1.05067

Potassium nitrite

cryst. for analysis EMSURE^® ACS

• Synonym(s): Potassium nitrite
• Empirical Formula (Hill Notation): KNO₂
• CAS Number: 7758-09-0
• Molecular Weight: 85.10
• MDL number: MFCD00011408
• UNSPSC Code: 12352302
• EC Index Number: 231-832-4
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 300
• 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 (SO₄^2-): ≤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
• InChI: 1S/K.HNO2/c;2-1-3/h;(H,2,3)/q+1;/p-1
• InChI key: BXNHTSHTPBPRFX-UHFFFAOYSA-M

Description

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

Legal Information

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

Safety Information

• pictograms: GHS03,GHS06,GHS09
• signalword: Danger
• hcodes: H272 - H301 - H400
• pcodes: P210 - P220 - P264 - P273 - P280 - P301 + P310
• Hazard Classifications: Acute Tox. 3 Oral - Aquatic Acute 1 - Ox. Sol. 2
• Storage Class: 5.1B - Oxidizing hazardous materials
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable