98.5-100.5% (based on anhydrous substance)

assay

≥99.0% (calc. based on CdSO4 · 8/3 H2O, KT)

assay

99.0-101.0% MgSO4 basis (in dried substance)

form

powder

form

powder

form

powder or crystals

form

powder

impurities

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

impurities

organic volatile impurities, complies, residual solvents, complies, ≤0.002% heavy metals (as Pb), ≤0.2% insoluble in acid (CH3COOH), ≤0.2% insoluble in hydrochloric acid, ≤1% alkali-, Mg-ions (as SO4)

impurities

≤0.005% insoluble matter in H2O

impurities

acidity or alkalinity, complies, residual solvents, complies, ≤0.0015% heavy metals (as Pb)

anion traces

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

anion traces

chloride (Cl-): ≤200 mg/kg, fluoride (F-): ≤50 mg/kg, sulfate (SO42-): ≤2000 mg/kg

anion traces

chloride (Cl-): ≤10 mg/kg, nitrate and nitrite (as NO3-): ≤30 mg/kg

anion traces

chloride (Cl-): ≤400 mg/kg

cation traces

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

cation traces

As: ≤2 mg/kg, Ba:, in accordance, Cu: ≤10 mg/kg, Fe: ≤200 mg/kg, Hg: ≤0.5 mg/kg, Pb: ≤3 mg/kg, Zn: ≤10 mg/kg

cation traces

As: ≤2 mg/kg, Ca: ≤50 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤10 mg/kg, Pb: ≤20 mg/kg, Zn: ≤50 mg/kg

cation traces

As: ≤2 mg/kg, Fe: ≤10 mg/kg

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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The crystallization of calcium sulfate dihydrate.
Smith BR and Sweett F.
Journal of Colloid and Interface Science, 37(3), 612-618 (1971)
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)
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
Andreas Ender et al.
The Journal of prosthetic dentistry, 109(2), 121-128 (2013-02-12)
A new approach to both 3-dimensional (3D) trueness and precision is necessary to assess the accuracy of intraoral digital impressions and compare them to conventionally acquired impressions. The purpose of this in vitro study was to evaluate whether a new
Dominique Claveau-Mallet et al.
Water research, 47(4), 1512-1520 (2013-01-12)
The objective of this work was to evaluate the capacity of steel slag filters to treat a gypsum mining leachate containing 11-107 mg P/L ortho-phosphates, 9-37 mg/L fluoride, 0.24-0.83 mg/L manganese, 0.20-3.3 zinc and 1.7-8.2 mg/L aluminum. Column tests fed

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