Properties of Potassium Borohydride

  Potassium borohydride is a kind of white loose powder or crystals, with the relative density of 1.178. Its melting point is 585 ° C, so it begins to decompose about 500 ° C in a vacuum. It is stable in the air, not hygroscopic. Potassium borohydride is soluble in water, aqueous solution is heated to 1000 ° C, complete release of hydrogen. It is soluble in liquid ammonia, slightly soluble in methanol and ethanol, and almost insoluble in ether, benzene, tetrahydrofuran, ether and other hydrocarbons. Potassium borohydride is stable in an alkaline environment in the case of inorganic acids decompose and release hydrogen.
Properties of Potassium borohydride:
Melting point:> 400 ° C (decomposition)
Solubility: insoluble in hydrocarbons, benzene, ether, slightly soluble in methanol, ethanol, soluble in liquid ammonia.
Density: the relative density (water = 1) 1.18.
Stability: Stable.
Hazard markers: 10 (when wet flammable liquids).

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The Chemistry of Pregnenolone

Pregnenolone is a steroid hormone involved in the steroidogenesis of progesterone, mineralocorticoids, glucocorticoids, androgens, and estrogens. As such it is a prohormone. Pregnenolone sulfate is a GABAA antagonist and increases neurogenesis in the hippocampus.

Item name:Pregnenolone
CAS:145-13-1
Molecular Formula:C21H32O2
Molecular Weight:316.48 g/mol
Specification:USP

Like other steroids, pregnenolone consists of four interconnected cyclic hydrocarbons. It contains ketone and hydroxyl functional groups, two methyl branches, and a double bond at C5, in the B cyclic hydrocarbon ring. Like all steroid hormones, it is hydrophobic. Its esterified version, pregnenolone sulfate, is water-soluble.

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What Is Butylated Hydroxytoluene (BHT)?

Butylated hydroxytoluene (BHT), also known as butylhydroxytoluene, is a lipophilic (fat-soluble) organic compound, chemically a derivative of phenol, that is useful for its lubrication properties. European and U.S. regulations allow small percentages to be used as a food additive, but that is not without controversy as there are claimed links to child hyperactivity as well as to cancer. Conversely, BHT is advocated as a diet supplement and antiviral useful against herpes family viruses. While there may be some dispute in BHT's use in the human diet, the chemical is widely used in industry wherever oxidation in fluids (e.g. fuel, oil) and other materials must be treated, and free radicals must be kept in-check.

Butylated hydroxytoluene (BHT) is a  phenolic compound that is often added to foods to preserve fats. BHT is an antioxidant and common food preservative, approved by the FDA for food, oils and fats.

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Emergency Overview of Sodium Fluorosilicate

Sodium fluorosilicate is a compound with formula Na2SiF6. Sodium fluorosilicate is made by neutralizing fluorosilicic acid with sodium hydroxide or sodium carbonate. This operation is carried out under vigorous agitation, with control of the ration of reagents in order not to simultaneously produce the fluoride by introduction of excess alkali.

Product name: Sodium fluorosilicate
Molecularformula: Na2SiF6

Cas No.:16893-85-9
Molecularweight: 41.99
Execute standard: National standard/GB
Apperance:  white crystalline powder, insoluble in alcohol, but soluble in ether.

Emergency Overview of Sodium Fluorosilicate:
• Hazardous product for the human health and the aquatic environment.
• Presents hazards from its ionizing fluorine.
• In case of decomposition, releases hydrogen fluoride.

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Knowledge of Cholesteryl Benzoate

Cholesteryl benzoate was the first material in which liquid crystal properties were discovered. In the late 1880s Friedrich Reinitzer, an Austrian botanist, while studying the chemicals in plants, heated cholesteryl benzoate. At 145 °C the material melted, yielding a cloudy fluid, which changed to the originally expected clear liquid at 178.5 °C. In 1888, the German physicist Otto Lehmann concluded the cloudy fluid presents a new phase of matter, and coined the term liquid crystal.

Product name:Cholesteryl benzoate

CAS:604-32-0

Molecular Formula:C34H50O2

Formula Weight:490.76g/mol

A cholesteryl ester is, as its name would imply, an ester of cholesterol. The ester bond is formed between the carboxylate group of a fatty acid and the hydroxyl group of cholesterol. Cholesteryl esters have a lower solubility in water than cholesterol and, in other words, are more hydrophobic. They are associated with atherosclerosis.


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How to Get Pulvis Cornus Bubali Concentatus?

Pulvis Cornus Bubali Concentatus is a light gray powder; gas slightly fishy taste brackish. Pulvis Cornus Bubali Concentatus has many functions,such as, to make a strong heart, anti-inflammatory, anti-infection, sedation, Anticonvulsant, shorten the bleeding time and reduce capillary permeability, the role of excited pituitary - adrenal cortex system.

The way to produce Pulvis Cornus Bubali Concentatus:
Take water buffalo, washed, saw off, remove the angle plug, split into small pieces. Select a solid core part of the tip (Xi said the "sharp angle"), crushed into fine powder with 75% ethanol soak or steam sterilization. The rest (Xi said, "corner pile") labeled as coarse particles, or pounds into thin slices. Take the corner pile of coarse particles or pound piece 810g, plus 10 times the amount of boiling water twice every 10 hours, at any time in the boiling process adds steam to the water combined decoction, filtration, the filtrate was concentrated to 80 ~~ 160ml Add to the above-mentioned angle of taper powder 190g, mixing, below 80 ℃ after drying, crushing into a fine powder, sifted, that was.

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Brief Description of Kollidon 90F

Kollidon 90F's main application is as binder in granules and tablets. It is further applied to modify the viscosity of liquid dosage forms. It also improves the bioavailability of some hardly soluble actives. Kollidon 90F is soluble in high-molecular povidone with highest binding properties within the povidone range.

Product name:Kollidon 90F
Specification:25kg
Kollidon 90F has high molecular weight (W1 ,000,000-1, 500,000) product. It has a variety of major applications, for example, it is used as a high-performance adhesive, oral and topical suspension stabilizer, thickener, surgical plastic pore agent. Kollidon 90F is also used to improve a number of bioavailability of insoluble drugs.
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