1.04865

重铬酸钾

for analysis (max. 0.000001% Hg) EMSURE^® ACS,ISO

• 别名: 重铬酸钾, 重铬酸钾，焦铬酸钾
• 经验公式（希尔记法）: Cr₂K₂O₇
• CAS号: 7778-50-9
• 分子量: 294.18
• MDL號碼: MFCD00011367
• 分類程式碼代碼: 12352302
• 酶委員會索引編號: 231-906-6
• NACRES: NA.21

属性

• 等級: ACS reagent
• 品質等級: 300
• agency: reag. ISO
• 產品線: EMSURE^®
• 化驗: ≥99.9% (iodometric)
• 形狀: crystalline
• 效力: 90.5 mg/kg LD₅₀, oral (Rat); 1170 mg/kg LD₅₀, skin (Rat)
• 雜質: ≤0.005% Insoluble matter
• 損耗: ≤ 0.05% loss on drying, 105°C
• pH值: 3.6 (100 g/L in H₂O)
• bp: >500 °C/1013 hPa
• mp: 398 °C
• 密度: 2.7 g/cm³ at 20 °C
• 體積密度: 1250 kg/m³
• 負離子痕跡: chloride (Cl^-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• 正離子痕跡: Ca: ≤0.002%; Cu: ≤0.001%; Fe: ≤0.001%; Hg: ≤0.000001%; Na: ≤0.02%; Pb: ≤0.005%
• 儲存溫度: 2-30°C
• InChI: 1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1
• InChI 密鑰: KMUONIBRACKNSN-UHFFFAOYSA-N

说明

應用

• Coupling of gene regulation and carrier modification manipulates bacterial biofilms as robust living catalysts: This research explores the application of potassium dichromate as a catalyst in biotechnological processes, particularly in the modification of bacterial biofilms. These developments show significant promise for bioengineering, where robust living catalysts can play critical roles in industrial bioprocessing and environmental remediation (Yan CH et al., 2024).


• Exploring the synergistic effect of chromium (Cr) tolerant Pseudomonas aeruginosa and nano zero valent iron (nZVI) for suppressing Cr uptake in Aloe Vera: This study uses potassium dichromate to investigate the effects of chromium exposure on plants and the potential mitigating actions of bioremediation techniques. It highlights the importance of using potassium dichromate in environmental science to assess and develop strategies for managing heavy metal contamination in agriculture (Komal et al., 2024).


• Preparation and properties of oxidized multi-walled carbon nanotube superhydrophobic composites modified by bio-fatty acids: Potassium dichromate is used here as an oxidizing agent in the synthesis of advanced nanocomposite materials. These materials are significant for their applications in creating superhydrophobic surfaces, which have broad implications in material science and industrial manufacturing, particularly for coatings and environmental applications (Hao X et al., 2024).


• An internal filtration effect-based "off-on" probe for fluorescent and visual sensing of formaldehyde: In this research, potassium dichromate′s role as a chemical reagent in analytical methods is highlighted. It is used to develop sensitive and specific sensors for detecting hazardous substances like formaldehyde, underscoring its critical role in enhancing public health and safety protocols within laboratory and industrial settings (Fan W et al., 2024).

分析報告

含量测定（碘量滴定法）： ≥ 99.9 %
不溶物： ≤ 0.005 %
氯化物（Cl）： ≤ 0.001 %
硫酸盐（SO₄）： ≤ 0.005 %
Ca（钙）： ≤ 0.002 %
Cu（铜）： ≤ 0.001 %
Fe（铁）： ≤ 0.001 %
Hg（汞）： ≤ 0.000001 %
Na（钠）： ≤ 0.02 %
Pb（铅）： ≤ 0.005 %
干燥失重（105 °C）： ≤ 0.05 %

法律資訊

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

安全信息

• 象形圖: GHS03,GHS05,GHS06,GHS08,GHS09
• 訊號詞: Danger
• 危險聲明: H272 - H301 - H312 - H314 - H330 - H334 - H335 - H340 - H350 - H360FD - H372 - H410
• 防範說明: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• 危險分類: 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
• 標靶器官: Cardio-vascular system, Respiratory system
• 儲存類別代碼: 5.1B - Oxidizing hazardous materials
• 水污染物質分類（WGK）: WGK 3
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable