Sodium Sulphide Solid role

Sodium Sulphide Solid, inorganic compounds, also known as stink alkali, soda smelly, yellow alkali, sodium sulfide. Pure sodium sulfide is a colorless crystalline powder. Strong moisture absorption, soluble in water. Solution is strongly alkaline reaction. Contact with skin and hair will cause burns. Therefore, commonly known as sodium sulfide sulfide. Aqueous sodium sulfide in the air will slowly oxidize thiosulfate, sodium sulfite, sodium sulfate and sodium polysulfide. As faster generation of sodium thiosulfate, the main product of oxidation is sodium thiosulfate. Sodium sulfide in the air deliquescence, and carbonated and deterioration, constantly release hydrogen sulfide gas. Industrial sodium sulfide containing impurities its color was pink, brown, khaki. Weight, melting point, boiling point, but also due to impurities varies.
Role purpose:
1 dye industry for the production of sulfur, hydrogen sulfide and sulfide blue material;
2 dissolved sulfur dyeing industry as a co-agent;
3 tanning industry for the hydrolysis of rawhide hair removal, but also for the preparation of polysulfide to accelerate the soaking of dry skin soft. Paper and paper industry as a cooking agent;
4 rayon denitration for the textile industry and the reduction of nitro compounds, as well as cotton fabric dyeing mordant;
5 pharmaceutical industry for the production of phenacetin and other antipyretic drugs. In addition, for the system sodium thiosulfate, sodium hydrosulfide, sodium sulfide and more.


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Sodium Tripolyphosphate (Food Gra) the nature and indications

Properties: Sodium Tripolyphosphate (Food Gra), also known as trisodium phosphate. Significant twelve hydrate and anhydrate. Anhydrous as white crystals. Density 2.536g/cm3. Melting point 1340 ℃. Twelve monohydrate is a colorless cubic crystal or white powder. Density 1.62g/cm3. Melting point 73.3 ℃. 76.7 ℃ decomposition. Heated to 100 ℃ 12 crystal water loss from anhydrous. In dry air easily weathered. Are soluble in water, solubility in 20 °-120g / L; 30 degrees-163g / L. Its solution is strongly alkaline. Not soluble in carbon disulfide and ethanol. Of phosphoric acid with sodium carbonate and the reaction solution, control the pH value of 8 to 8.4, after the filtered cake residue, the filtrate was concentrated, so that the liquid caustic soda Na / P ratio of 3.24 to 3.26, and then by cooling and crystallization, solid separated, dried and prepared. Anhydrous sodium phosphate dodecahydrate based crystals were dissolved in the heated to 85 ~ 90 ℃ of water (10% to 15%), after dehydration in the system. Can be used as soft water and detergents, boiler scale inhibitor, the fixing toner printing, silk fabric enhancer, metal corrosion inhibitor and metal rust inhibitors, enamel flux and the production of bleaching agents, the system the rawhide leather degreasing agent and degumming agents. Food grade phosphate dodecahydrate emulsifiers used in food processing, quality improver, nutritional supplements, and food with a bottle (tank) of the detergent.
Indications: polycythemia vera, essential thrombocythemia, chronic myelogenous leukemia, chronic lymphocytic leukemia, as well as to identify the nature of superficial tumors, but also for neurodermatitis, chronic eczema, capillary tumors, keloids, winging pterygium, corneal neovascularization, plasma cell tumors of the applicator treatment.


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A brief history of the discovery of Sulphur

Sulfur (Sulphur) is a non-metallic element, chemical symbol is S, atomic number is 16. Sulfur Sulphur is a very common nonmetallic tasteless, pure sulfur is yellow crystals, also known as sulfur. In nature it is often in the form of sulfide or sulfate, pure sulfur in volcanic areas are also appearing in nature. It is an integral part of many amino acids. Mainly used in fertilizers, gunpowder, lubricants, pesticides and the production of anti-fungal agents. Generating combustion of sulfur dioxide in the air with oxygen and water to form sulfuric acid, causing acid rain.
Around 4,000 years ago, the Egyptians would have been formed by the combustion of sulfur dioxide to bleach cloth, the ancient Greeks and Romans also be proficient in the use of sulfur dioxide fumigation and bleaching. The ninth century BC, the Roman poet Homer in his writings about the sulfur burning when disinfecting and bleaching effect.
In ancient China, the first pharmaceutical monograph "Shen Nong's Herbal Classic" [1], contained in the animals, plants and minerals up to 365 kinds of medicines, contained 46 kinds of minerals in drugs, there are stone sulfur (ie sulfur). In this book there is also pointed out: "Stone sulfur can turn Yellow Gold iron, strange things." This shows that the sulfur was already known to work with copper, iron and other metals to form metal sulfides directly. World's oldest extant writings alchemy - Wei Boyang of the "Kinship" [2], but also chronicles the sulfur and volatile mercury can be less volatile mercury sulfide synthesis. Chinese study for gunpowder, probably began in the seventh century AD. Then black gunpowder gunpowder, which is composed of potassium nitrate, sulfur and charcoal composed of three. Sulfur is an important component of black powder was.
With the 1746 British J.Roebuck lead chamber method invented in 1777 manufacture of sulfuric acid and sulfur by the French ALLavoisier recognized as an element, the sulfur will enter the gates of modern chemistry. After this time, the sulfur is fast becoming the modern chemical industry and the modern chemical industry is closely related to one of the most important elements. Latin name Surphur estimates of sulfur from India Sanskrit Sulvere, the original meaning is bright yellow.


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Zinc Oxide 99.7% of the usage history

Zinc oxide (ZnO), commonly known as zinc white, a zinc oxide. Insoluble in water, soluble in acid and alkali. Zinc oxide is a commonly used chemical additives, is widely used in plastics, silicate products, synthetic rubber, lubricants, paints, ointments, adhesives, food, batteries, flame retardants and other products production. Zinc oxide bandgap and a large exciton binding energy, high transparency, excellent performance often Wen Faguang in the semiconductor field of liquid crystal display, thin film transistors, light emitting diodes and other products are applied. Furthermore, zinc oxide fine particles as a nano-material in the relevant fields have begun to play a role.
Using History
Early humans learned to use it as a paint or zinc oxide topical medicine, but the history of mankind discovered zinc oxide has been difficult to trace.
In ancient Indian medicine book "Chakra The collection" describes a zinc oxide after being identified as a drug, used to treat eye diseases and injuries. 1st century AD Greek physician Dioscorides Clerides also mentioned to do with zinc oxide ointment. Avicenna completed in 1025, "Hui prescription" will be described as zinc oxide to treat various skin disorders, including skin cancer drug of choice. Nowadays, people are no longer using zinc oxide cure skin cancer, it is still widely used to treat other common skin disorders.
Romans as early as 200 BC, they learn how to use copper and zinc ore containing zinc oxide reaction produced brass. Zinc oxide zinc in the shaft furnace turned into steam, rolled into the flue react. Dioscorides Clerides also been introduced to this.
12th century onwards, the Indians know the zinc and zinc, and began using zinc smelting original way. Zinc smelting technology was introduced to China in the 17th century. 1743, Bristol, England, established the first European zinc smelting factory.
Another major use of zinc oxide is used as a coating, known as zinc white. In 1834, zinc white first became watercolor paints, but zinc white insoluble oil. But soon the problem of zinc oxide produced by the new process solutions. In 1845, in Paris, Leclerc began mass production of zinc white oil paint, to 1850, zinc white became popular throughout Europe. High purity zinc white, so that in the 19th century, some artists in painting painted zinc white as a background, however, after a hundred years later, these paintings are showing cracks.
In the latter half of the 20th century, zinc oxide is used in the rubber industry. In the 1970s, the second largest use of zinc oxide is copy paper additives, but in the 21st century, zinc oxide additive approach for copy paper has been eliminated.

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Shipbuilding Plate Background and uses

Shipbuilding Plate refers to special structural steel shipbuilding production for the manufacture of the ocean, coastal and inland navigation ship hull structure steel sheets and thick steel plate.

Background:
Since 2011, the international shipping market downturn, shipbuilding overcapacity, resulting in the shipbuilding industry has entered a "winter period."
Experts pointed out that the international financial crisis, the impact of lag, shipbuilding real crisis has only just arrived, the current new orders declined significantly impact the next three years will be gradually upgraded. Authoritative data show that the first three quarters of last year, about 30% of the national shipyard did not receive new orders and new ship prices than last year before the financial crisis Heavy 30% -40%. Let shrinking shipbuilding shipbuilding plate market also suffered a weakness.

Purpose:
Shipbuilding plate is mainly used for domestic shipbuilding industry. Shipbuilding plate by different rolling equipment production, China's shipbuilding plate production with the development of shipbuilding industry composition is also changing, due to the different properties of the products rolling equipment there is a difference, shipbuilding plate prices are not the same, and in a certain market supply and demand environment more clearly reflected.


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Tool Steel (51-100) in a carbon tool steel

Tool Steel (Tool Steel (51-100)), is used to manufacture cutting tools, measuring tools, dies and wear-resistant tool steel. Tool steel with high hardness and high temperature can maintain high hardness and red hardness, and high wear resistance and appropriate toughness. Tool steel is generally divided into carbon tool steel, alloy tool steel and high speed tool steel.
Carbon tool steel carbon mass fraction is higher, at 0.65-1.35%, and their organizations are hypoeutectoid, or eutectoid eutectoid steel. Carbon tool steel heat treated to receive a higher surface hardness and wear resistance, the center has good toughness; annealed low hardness (less than HB207), good processing properties. But its red hardness difference, when the working temperature up to 250 ℃, the hardness and wear resistance of a sharp decline, down to HRC60 hardness below the hardenability of these steels is low. Larger tools can not hardenability (water quenching diameter of 15mm), water quenched when the center of the surface hardened layer with hardness vary greatly. Makes the tool easy to produce deformation during quenching. Or the formation of cracks addition, the quenching temperature range is narrow, the quenching temperature should be strictly controlled. Prevent overheating, decarburization and deformation.



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What is Flourspar Powder？

Flourspar Powder halide minerals. The main components of calcium fluoride of the formula CaF2. In the ultraviolet ray irradiation or a cathode, blue green fluorescence. Sometimes yttrium and cerium rare earth elements. Equiaxed crystal, crystal often cube, octahedron, rhombic dodecahedron and so on. Collection of dense granular or lumpy. Often has green, blue or purple, or colorless and transparent. Vitreous luster, Mohs hardness 4, a completely octahedral cleavage. Specific gravity 3.18. Mainly in hydrothermal veins. Often associated with sphalerite, galena symbiosis. Colorless fluorite in granitic pegmatite veins or fluorite crystal cave. Preparation of hydrofluoric acid is the main raw material, also used as enamel, glass, cement manufacturing ingredients and metallurgical industry flux, and as a rocket fuel catalyst. Colorless, transparent optical lens can be made by. China is the largest country in the world fluorspar production, the main origin of Zhejiang, Hunan and Fujian. The world's major origin of South Africa, Mongolia, the United States, Russia, Thailand and Spain.

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What is Fluorspar Lumps?

Fluorite is the industry's main source of fluorine, which is widely used in aerospace, refrigeration, pharmaceuticals, corrosion, fire, electrical, mechanical, and nuclear and other fields. Fluorite resource-rich country, many deposits, reserves, production and export volume ranking first in the world.
Fluorite, also known as fluorspar（Fluorspar Lumps）, is the industry's main source of fluorine, the world's 20 several important non-metallic mineral raw materials. Pure colorless fluorite can be used as an optical material, beautiful color fluorite gem stone and also as arts and crafts carving raw materials. Fluorite is fluorine chemical industry's basic raw materials, its products are widely used in aerospace, aviation, refrigeration, pharmaceuticals, pesticides, anti-corrosion, fire, electronics, electrical, mechanical and nuclear and other fields. With the continuous development of technology and the economy, fluorite has become an important modern industrial mineral raw materials, many developed countries regard it as an important strategic material for reserves. Chinese fluorite resource-rich, widely distributed, many deposit types, resources, reserves, production and export volume ranking first in the world. Ancient Indians found that there is a small hill on the Cobra particularly large, they are always wandering around in a big rock. One of the natural phenomena cause people to explore the mysteries of interest. Originally, when night fell, where the big stone slightly blue light flashes, and many insects have phototaxis stone would have come to light over the flying frog jumped out to competing predator insects, hiding not far from the Cobra have also come predation frog. Thus, the people of this stone is called "Snake Eyes Stone." Later learned that Snake Eyes is fluorite stone.
The ingredient is calcium fluoride fluorite, also known as fluorspar, Fei stone, because it contains a variety of rare elements and often has purple, green, light blue, colorless and transparent fluorite rare and precious. There are crystal cube, octahedron or rhombic dodecahedron. If put into the ultraviolet fluorescent fluorite according to a photo, it will issue a beautiful fluorescence.
The use of fluorite and its processed products have been involved in more than 30 industrial sectors. Fluorite added steel refining, can improve the melt fluidity of sulfur and phosphorus to remove harmful impurities.
Half of the world for the manufacture of fluorite production of hydrofluoric acid, the development of manufacturing Cryolite for aluminum smelting industry. The fridge coolant (Freon) to use fluorite; 1986, China's first generation of artificial blood should be used fluorite. Scientists are developing fluoride glass optical fiber communication may produce a new material that can pass through 20,000 kilometers wide in the Pacific instead of being re-issued station.
Production throughout the world. Fluorite Fluorite, also known as fluorspar, chemical composition of CaF2, crystals are equiaxed halide minerals. In the ultraviolet ray irradiation or heating the cathode when the blue or violet fluorescence, and hence the name. Crystal appearing cube, octahedron, or cube interspersed twins, collection of granular or lumpy. Light green, purple or colorless, transparent, sometimes red roses, white streak, vitreous luster, transparent to opaque. Octahedral cleavage completely. Mohs hardness is 4, the proportion of 3.18. Fluorite is mainly produced in hydrothermal veins. Colorless fluorite crystals in granitic pegmatite veins or fluorite crystal cave. World's total reserves of about 1 billion tons of fluorite, China is the world's one of the largest mineral fluorite, and accounted for 35% of world reserves, according to archaeological excavations that, seven thousand years ago, Zhejiang Yuyao Hemudu people, has selected the firefly stone as decorations. Hemudu fluorite mine south indeed exist. Mainly in Zhejiang, Hunan, Fujian and other places. World's other major origin of South Africa, Mexico, Mongolia, Russia, the USA, Thailand, Spain and other places. Fluorite flux used in the metallurgical industry, in the chemical industry raw material for the manufacture of hydrofluoric acid.


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Lead Ore is an important ore minerals refined lead

Lead Ore is an important ore minerals refined lead, lead is blue-gray metal, the new fracture with brilliant metallic luster. The solid state density is 11.35 g / cm 3, a melting point of 327.4 ℃, boiling point of 1525 ℃, pure lead metal is the most flexible, Mohs hardness of 1.5. Lead has good malleability, ductility but very small, intolerant tension. Very low thermal conductivity of lead, equivalent to 7.5% of silver, conductivity is very poor, and only 7.77% of silver.
Lead with high chemical stability, in dry air at room temperature when no chemical changes. Lead soluble in dilute nitric acid, sulfuric acid at room temperature and hydrochloric acid insoluble lead. Hydrochloric acid and sulfuric acid at room temperature only role and lead surfaces, as PbCl2 and PbS04 generated virtually insoluble, attached to the lead on the surface of the internal metal from corrosion. Lead and alkali, ammonia, chlorine solution and organic acids, esters are not react.
Because lead is acid and alkali corrosive nature, wider use, if we can use him to manufacture various components of chemical equipment, metallurgical plant cell, communication cable sheathing materials, as well as doing batteries, etc.; also be made Babbitt alloy I-lead bearing alloy of lead can absorb radioactive rays, it is used X-ray industrial and nuclear industry, lead compounds used in paints, ceramics, glass, rubber, petroleum refining and other industries can be used for solder, printed alloy.


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Nickel Ore related presentations

Known Nickel Ore about 50 species. Where sulfides such as pentlandite, nickel-iron and other purple sulfur exists in the form of free nickel sulfide, a considerable part of nickel isomorphism occurs in pyrrhotite.
Nickel is a silvery-white metal, first in 1751 by the Swedish mineralogist Cronstadt (AFCronstedt) isolated. Because of its good mechanical strength and ductility, high temperature refractory, and has a high chemical stability, in the air oxidation and other features, it is a very important non-ferrous material, is used to make stainless steel, high nickel alloy and alloy steel, widely used in aircraft, radar, missiles, tanks, ships, spacecraft, nuclear reactors and other military manufacturing. In civilian industry, often made of nickel steel, acid-resistant steel, heat-resistant steel is used extensively for a variety of mechanical manufacturing. Nickel also for ceramic pigment and corrosion coating, nickel-cobalt alloy is a permanent magnet material, widely used in electronic remote control, nuclear industry and ultrasound technology and other fields, in the chemical industry, nickel is often used as a hydrogenation catalyst. In recent years, color television sets, tape recorders and other communications equipment and other aspects of nickel consumption is also increasing rapidly. In short, the Nickel has excellent performance, has become the development of modern aviation industry, defense industry and the establishment of a high level of human material and cultural life of the modern system of essential metals.
In the southeastern province of Ontario, Canada, Huron Hubei side, there is a mining city Sudbury. It is currently the world's largest nickel mine, with its output accounting for 80% of world production of nickel or so. In recent years, people around the Sudbury Nickel ore found here are unique to the impact crater structure, shock metamorphism of minerals and rocks scattered around the large rock in the impact angle. This makes people believe: Sudbury ore body may be a crater, there was now a huge rich in iron, nickel meteorite, the breakdown of Sudbury's crust, crustal mafic magma rose in open the channel, while rich in iron, nickel hot mafic magma during ascent fusion meteorite itself rich iron-nickel metal, after transformation, condensation, forming a huge nickel mine today.



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Nandrolone Decanoate Description of drugs

[Drug Name] nandrolone decanoate
[English name] Nandrolone Decanoate
[Alias​​] Long Dole Bao Ling, Decadurabolin, DUrabol
Drug name] nandrolone decanoate
[English name] Nandrolone Decanoate
[Alias​​] Long Dole Bao Ling, Decadurabolin, DUrabol
CAS Number: 360-70-3
MF: C28H44O3
Molecular Weight: 428.65
EINECS Number: 206-639-3
Melting point :33-37 ° C
Specific rotation: 32 o
Storage conditions :2-8 ° C
[Properties] white or milky white or light yellow crystal at the end, no foul.
[Function and use] This product is mainly used for protein deficiency, such as chronic wasting disease, premature children, malnutrition, frail after surgery weight loss, loss of appetite, chronic diarrhea, but also for difficult to heal fractures, osteoporosis and so on.
[Usage and dosage]
1. Adult Dosage: Intramuscular: Each 25-50mg, once every three weeks.
2. The amount of children Intramuscular: Each 10-25mg, once every three weeks. Baby every 5-10mg, once every three weeks.
[Note]
1, liver, kidney, heart dysfunction careful.
2. Prostatic hyperplasia, prostate cancer, high cholesterol, hypertension patients and pregnant women, disabled.
3. At below 10 ℃ shading confined preservation.
Other Considerations with Nandrolone.
4. Long-term heavy use of the product can cause sodium retention, liver damage, slightly masculine women and so on.
[Formulation] injection (oil solution): 10mg (1ml) / branch, 25mg (1ml) / branch, 50mg (1ml) / expenses.



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calcium aluminium purposes and classification

Purpose:
Fused calcium aluminate (pre-melting aluminum calcium slag) is mainly used for LF furnace, open hearth furnace, converter ladle, the molten steel stripped of sulfur, oxygen and other impurities, reduce harmful elements in steel and impurity content, For carbon steel, high carbon steel, high and low alloy steels. Already mature applications in foreign countries, such as Korea, Japan, Europe and other developed countries.
Rui Shi produced fused calcium aluminate uniform chemical composition, low melting point, melting fast, can shorten the duration of heat; no fluorine, not erode the lining and ladle; structure is dense, non-absorbent, easy storage and transportation warehousing; Since the phase stability , into slag fast, can reduce the steel plant dust pollution, comprehensive and stable refining process; does not contain hydrogen, nitrogen, carbon and other impurities, helping improve the quality of steel. The user confirms that the factory fused calcium aluminate product stability over time curve function almost as a straight line. Avoid the cheap product (sintered products, health products cupola) wavy, zigzag curve function to bring many metallurgical production suited to the phenomenon.

Product Category:
Calcium aluminate products into water treatment, steel slag agent, high alumina cement three categories: ⑴ Calcium Aluminate implementation of standards for water treatment: "People's Republic of Chemical Industry Standard (HG3746-2004)";
⑵ steelmaking slag agent calcium aluminum enforce corporate standards: Q/7436-2047-0? 001-2008;
⑶ aluminum calcium alumina cement Executive Standard: "The People's Republic of standards (GB201-2000)".
Calcium aluminate main chemical composition Al2O3, CaO has strong activity, the use of acid production of water purification agent can save a lot of manpower, electric power, but also a greater cost reduction, process equipment and has a simple, easy operation and other characteristics, is ideal raw material for production of PAC. Alumina dissolution in acid solution rate of 90% or more.


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