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Merck

1.05067

Potassium nitrite

cryst. for analysis EMSURE® ACS

Synonym(s):

Potassium nitrite

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About This Item

Empirical Formula (Hill Notation):
KNO2
CAS Number:
Molecular Weight:
85.10
UNSPSC Code:
12352302
EC Index Number:
231-832-4
NACRES:
NA.21
MDL number:
assay:
≥97.0% (cerimetric)
grade:
ACS reagent
form:
solid
solubility:
2810 g/L

Product Name

Potassium nitrite, cryst. for analysis EMSURE® ACS

SMILES string

[K+].N(=O)[O-]

InChI

1S/K.HNO2/c;2-1-3/h;(H,2,3)/q+1;/p-1

InChI key

BXNHTSHTPBPRFX-UHFFFAOYSA-M

grade

ACS reagent

product line

EMSURE®

assay

≥97.0% (cerimetric)

form

solid

impurities

≤0.01% Insoluble matter

pH

7-10 (20 °C, 50 g/L in H2O)

mp

407 °C

solubility

2810 g/L

density

1.92 g/cm3 at 20 °C

bulk density

980 kg/m3

anion traces

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

cation traces

Ca: ≤0.003%
Fe: ≤0.0005%
Mg: ≤0.002%
Na: ≤0.5%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

Quality Level

Analysis Note

Assay (cerimetric): ≥ 97.0 %
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water): 7.0 - 10.0
Chloride (Cl): ≤ 0.005 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
Ca (Calcium): ≤ 0.003 %
Fe (Iron): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.002 %
Na (Sodium): ≤ 0.5 %
Corresponds to ACS

Application

  • Suitability evaluation of new endogenous biomarkers for the identification of nitrite-based urine adulteration in mass spectrometry methods.: This paper assesses novel biomarkers for spotting urine tampering using potassium nitrite, critical for maintaining integrity in analytical testing scenarios (Steuer et al., 2019).
  • 2-Nitro-6-monoacetylmorphine: potential marker for monitoring the presence of 6-monoacetylmorphine in urine adulterated with potassium nitrite.: Introduces a potential marker for detecting adulteration in urine tests, essential for chemists focused on drug testing accuracy (Luong et al., 2012).

Legal Information

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

signalword

Danger

Hazard Classifications

Acute Tox. 3 Oral - Aquatic Acute 1 - Ox. Sol. 2

Storage Class

5.1B - Oxidizing hazardous materials

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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