Ancestral City

I have always admired King Black Eyes. He feels like an alien has traveled through time. He has really great ideas. I really hope he can come back and write a book.

There is no chapter 3-4-6-7-9 😡.

Zhang Jie who mysteriously disappeared was so happy

Prussian Blue, or iron ferrocyanide, has the chemical formula Fe4[Fe(CN)6]3. It is a coordination compound that can be used for glazes, oil painting dyes, etc. Chinese name: Prussian Blue Foreign name: Prussian Blue Alias: Ferric ferrocyanide, Berlin blue, Chinese blue, tribute blue, iron blue. Chemical formula: Fe4[Fe(CN)6]3 Molecular weight: 859.228 CAS registration number: 14038-43-8 EINECS registration number: 237-875-5 Boiling point: 25.7 ℃ Water solubility: insoluble Density: 1.8 G/cm3 Appearance: dark blue crystalline powder. Application: Used for coloring paints, inks, crayons, painted paper, etc. Safety description: S22; S24/25. Hazard symbols: Xn; T; F; Xi. Hazard description: R40; R22; R10; R23/25; R11; R36/37/38. UN Dangerous Goods: 1993 No.: RTECS No.: LJ8200000 Customs Code: 29322910 Vapor Pressure: 740mmHg (at 25°C) LogP: 0.284 54 PSA: 428.22000 WGKGermany: 1 Brief history of research: In the 18th century, there was a German named Disbach. He was a worker who made and used paint, so he was interested in various colored substances. I always want to use cheap raw materials to make paints with good performance. On one occasion, Disbach mixed plant ash and cow blood for roasting, then leached the roasted material with water. After filtering out the insoluble substances, a clear solution was obtained. After the solution was evaporated, a yellow crystal precipitated. When Disbach put this yellow crystal into a solution of ferric chloride, a bright blue precipitate was produced. After further experiments, Disbach found that this blue precipitate turned out to be a paint with excellent performance. The reaction equation is: 3K4[Fe(CN)6]+ 4FeCl3 → Fe4[Fe(CN)6]3↓ + 12KCl. Disbach's boss was a businessman. He felt that this was a good opportunity to make money, so he kept the production method of this paint strictly secret and gave the pigment an elusive name - Prussian Blue in order to sell the paint at a high price. The uniforms of Germany's predecessor, the Prussian army, used this color. Even after the establishment of the Second German Empire in 1871, Prussian blue uniforms were still used for a long time until the eve of World War I when they were changed to earthy gray. It was not until 20 years later that some chemists understood what Prussian blue was and how to produce it. It turns out that plant ash contains potassium carbonate, and cow blood contains two elements, carbon and nitrogen. When these two substances react, potassium ferrocyanide can be obtained, which is the yellow crystal obtained by Disbach. Because it is made from cow blood and is a yellow crystal, more people call it yellow blood salt. After it reacts with ferric chloride, ferric ferrocyanide is obtained, which is Prussian blue. Physical properties: Prussian blue has a cubic structure, is stable at room temperature and pressure, is insoluble in water, and is soluble in acids and alkali. There are two kinds of color light: cyan light and red light. They are bright in color, strong in tinting power, and slightly poor in covering power. The powder is hard and difficult to grind. It is light-resistant and acid-resistant, but will decompose when boiled with concentrated sulfuric acid; it has weak alkali resistance and can be decomposed even by dilute alkali, and cannot be used with alkaline pigments. In case of fire, water and sand can be used to put out the fire. Preparation method: Yellow blood salt method: Use yellow blood salt potassium and ferrous sulfate to react in a slightly acidic solution to form a double salt of ferrous ferrocyanide, and then add potassium chlorate sulfate to oxidize it to form a double salt of ferric ferrocyanide and potassium ferrocyanide: . If sodium yellow blood salt is used to make iron blue, the sodium in the resulting double salt must be replaced by ammonium, that is, the double salt of iron ferrocyanide and ammonium ferrocyanide is generated. Therefore, iron blue is divided into potassium iron blue and ammonium iron blue according to different raw materials. The above double salt is filtered, rinsed, dried and pulverized to obtain dark blue iron blue pigment. Main applications: In chemical experiments, the reaction that generates Prussian blue is commonly used to test CN-: FeSO4+ 6NaCN +2Na4[Fe(CN)6]+ 4FeCl3= Fe4[Fe(CN)6]3 ↓ + 12NaCl+ Na2SO4. In medical treatment, thallium can replace iron on Prussian blue and form insoluble substances, which are excreted with the feces. It has certain effects on the treatment of acute and chronic oral thallium poisoning. The dosage is generally 250mg/kg per day, divided into 4 times, dissolved in 50mL of 15% mannitol and taken orally. (Appropriate supplementation of potassium chloride. High potassium can increase the clearance of thallium by the kidneys. This may be related to potassium competitively blocking the absorption of thallium by the renal tubules. At the same time, potassium can mobilize intracellular thallium to the outside of the cells, increasing the blood thallium content, which can aggravate the clinical condition, so it should be used with caution.) Storage method: Prussian blue should be stored in a ventilated, dry warehouse. Avoid contact with oxides, acids, ammonia, and light during storage. Related controversy: Fe reacts with [Fe(CN)6]4- to produce a dark blue precipitate, which is called Prussian blue; while the reaction of Fe with [Fe(CN)6]3- produces a dark blue precipitate, which is called Teng's blue. Both products exhibit a similar color (blue) and contain exactly the same chemical elements and formula. One view is that because these two substances have exactly the same complex structure, and have been measured by X-rays, magnetic susceptibility, photoelectron spectroscopy and Mössbauer spectroscopy, their properties are the same or basically the same, and they can be considered to be the same substance. Another view is that although Prussian blue and Teng's blue have the same structure, Prussian blue is always slightly darker than Teng's blue. After comparing the Mössbauer spectra of the two substances, it was found that their electronic structures are slightly different, thus causing the difference in color. In short, Prussian blue and Teng's blue are consistent in their chemical formulas and complex structures. There is still controversy as to whether they are the same substance.

Thallium bromide is an inorganic compound with the chemical formula TlBr. It is a yellow-white crystalline powder, slightly soluble in water, soluble in ethanol, and insoluble in acetone. It is mainly used to make drugs. Chinese name: Thallium bromide. Foreign name: thallium bromide. Alias: Thallium monobromide, thallium bromide. Chemical formula: TlBr Molecular weight: 284.287. CAS registration number: 7789-40-4. EINECS registration number: 232-163-0. Boiling point: 815 ℃. Water solubility: slightly soluble. Density: 7.5 G/cm3. Appearance: yellow-white crystalline powder. Safety description: S13; S28; S45; S61. Hazard symbols: T+; N. Hazard description: R26/28; R33; R51/53. Physical and chemical properties: Density: 7.5G/cm3. Boiling point: 815 °C. Saturated vapor pressure: 1.33KPa (522℃). Appearance: yellow-white crystalline powder. Solubility: Slightly soluble in water, soluble in ethanol, insoluble in acetone. Uses: Mainly used for manufacturing drugs. Emergency response to leakage: Isolate the leakage contaminated area and restrict access. It is recommended that emergency responders wear dust masks (full face masks) and protective clothing. Do not come into direct contact with spilled material. Small leakage: avoid dust and use a clean shovel to collect in a dry, clean, covered container. Large spills: Cover with plastic sheeting or canvas. Then collect it for recycling or transport it to a waste disposal site for disposal. Protective measures: Respiratory protection: Isolation respirators must be worn when there is possible contact with its dust. During emergency rescue or evacuation, it is recommended to wear air respirators. Eye protection: Protection has been included in respiratory protection. Body protection: Wear a one-piece tape-type anti-virus suit. Hand protection: Wear rubber gloves. Other protection: Smoking, eating and drinking are prohibited at the work site. After work, shower and change clothes. Implement pre-employment and periodic physical examinations. The workshop should be equipped with first aid equipment and medicines. First aid measures: Skin contact: Take off contaminated clothing and wash skin thoroughly with soap and water. Eye contact: Lift eyelids and rinse with running water or saline. Seek medical attention. Inhalation: Leave the scene quickly to fresh air. Keep your airway open. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. Seek medical attention. Ingestion: Drink enough warm water to induce vomiting. Give 60mL of 1% potassium iodide by gavage. Gastric lavage. Seek medical attention. Operating handling, storage and transportation: Operating precautions: Close tightly and provide adequate local exhaust and comprehensive ventilation. Operators must undergo special training and strictly abide by operating procedures. It is recommended that operators wear isolation respirators, jumpsuit-type tape respirators, and rubber gloves. Avoid dust generation. Avoid contact with oxidants and acids. When handling, load and unload with care to prevent damage to packaging and containers. Equipped with leakage emergency treatment equipment. Empty containers may contain harmful residues. Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. The packaging is sealed. They should be stored separately from oxidants, acids, and food chemicals, and avoid mixed storage. Suitable materials should be available in the storage area to contain spills. The "five pairs" management system for extremely toxic substances should be strictly implemented. Transportation Notes: During railway transportation, the dangerous goods assembly table in the "Dangerous Goods Transport Rules" of the Ministry of Railways should be strictly followed. Before transportation, check whether the packaging container is complete and sealed. During transportation, make sure that the container does not leak, collapse, fall, or be damaged. It is strictly prohibited to mix with acids, oxidants, food and food additives. During transportation, the transport vehicle should be equipped with leakage emergency treatment equipment. During transportation, they should be protected from exposure to the sun, rain, and high temperatures. Safety Information: Safety Terms: S13: Keep away from food, drink and animal feeding stuffs. Keep away from food, drink and animal feeding stuffs. S28: After contact with skin, wash immediately with plenty of... (To be specified by the manufacturer). After contact with skin, wash immediately with plenty of... (To be specified by the manufacturer). S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). S61：Avoid release to the environment. Refer to special instructions/Safety data sheets. Avoid release to the environment. Refer to special instructions/Safety data sheets. Risk terms: R26/28: Very toxic by inhalation and if swallowed. Extremely toxic by inhalation and if swallowed. R33: Danger of cumulative effects. Danger of cumulative effects. R51/53: Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.

Two

Chapters 3 and 4 are really good, so they're gone.

The novel is very beautiful! From chapter 24 onwards, it's so exciting! ! Don't stop reading at the beginning, be sure to keep reading! The novel of King of Black Eyes is unmistakable! ! ❤️🤝✊

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The Black Eyed King is one of the people who are receiving the most attention. You want to know why? Dreams will tell you the answer

This setting is completely illogical, I can't see it