Merck
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1.02121

Supelco

Calcium nitrate tetrahydrate

for analysis EMSURE® ACS

Synonym(s):
Calcium nitrate tetrahydrate
Linear Formula:
Ca(NO3)2 · 4 H2O
CAS Number:
Molecular Weight:
236.15
MDL number:
EC Index Number:
233-332-1

Quality Level

grade

ACS reagent

product line

EMSURE®

assay

99.0-102.0% (complexometric)

form

solid

potency

3900 mg/kg LD50, oral (Rat)

impurities

≤0.005% Insoluble matter

pH

5.0-7.0 (25 °C, 50 g/L in H2O)

mp

45 °C

solubility

2710 g/L

density

1.82 g/cm3 at 20 °C

bulk density

1000 kg/m3

anion traces

chloride (Cl-): ≤0.005%
nitrite (NO2-): ≤0.001%
sulfate (SO42-): ≤0.002%

cation traces

Ba: ≤0.005%
Cu: ≤0.0002%
Fe: ≤0.0005%
K: ≤0.005%
Mg: ≤0.01%
Na: ≤0.01%
Sr: ≤0.01%
heavy metals: ≤0.0005%

storage temp.

2-30°C

InChI

1S/Ca.2HNO3.4H2O/c;2*2-1(3)4;;;;/h;2*(H,2,3,4);4*1H2/q+2;;;;;;

InChI key

DKCJOKYHYIAZQH-UHFFFAOYSA-N

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Related Categories

Linkage

Replaces: CX0255; CX0255-1; CX0255-20

Analysis Note

Assay (complexometric): 99.0 - 102.0 %
Insoluble matter: ≤ 0.005 %
pH-value (5 %; water; 25 °C): 5.0 - 7.0
Chloride (Cl): ≤ 0.005 %
Nitrite (NO₂): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.002 %
Heavy metals (ACS): ≤ 0.0005 %
Ba (Barium): ≤ 0.005 %
Cu (Copper): ≤ 0.0002 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.005 %
Mg (Magnesium): ≤ 0.01 %
Na (Sodium): ≤ 0.01 %
Sr (Strontium): ≤ 0.01 %
Corresponds to ACS

Legal Information

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

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 1

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