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
grade
ACS reagent
Quality Segment
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
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
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).
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
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
Legal Information
EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany
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Signal Word
Danger
Hazard Codes
Precautionary Statements
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
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