1.04864

Potassium dichromate

for analysis EMSURE^® ACS,ISO,Reag. Ph Eur

• Synonym(s): Potassium dichromate, Potassium bichromate, Potassium pyrochromate
• Empirical Formula (Hill Notation): Cr₂K₂O₇
• CAS Number: 7778-50-9
• Molecular Weight: 294.18
• MDL number: MFCD00011367
• UNSPSC Code: 12352302
• EC Index Number: 231-906-6
• NACRES: NA.21
• assay: ≥99.9% dry basis (iodometric)
• grade: ACS reagent
• form: crystalline
• solubility: 115 g/L

Properties

• grade: ACS reagent
• Quality Level: 300
• agency: reag. ISO; reag. Ph. Eur.
• product line: EMSURE^®
• assay: ≥99.9% dry basis (iodometric)
• form: crystalline
• potency: 90.5 mg/kg LD₅₀, oral (Rat); 1170 mg/kg LD₅₀, skin (Rat)
• impurities: ≤0.005% Insoluble matter
• loss: ≤0.05% loss on drying, 130 °C
• pH: 3.6 (100 g/L in H₂O)
• bp: >500 °C/1013 hPa
• mp: 398 °C
• solubility: 115 g/L
• density: 2.7 g/cm³ at 20 °C
• bulk density: 1250 kg/m³
• anion traces: chloride (Cl^-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• cation traces: Ca: ≤0.002%; Cu: ≤0.001%; Fe: ≤0.001%; Na: ≤0.02%; Pb: ≤0.005%
• storage temp.: 2-30°C
• SMILES string: [Cr](=O)(=O)([O-])O[Cr](=O)(=O)[O-].[K+].[K+]
• InChI: 1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1
• InChI key: KMUONIBRACKNSN-UHFFFAOYSA-N

Description

Application

• LC-HRMS methods for the quantification of two artemisinin drugs and their metabolites in rat blood and plasma.: This study develops a liquid chromatography-high resolution mass spectrometry (LC-HRMS) method using potassium dichromate as a calibration standard, significantly enhancing the accuracy and precision in pharmaceutical analysis (Zhou et al., 2024).
• A novel model extended from the Bouguer-Lambert-Beer law can describe the non-linear absorbance of potassium dichromate solutions and microalgae suspensions.: Research presents a novel mathematical model incorporating potassium dichromate, offering a more accurate method for assessing the optical properties of solutions, critical for analytical applications in bioengineering and environmental studies (Yeh et al., 2023).
• Melatonin Alleviated Potassium Dichromate-Induced Oxidative Stress and Reprotoxicity in Male Rats.: Investigates the protective effects of melatonin against oxidative stress caused by potassium dichromate in clinical settings, providing insights into its potential therapeutic applications (Bashandy et al., 2021).
• Assessing the acute and chronic toxicity of exposure to naturally occurring oil sands deposits to aquatic organisms using Daphnia magna.: Features a study on the environmental impact of potassium dichromate, providing essential data for environmental toxicology and pollution assessment (Cardoso et al., 2020).

Linkage

Replaces: PX1445-2; PX1445

Analysis Note

Assay (iodometric, calc. on dried substance): ≥ 99.9 %
Insoluble matter: ≤ 0.005 %
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Ca (Calcium): ≤ 0.002 %
Cu (Copper): ≤ 0.001 %
Fe (Iron): ≤ 0.001 %
Na (Sodium): ≤ 0.02 %
Pb (Lead): ≤ 0.005 %
Loss on drying (130 °C): ≤ 0.05 %

Legal Information

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

Safety Information

• pictograms: GHS03,GHS05,GHS06,GHS08,GHS09
• signalword: Danger
• hcodes: H272 - H301 - H312 - H314 - H330 - H334 - H335 - H340 - H350 - H360FD - H372 - H410
• pcodes: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - STOT RE 1 Inhalation - STOT SE 3
• target_organs: Cardio-vascular system, Respiratory system
• Storage Class: 5.1B - Oxidizing hazardous materials
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable