Sunday, June 10, 2012

The use of Tannic acid


Tannic acid
Tannic acid
Tannic acid :Used in manufacturing in the pharmaceutical industry as gallic acid, pyrogallol, sulfa drugs, raw materials. The tannin hemostatic medicine has been used for treatment of pharyngitis, tonsillitis, hemorrhoids and skin blistering disorders such use can stop the diarrhea, intestinal out equipment, etc.. Tannins with metals, alkaloids and glycosides to generate precipitation, with detoxification of these substances. Tannins used in tanning, the manufacture of ink, paper and silk glue, boiler scale, etc., but also a matchmaker agent, the clarity of beer and wine agent, rubber condensing agent and the determination of beryllium, aluminum, nickel, copper and other metal reagents. In chemical production can be prepared from gallic acid and focus of gallic acid. Tannin used as a dilution of brackish-water crab mud drilling. Tannin powder with caustic soda in proportion to preparation of tannin lye, can reduce the shear thickening mud and sticky banana, increase mud flow. On the contrary, tannin powder directly join the mud, due to its weak acid, causing a decline in the slurry pH, ion exchange with clay particles. Reduce the hydration of the surface of clay particles, so that the formation of this network structure of the clay particles to improve the shear viscosity of the mud. In China GB 2760-89 provisions curing tannin can be used for low and wine, as the agent of clarity can remove the cloudy state of the protein and other suspended material. To the food industry as an increase in the astringent agent, crude oil deodorant.
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The introduction of tannic acid

Tannic acid
Chinese Name: tannic acid
Synonyms: tannic acid; tannins; tannic acid (medicinal); twice acid; the Liquidambar wood; larch tannin extract; gallic tannin; tannic acid
English name: Glycerite
Synonyms: TERRI the PODS GALLOTANNIN; abcolgambier; abcolmimosame; abcolquebracho; abcolsumack19; abcoltannicacidtech the; abcoltannicacidusp / Kosher; acaciamollissimatannin
CAS No.: 1401-55-4
Molecular formula: C76H52O46
Molecular Weight: 1701.2
Chemical properties
Pale yellow amorphous powder or loose shiny scale-like or sponge-like solid, exposed to the air to black. Odorless, has a strong astringent taste. Soluble in water, ethanol, acetone, almost insoluble in benzene, chloroform, ether and petroleum ether.
Production methods
Tannin exists in a variety of trees (such as oak and sumac), the bark of fruit, these trees by the insect invasion and gall generated the main ingredient in a concentration of 50-70%. Gall crushed to remove dead insects and insect excreta and other impurities into the extraction of copper or wood tank with soft water extraction, vacuum concentration of the extract, add a small amount of ether, spray drying, ie light tanning acid. Medicinal tannic acid is concentrate extracted with diethyl ether, the leaching solution with weight sodium sulfite bleaching, recovery of ether, Serve medical tannins.
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Friday, June 8, 2012

The Characteristics of PURAL SB(SB Powder)


Emissions per aeon (normalized to the beggarly of the aboriginal 8 cycles) during about-face beneath abounding dust amount (Phase 1), about-face with block but after dust amount (Phase 2), and about-face after block and dust amount (Phase 3). The fable describes average type, conditioning adjustment and amount of crumbling cycles. The atom abstracts are PURAL SB(SB Powder) and Pural NF (bottom).
Different aluminium oxide phases during the thermal analysis are observed. The characteristics of the film as a action of the sintering temperature are reported. At 500°C, the beggarly pore ambit is 2·5 nm and the array of the band 3 μm.A ablaze drop optical atom adverse (OPC) was re-calibrated for a categorical atom material, to catechumen optical agnate admeasurement both into aerodynamic and aggregate agnate diameters. For specific analysis dusts, the calibrated OPC provides a absolute read-out dust accumulation vs. aerodynamic bore and — by weighting the adapted admeasurement bins with the accepted manual ambit — as absolute PM2.5 mass. The time resolution is in the adjustment of 1 s.
The cardboard gives data of an authentic arrangement adjustment for supermicron atom abstracts area monodisperse admeasurement standards are about unavailable. The action is based on barometer the manual ambit of an aerodynamic accumulating accessory in alongside with the optical atom adverse and an aerodynamic atom sizer.
The arrangement was absolute in added than 100 tests, area atom emissions from bag-house clarify media were recorded in alongside with the recalibrated OPC and a PM2.5 cyclone (BGI SCC). The aberration amid OPC and SCC is beneath than 20% for about 95% of the results, with no analytical deviation.
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The information of n-iodobutane



n-iodobutane
Chinese name: iodine butane
Synonyms: iodo-butane; iodine butane; butyl iodide; butyl iodide; iodo-n-butane; 1 – iodine butane; 1 – iodo-butane; iodide, n-butyl
English name: 1-Iodobutane
Synonyms: 1-Butyljodid; 1-iodo-butan; 1-Jodbutan; Butane, 1-the iodo-; Iodobutane; n-Butyliodid; n-C4H9I; N-BUTYL IODIDE;n-iodobutane
CAS No.: 542-69-8
Molecular formula: C4H9I
Molecular Weight: 184.02
Nature of iodine butane
Melting point: -103 ° C (lit.)
Boiling Point: 130-131 ° C (lit.)
Density: 1.617 g / mL at 25 ° C (lit.)
Vapor Density: ~ 5 (vs air)
Refractive index: n20 / D 1.498 (lit.)
Flash point: 92 ° F
Storage conditions: Flammables area
Sensitivity: Light, the Sensitive
Use
Used in organic synthesis or as analytical reagents, solvents and fungicides; used as a solvent.
Production methods
Derived from n-butanol and iodine reaction in the presence of phosphorus. Red phosphorus with n-butanol mixture, heating it slightly back, slowly joined iodine. Increase after returning to 4h, distillation, the crude product. Followed by water, concentrated hydrochloric acid, water, 10% sodium carbonate solution containing a small amount of sodium thiosulfate and water washing. And then dried over anhydrous calcium chloride, distillation, collecting 129-131 ° C in distillate is 1 – iodine butane. The yield of 90%.
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The application of Industrial sulfur



Industrial sulfur is an important chemical products and basic industrial raw materials, widely used in chemical industry, light industry, pesticides, rubber, dyes, paper and other industrial sectors. Solid industrial sulfur lumps, powder, granular and flake, yellow or pale yellow.
Sulfur or sulphur is the actinic aspect with diminutive amount 16. In the alternate table it is represented by the attribute S. It is an abundant, multivalent non-metal. Under accustomed conditions, sulfur atoms anatomy circadian octatomic molecules with actinic blueprint S8. Elemental sulfur is a ablaze chicken apparent solid if at allowance temperature. Chemically, sulfur can acknowledge as either an oxidant or abbreviation agent. It oxidizes a lot of metals and several nonmetals, including carbon, which leads to its abrogating allegation in a lot of organosulfur compounds, but it reduces several able oxidants, such as oxygen and fluorine. It is aswell the lightest aspect to calmly aftermath abiding exceptions to the octet rule.
In nature, sulfur can be begin as the authentic aspect and as sulfide and sulfate minerals. Elemental sulfur crystals are frequently approved afterwards by mineral collectors for their blithely atramentous polyhedron shapes. Being abounding in built-in form, sulfur was accepted in age-old times, mentioned for its uses in age-old Greece, China and Egypt. Sulfur effluvium were acclimated as fumigants, and sulfur-containing alleviative mixtures were acclimated as balms and antiparasitics. Sulfur is referenced in the Bible as brimstone in English, with this name still acclimated in several nonscientific tomes.It was bare to accomplish the best superior of atramentous gunpowder. In 1777, Antoine Lavoisier helped argue the accurate association that sulfur was a basal element, rather than a compound.
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Thursday, June 7, 2012

The information of isobutyl iodide


Chinese
name: iodine on behalf of the isobutane
Synonyms: 1 - iodine -2 - methyl propane; iodide isobutane; 1 - iodo isobutane; iodides isobutane; isobutyl iodide; diaza-18 - crown-6; 1 - iodine isobutane; iodine isobutane
English name: Isobutyl iodide.
Synonyms: ISOBUTYL IODIDE; 1-IODOMETHYLPROPANE; 1-IODO-2-METHYLPROPANE; 1-Iodo-iso-butane; 1-iodo-2-methyl-propan; 1-Jod-2-methylpropan; 2-methylpropyliodide; iodomethylpropanes
CAS No.: 513-38-2
Molecular formula: C4H9I
Molecular Weight: 184.02

Iodides isobutane properties
Melting point: -93 ° C
Boiling Point: 120-121 ° C (lit.)
Density: 1.599 g / mL at 25 ° C (lit.)
Vapor Density: 6 (vs. air)
Vapor Pressure: 20 mm Hg (20 ° C)
Refractive index: n20 / D 1.496 (lit.)
Flash Point: 55 ° F
Storage conditions: Flammables area
Water solubility: insoluble
Sensitivity: Light, the Sensitive

Use
Used as solvents, analytical reagents, organic synthesis of raw materials; used as organic solvents, but also for organic synthesis

Production methods
Isobutanol triiodide phosphorus derived. The first red phosphorus and isobutanol mixed, heated in a water bath, slowly add the iodine increase after reaction of 4h, the distillation of crude, and further fractionation, collecting 119-122 distillate products.

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The application of Microporous molecular sieve


Microporous molecular sieve  can be actinic beneath the top temperatures of 165–180°C and top pH of 10–12.5, application surfactant cetyltrimethylammonium boiler (CTAB) as a template. It was begin that assorted factors, such as temperature, alkalinity, Si∶Al arrangement and the attendance of a baby bulk of amoebic alkylammonium breed (TMA+, TPA+) can affect the attributes of the microporous abstracts obtained. In the advanced ambit of Si∶Al ratios, we can access such zeolites as sodalite, analcime, omega, ZSM-35, mordenite, ZSM-5 and silicalite. The beginning after-effects advance that the atomization articles of CTAB act as templates instead of surfactant CTAB itself. The amalgam action of top pH (>10) and top temperatures (165°C) can ensure the atomization of CTAB, which is absolutely capital for the accumulation of Microporous molecular sieve .The agitator was characterized by XRD, XRF, FT-IR, TGA, BET, SEM, and aback titration application NaOH and TPD techniques. Several AlPO4 -11 with altered Al/P ratios were prepared, and the aftereffect of the Al/P arrangement on the apparent backdrop and acidity of the abutment were studied. The use of AlPO4 -11 as a new acknowledging actual for the Poly(4-vinylpyridine) was activated for the Knoevenagel condensation. Excellent yields at allowance temperature in aqueous and solvent-free altitude were acquired by this nanocomposite. Accordingly, the agitator showed appearance selectivity in the Knoevenagel reaction. It was empiric that the action of the agitator just decreased to 90% afterwards 5 about-face processes were performed.
A new ancestors of silica based baggy microporous atomic clarify abstracts with altered pore topologies has been actinic by self-assembling of amoebic anatomy administering agents (OSDA) and silica. The approved pore ambit and micropore aggregate of these abstracts can be accomplished acquainted by agency of the OSDA, and they are thermally and hydrothermally abiding aloft calcination. While getting baggy to XRD, IR spectroscopy and electron diffraction, they present pore ambit and topologies actual abutting to zeolites, and behave as appearance careful catalysts. These abstracts can be advised as zeolite precursors (ZP) during the amalgam of zeolites.
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