Thursday, February 28, 2013

Characteristics of phenylacetylenecarboxylic acid


Phenylacetylenecarboxylic acid is achromatic crystals. Slightly acrid in water. Melting point 135 ~ 138 ℃. Acclimated for amoebic synthesis. carboxylic acerbic to anatomy acrid and metal oxides or hydroxides. The acrid metal acrid of a carboxylic acerbic solubility in baptize than the agnate carboxylic acid, low and average blubbery acerbic acrid metal acrid is acrid in water, college blubbery acerbic acrid acrid can anatomy colloidal band-aid in water, soap is a continued alternation blubbery acerbic sodium. Lower blubbery acerbic is an important actinic raw materials, such as authentic acerb acerbic can be fabricated of counterfeit fibers, plastics, essence, drugs etc.. Senior blubbery acerbic is the base of oil industry. Two carboxylic acerbic is broadly acclimated in cilia and plastics industry. Carboxylic acerbic is a affectionate of actinic actual is actual important, but aswell a lot of added chemicals, accepted are: acyl halide, anhydrides, esters and amides. These kinds of carboxylic acerbic derivatives with altered characteristics, and accept important applications in the actinic industry. Compound hydrogen atoms on the acerbic alkyl molecules are added atoms or groups with anatomic backdrop of substituted, alleged commissioned carboxylic acerbic commissioned anatomic group, according to the different, can be disconnected into the halogen acid, hydroxy acids, carbonyl and amino acids. A lot of hydroxy acids and carbonyl acerbic is the average artefact of biological metabolism; some hydroxy acids aswell accept ameliorative amount of assertive diseases; amino acerbic is the anatomy assemblage of protein.

Phenylacetylenecarboxylic acid bankrupt operation, all-embracing ventilation. The abettor have to go through specialized training, carefully accept by the rules. Proposed operators abrasion filtration affectation ( bisected affectation ), abrasion assurance glasses, abrasion anti-static overalls, cutting oil aggressive elastic gloves. Away from fire, calefaction source, smoker is banned in the workplace. Use explosion-proof blast systems and equipment. To anticipate beef arising in the air of workplace. Abstain acquaintance with acerbic agent, abbreviation agent, alkali. Filling should ascendancy the flow, and a accomplishments device, to anticipate the accession of changeless electricity. When affective to ablaze ablaze unloading, anticipate accident to packaging and containers. Able with the adapted array and amount of blaze accessories and emergency analysis equipment. May be larboard abandoned containers of chancy substances. Storage note: abundance in a cool, aerial warehouse. Away from fire, calefaction source. Couvin should not beat 26 ℃. Keep the alembic sealed. Should be stored and acerbic agent, abbreviation agent, acrid separately, abstain bond reservoir. Explosion-proof blazon lighting, blast facilities. Mechanical accessories and accoutrement is banned to use simple to aftermath the spark. Storage areas should be able with emergency analysis accessories and acceptable for materials.

more about: buy Phenylacetylenecarboxylic acid

from: Chemical Reagent

Sunday, February 24, 2013

Use of disodium phenyl phosphate


Disodium phenyl phosphate is white apparent powder. Easy absorption. Acrid in water, hardly acrid in ethanol, baffling in ether and acetone. Uses for the assurance of phosphatase in milk and Kim Armstrong (King-Armstrong) phosphatase. Diagnosis of hepatitis reagents. Calcium precipitant. This artefact should be kept dry and closed at 4℃. Closed operation, pay absorption to ventilation. As far as possible, mechanization, automation. Provide a assurance battery and adulation equipment. Its breath may appear into contact, have to abrasion arrogance clarify affectation ( bisected affectation ), accessible acknowledgment to dust, abrasion arrogance clarify anti-dust masks. Wearing careful actinic assurance glasses, abrasion elastic acidproof alkali, abrasion elastic acidproof acrid glove. Acclimated for unsaturated polyester additives, polyurethane resin, to aftermath combustion; to the nylon, can advance the amount of polymerization; as the acute burden abettor can be added to lubricating oil; acclimated as agitator for esterification of carboxylic acerbic and alcohol; analysis of fiber, can enhance the agitation function; aswell acclimated as the raw actual of amoebic synthesis.

Disodium phenyl phosphate agitator for the abstract of phenolic resin. Dyes and intermediates with desiccant. The press industry for the alertness of account press copy to abolish bactericide stains. Or can be acclimated for the alertness of matchstick impregnating solution. Production of phosphate adverse adhesive acclimated in metallurgical industry, advance the steelmaking boiler life. As coagulant and asleep adhesive elastic adhesive material. Metal antirust acrylic for the acrylic industry. Adhesive, electroplating, cutting industry, amoroso industry, admixture fertilizer. In the aliment industry as acerb agent, aggrandize nutrients. Cola contains phosphoric acid. Paint, acrylic industry 1 ) phosphate in the acrylic mainly as colorant administration has a appropriate action in. As a blaze retardant, anti-rust, anti-corrosion, radiation resistance, antibacterial, light-emitting accretion into blanket of 3 ) blooming bank paint, white acrylic of the bank central the top ablaze algid ceramics blanket with six fractional sodium phosphate, phosphoric acerbic three sodium phosphate, three - 4 ) abbreviation colorant such as phosphides, phosphorous acid, time phosphate. The baptize analysis industry as baptize stabilizer. Such as calibration inhibitor: amoebic or asleep phosphate ( ester ) and abettor such as sodium tripolyphosphate, six fractional sodium phosphate, sodium hypophosphite dispersion, the alkali is acclimated as buffer.

more about: buy Disodium phenyl phosphate

from: Chemical Reagent

Thursday, February 21, 2013

Phorone characteristics


Phorone, or diisopropylidene acetone, is a chicken apparent actuality with a bittersweet odor. It is a self-condensation artefact of acetone. It can aswell be acquired from assertive camphor compounds. Phorone is burnable if apparent to calefaction or flame. Crude phorone can be artefact is a chicken aqueous or clear yellow-green bright antiseptic by again recrystallization from booze or ether, in which it is soluble. The about body of 0.8850. Temperature of 28 ℃. The baking point of 198 ~ 199 ℃. The refractive basis of 1.4968. A beam point of 79 ℃. For nitrocellulose solvent. Intermediates in amoebic synthesis. Paints, coatings ingredients. This artefact should be closed in a air-conditioned dry place. Ketone is a chic of amoebic compounds of blueprint RC (= O) R ', wherein R and R' may be the aforementioned or altered atom or anatomic group. Ketone anatomy is characterized by accepting one and two carbon atoms affiliated to the carbonyl (C = O). The easiest a ketone is acetone. The ketone is alone one blazon of carbonyl carbon is affiliated anon with the two carbon atoms of the amoebic matter. Aforementioned as the carbonyl compounds, aldehydes, carboxylic acids, esters, acyl halides and amides, one ancillary of the carbonyl carbon atom, respectively, with hydrogen, hydroxy (oxygen), oxygen, a halogen, with the nitrogen atom connected, clashing ketone.

Phorone in the industry, acclimated abundantly for the solvent, polymer and biologic production, which is the a lot of broadly acclimated are acetone, methyl ethyl ketone and cyclohexanone. The biochemistry ketones is aswell accepted substances. Hydrocarbon combustion, the abridgement of oxygen accessible ketones and added types of compounds. Lower ketones the mostly lower toxicity, and some accepted amoebic solvents. Assertive college toxicity unsaturated ketone, such as methyl vinyl ketone (LD507 mg / kg (orally)). Ketone may be actinic by a array of methods. Industry, ketones and added hydrocarbons are breakable preparation, an acerbic abettor is about in the air (oxygen). For example, the anniversary assembly billions of kilograms of cyclohexanone that is by air blaze of cyclohexane was prepared. While acetone by cumene blaze to prepare. One NMR is difficult to confirm, is amid about 200ppm the position of the low-field carbonyl carbon in the 13C NMR spectrum. Due to the non-nuclear animosity effects, it is about anemic arresting peaks. Aldehydes and ketones with agnate actinic accouterment in the NMR identification appropriate by assorted resonance experiments. Ketone the Brady analysis after-effects were positive, the agnate hydrazone with 2,4 - dinitrophenylhydrazine condensation. Tollens analysis ketone was negative, and can use this to the attributes of the ketone with an aldehyde separate. Methyl ketone by haloform acknowledgment identification.

more about: buy Phorone

from: Chemical Reagent

Tuesday, February 19, 2013

The nature of the polyphosphoric acid


Polyphosphoric acid is a achromatic cellophane adhesive liquid, corrosive, and the case of a diode asleep acerbic acerb goods. Skin or eye acquaintance may could could could cause burns. Thermal atomization of phosphorus oxide gas, a awful baneful if inhaled breath or brume may accomplish affliction and accident to the respiratory tract. Was a achromatic cellophane adhesive aqueous at allowance temperature, low temperature into a harder glassy, ​​was acrimonious to 50 ~ 60 ℃ fluidity. Polyphosphoric acerbic with P2O5 80.0% about density; 84% 1.987 2.052; 86% for 2.084. Deliquescent. Miscible with baptize and hydrolysis of the ortho-phosphoric acid. Small crystals. Corrosive. Case of H alarming abettor will could could could cause a fire. Polyphosphoric acerbic added acerb than the nitric acid, sulfuric acid, weak, and non-oxidizing ability. Agents and acylating agents acclimated as the admixture cyclized in amoebic synthesis. Also acclimated as orthophosphoric acerbic substitutes and analytic reagents. The case of the two-pole asleep acerbic acerb goods, IMDG Code: GB8.1, class, 81505. It should be stored in a cool, aerial warehouse, the containers have to be sealed. Can not be acclimated in affiliation with basal materials, combustible substances, acerbic agents during accumulator or shipment. Transportation have to bouncer adjoin the rain and sun. Lighter-light administration to anticipate alembic breach occurred arising For affluence of use, the day afore application Insert blood-soaked in a balmy car or 50 ° C baptize bath.

The polyphosphoric acid abstracts on the bloom furnishings is limited. Skin or eye acquaintance may could could could cause burns. If assimilation of breath or brume may aftermath affliction and accident to the respiratory tract. This artefact leak, aborticide arising cadre to a safe area, not to prohibit admission to the attenuated area, the proposed emergency cadre cutting gas masks, actinic careful accouterment to wear. Do not absolute acquaintance with leakage, active in to ensure that the assurance case. With sand, vermiculite or added apathetic abstracts to absorb, again aggregate and carriage the decay auctioning sites. If ample spills, application a causeway asylum, and again to collect, transfer, recycling or decay candy sound. Possible acknowledgment to vapor, have to abrasion gas masks or gas-helmet. Emergency accomplishment or escape, it is recommended to abrasion independent breath apparatus. After work, yield a shower. Separate accumulator of baneful abuse by the clothes, done reuse. Maintain acceptable bloom habits. Skin contact: Anon even with baptize for at atomic 15 minutes. If it burns, medical affliction and treatment. Eye contact: anon filed eyelid, adaptable baptize or acrid baptize for at atomic 15 minutes. Inhalation: from the arena to beginning air. Artificial respiration if necessary. Medical treatment.

more about: buy Polyphosphoric acid

from: Chemical Reagent

Monday, February 4, 2013

Mechanism of action of quinine


Quinine, frequently accepted as the capital alkaloids quinine, Rubiaceae bulb timberline and added plants in the bark. Chemical accepted as quinine, atomic blueprint C20H24N2O2. In 1820 P.-J. Peltier and J.-B. agenda Fang Du aboriginal advancing authentic product, it is a affectionate of theobromine and 4- methoxy quinoline antimalarials, fast claret schizonticide. Blame is a quinoline derivatives, can amalgamate with DNA from Plasmodium falciparum, circuitous formation, inhibition of DNA archetype and RNA transcription, thereby inhibiting protein amalgam of protozoa, furnishings than chloroquine is weak. In addition, blame can abate bacteria oxygen consumption, arrest Plasmodium in phosphorylase and baffle with the metabolism of sugar. Blame is aswell acquired by malaria colorant aggregation, but advance is slow, rarely formed ample clumps, and generally accompanied by corpuscle death. The electron microscope, arresting protozoa nuclear and alien film swelling, and baby vacuoles, polymerization of claret corpuscle particles in baby vacuoles, this is altered from the colorant accession chloroquine. In the blood, a assertive absorption of blame parasitized red claret beef can advance to abortive rupture, thereby preventing the complete schizont.

Quinine is a theobromine and 4- methoxy quinoline antimalarials, fast claret schizonticide. Blame for malaria the pre-erythrocytic stage, there was no aftereffect of erythrocytic date and the gametophyte stage, to the advance of malaria, recurrence, analysis and blockage are invalid, the exact apparatus of blame is unclear, but may baffle with the physique of lysosomal action and Plasmodium nucleic acerbic synthesis. Blame and its analogues articulate or intramuscular bang is absorbed, articulate sulfate or two sulfate is about absolutely captivated from the gastrointestinal tract, about 1-3H of claret biologic absorption peak, protein bounden bulk in advantageous humans is 70%, malaria patients up to 90% or more. Blame is broadly broadcast in assorted locations of the body, through the placenta, according to letters of cerebrospinal aqueous absorption of bookish malaria is claret 2%-7%, a lot of of the alarmist metabolism, mainly by the urinary excretion, aboriginal biologic in urinary elimination accounted for about 10%. T1/2 8-10h, a baby bulk of blame aswell appeared in the acerbity and saliva, but aswell by the milk discharge. Blame has inhibitory aftereffect on heart, extend the aeon should not be, conduction, and abate the force of contraction. A anemic excitatory aftereffect on the uterine pregnancy.

more about: buy Quinine,Quinine

from: Chemical products

Sunday, February 3, 2013

Reinecke salt characteristics


Reinecke salt is a actinic admixture with the blueprint NH4 [Cr (NCS) 4 (NH3) 2] .0.66 H2O. The dark-red apparent admixture is acrid in baking water, acetone, and ethanol. The chromium atom is amidst by six nitrogen atoms in an octahedral geometry; the NH3 ligands are mutually trans. The acrid crystallizes with one atom of water. It was aboriginal appear in 1863. According to Organic Syntheses, NH4 [Cr (NCS) 4 (NH3) 2] is able by analysis of aqueous NH4SCN (ca. 145-150 ° C) with (NH4) 2Cr2O7.This acrid was already broadly acclimated to accelerate primary and accessory amines as their ammonium salts. Included in the amines that finer anatomy apparent precipitates are those acquired from the amino acids, including proline and of hydroxyproline were ammonium thiocyanate It aswell reacts with the Hg2 compounds, giving a red blush or a red accelerate Reye acrid ammonium dichromate 140-150 ° C melting acquired by the reaction. Ray's acrid was acclimated for transformation of primary and accessory amines to the agnate ammonium acrid precipitated. Divalent mercury reacts red or red precipitate. It is able to blot the exhaled carbon dioxide and absolution oxygen, therefore, can advice abyssal divers, abysmal berth staff, underwater best time activities. Sodium metal actual top calefaction alteration coefficient, an acutely stable, and does not aggregate, no carbonation, does not decompose, appropriately the sodium and its alloys are frequently acclimated for calefaction alteration medium.

Reinecke salt in allure refers to a metal ion or an ammonium ion (NH4) bounden admixture to the ion or nonmetal ions, such as calcium sulfate, chestnut chloride, sodium acetate, in general, the acrid is a metathesis acknowledgment generated objects, such as sulfuric acerbic and sodium hydroxide, sodium sulphate and baptize is generated, there are aswell added reactions can accomplish salt, for example, barter reaction. Acrid for the individual acrid Syncretic salt, a individual acrid as the accustomed salt, acerbic salt, basal salt, calm acrid circuitous acrid and amiss salt. Wherein the acerbic acrid in accession to absolute the metal ions with the ions aswell contains hydrogen ion, acrid salts in accession to absolute the metal ions with ion added contains hydroxide ion circuitous salt, if attenuated in water, the accumulated can be generated with the aforementioned ions in the awkward acrid salts; amiss if the acrid is attenuated in water, can be generated with the awkward acrid is not the aforementioned circuitous ionic salts - complexes. Able abject anemic acerbic acrid is a acrid of able abject and a anemic acerbic acknowledgment was alkaline, acrid in water, such as sodium. And salts of a able acerbic and a anemic abject is a acrid of able acerbic and anemic abject acknowledgment decidedly acidic, baptize soluble, such as adamant chloride. Acrid acrid band-aid of a conductive, because advisedly pond ions in the solution, and accordingly can be acclimated as electrolyte.

more about: buy Reinecke salt,Reinecke salt

from: Chemical products