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1.02481

Supelco

Chromium(III) nitrate nonahydrate

for analysis EMSURE®

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Synonym(s):
Chromium(III) nitrate nonahydrate, Chromic Nitrate
Linear Formula:
Cr(NO3)3 · 9H2O
CAS Number:
Molecular Weight:
400.15
MDL number:
EC Index Number:
236-921-1

Quality Level

product line

EMSURE®

assay

≥98.0% (iodometric)

form

solid

potency

3250 mg/kg LD50, oral (Rat)

impurities

≤0.05% Substances not precipitated by ammonia (as sulfates)

pH

2-3 (20 °C, 50 g/L in H2O)

mp

36-37 °C

solubility

810 g/L

bulk density

710 kg/m3

anion traces

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

cation traces

Cu: ≤0.001%
Fe: ≤0.01%
NH4+: ≤0.002%

storage temp.

15-25°C

InChI

1S/Cr.3NO3/c;3*2-1(3)4/q+3;3*-1

InChI key

PHFQLYPOURZARY-UHFFFAOYSA-N

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Chromium(III) nitrate nonahydrate for analysis EMSURE®

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Chromium(VI) oxide for synthesis

8.22266

Chromium(VI) oxide

assay

≥98.0% (iodometric)

assay

99.0-101.0% (complexometric)

assay

≥99.99% trace metals basis

assay

-

solubility

810 g/L

solubility

-

solubility

H2O: very soluble(lit.)

solubility

-

Quality Level

300

Quality Level

300

Quality Level

-

Quality Level

200

pH

2-3 (20 °C, 50 g/L in H2O)

pH

1.3 (20 °C, 100 g/L in H2O)

pH

-

pH

<1 (20 °C, 100 g/L in H2O)

impurities

≤0.05% Substances not precipitated by ammonia (as sulfates)

impurities

≤0.005% Insoluble matter, ≤0.1% Substances not precipitated by ammonia (as sulfate), ≤0.3% Free acid (as HNO3)

impurities

≤100.0 ppm Trace Metal Analysis

impurities

-

Analysis Note

Assay (iodometric): ≥ 98.0 %
pH-value (5 %; water): 2.0 - 3.0
Chloride (Cl): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.005 %
Cu (Copper): ≤ 0.001 %
Fe (Iron): ≤ 0.01 %
NH₄ (Ammonium): ≤ 0.002 %
Substances not precipitated by ammonia (as sulfates): ≤ 0.05 %

Legal Information

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

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Warning

Hazard Classifications

Aquatic Chronic 3 - Eye Irrit. 2 - Ox. Sol. 3 - Skin Irrit. 2 - Skin Sens. 1B

Storage Class

5.1B - Oxidizing hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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