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1.Experimental part 1.1 Raw material Ammonia ester modified liquefied MDI (U-MDI ), NCO%=28.4 %, functionality 2, ethylene oxide terminated polypropylene oxide polyether (PPO), ZS-2185, Mn=2000, [K+]<5ppm, primary hydroxyl content>70%  in DETDA, 2,4-isomer/2,6-isomer=80/20. MDA and catalyst dibutyltin dilaurate are chemical reagents, catalyst dosage: 2.0×10-1g cat./g PPO. 1.2 Sample preparation The raw materials are kept at 40 ℃. PPO, diamine chain extender and catalyst (component a) and u-MDI (component b) are mixed by 200g in a 50ml plastic beaker and poured into a mold with a Beder stirrer (1600r/min), the materials react quickly in the mold and are molded, the samples are taken out after 1-2 mins, the post-curing conditions are 120 ℃/30 min, and then maintained at 60℃ for 7 days. 1.3 DSC test Du Pont 1090 thermal analyzer and its matching thermal analysis crucible was heated at -120~250℃ and temperature raise at 20℃/min in N2 atmosphere, and ...

USP Standard Gel Clot Lyophilized Amebocyte Lysate in Test Tubes 1. Product information This method comforts to USP <85> Bacterial Endotoxins Test. The cost per test will reduce because there is no need to prepare depyrogenated test tubes. LAL gel clot test is the simple endotoxin testing by the forming of the gel clot by endotoxin and LAL lysate.   USP Standard Gel Clot TAL  reagent   single test vial  is the single test Gel Clot LAL reagent sealed under vacuum condition in a standard LAL reaction tube. Users add 0.2ml sample to dissolve the LAL reagent and do the test in a single step. This method comforts to Pharmacopoeia Bacterial Endotoxins Test. The cost per test will reduce because there is no need to prepare depyrogenated endotoxin free test tubes. We provide the gel clot single test vial in sensitivity 0.015EU/ml to 0.25EU/ml. The gel clot LAL kit with Control Standard Endotoxin is also available. The test tube diameter is in accordance w...

1P-LSD or 1-propionyl-lysergic acid diethylamide is a psychedelic drug of the lysergamide class that is a derivative and functional analogue of LSD and a homologue of ALD-52. Dosage:100μg Size:10mm*10mm(Or customize) Paper:200mm*300mm;300mm*300mm (Or customize) We can produce different dosages of 1P-LSD blotter paper according to your requirement,and you can tell our sell which pattern you want use. Have a nice shopping www.universaldrugslab.com RELATED TAGS : 1P-LSD blotter 1P-LSD blotting paper 1P-LSD blotter paper

About our product PMK Methyl 3-(3,4-methylenedioxyphenyl)glycidate CAS 13605-48-6,We are able to ship oil directly to you or offer you intermediates to help you cook for the oil. PMK power suit for Pharmaceutical Intermediates,Within 5 working days delivery,any package can be custom,Purity: 98.0%min.LimitNum: 100 Gram About our product PMK Methyl 3-(3,4-methylenedioxyphenyl)glycidate CAS 13605-48-6 Name PMK Methyl 3-(3,4-methylenedioxyphenyl)glycidate Synonyms 3-(1,3-Benzodioxol-5-yl)-2-oxiranecarboxylic a.cid methyl ester CAS NO. 13605-48-6 Molecular Formula C11H10O5 Molecular Weight 222.19 Appearance White to Pale Yellow Powder Purity 99% Min Density 1.412±0.06 g/cm3 M.P. 65 ºC Solubility Very slightly soluble PMK powder give yield of oil 75% . which means you will have 750gram bmk oil from 1kg powder. the process is quite easy and simple, it can be done in a normal kitchen without any special equipment. Place of Origin : China MOQ : 10g Price : 1usd/g Payment Terms : T/T, Western U...

Acetamiprid as a new type of quasi neonicotinoid efficient broad-spectrum pesticides, for pests and have tag and stomach poison effect, and have strong osmosis, the drug for citrus aphid has good control effect. Specifications: 1. 97%TC insecticide aerosol spray  2. Control of Hemiptera,especially aphids,Thysanoptera and Lepidoptera.  3. 5% EC, 20% WP 20%SP Application: Acetamiprid is a broad-spectrum, high-effective, safety, insecticide with good contact and stomach poisoning to pests, activity with good intassusception. Acetamiprid can be used to control many kinds of pests, such as vegetable-moth, thistle, aphid on vegetables; Thistle, peach fruit moth, powdery scale on fruit tree and tealeaf hopper, leek leaf miner. Packaging & delivery: 25kg/bag or 25kg/drum or according to customer's demand Normally 5-15 days from contract date Anhui Sinotech Industrial Co.,Ltd  is specially engaged in international marketing of food/feed additive,pesticides a...

Titanium diboride nanopowder  has the characteristics of high melting point and high hardness, and is resistant to molten metal corrosion, and is often used for preparing composite ceramics. A*STAR (Agency for Science, Technology and Reseach), Singapore's largest research institute, has successfully improved the strength and thermal properties of materials by adding titanium diboride to nickel-based alloys commonly used in 3D printing. It is expected to expand its application again. In this study, the base alloy chosen by scientists is currently a nickel-based alloy 625 that has been widely used in the marine industry. It consists of 55%-70% nickel, and other metals such as chromium, molybdenum, iron, niobium and tantalum. It has excellent corrosion resistance and oxidation resistance. It has good tensile and fatigue properties from low temperature to 980 °C. And resistance to stress corrosion under salt spray atmosphere. The scientists grind and mix the "Inconel625...

Differential scanning calculation (DSC) is a technique that under temperature control program, used to determine the relationship between the heat flow rate or power difference of samples and reference materials, and temperature or time under program control temperature. DSC has been widely used in the fields of material processing, chemistry, medicine, biochemistry, petroleum, aerospace, environmental protection, etc. Thermal analysis is an important method used in physical property analysis in raw material analysis to analyze the mineral composition and chemical composition of raw materials. DSC is a calorimetric analysis method. Its measurement results are affected not only by material state, but also by factors such as experimental conditions. This paper studies the main factors affecting DSC measurement results and puts forward suggestions that should be considered in DSC measurement. 1.Experiment Sample: copper alloy, fer roalloy, hydroxyapatite powder, ...

We  JubaoChem  just ship one container of  nitrocellulose  in this month, customer order the nitrocellulose for fireworks production, usually they require the viscosity of 1/4 sec, 1/2sec, 60/80sec and 1000/1500sec, most of the time we supply the nitrocellulose according to customer's requirement, there are many difference specification with difference viscosity for your choice. Also, except for the fireworks use nitrocellulose, we can offer the nitrocellulose for paint and nail polish, if customers don't sure what viscosity they may need we always suggest them to get some sample according to the application, in this case could ensure the shipping won't affect customer's inventory and the local demand. This years we ship some containers of nitrocellulose from Shanghai Port, we know a reliable and high efficiency forwarder in Shanghai, the forwarder can help us finish the customs clearance in Shanghai Port, and the nitrocellulose factory also cooperate with us for man...

The  gel clot TAL reagent   single tests  sealed in ampoule is the most economical way to testing endotoxin. Our gel clot reagents are strong resistance to interferences, has the widest range of sensitivities. Gel Clot TAL Reagent Single Test For Endotoxin In Ampoule 1. Product information Gel Clot TAL reagent Single Test  Vial in ampoule  is the TAL reagent seal in ampoules. After adding LAL Reagent Water to rehydrate the TAL reagent, sample directly added to the ampoule tubes, and then incubated  at 37 ºC for 60 minutes, upon incubation, a firm and intact gel after inversion of test tubes indicates the presence of endotoxin. The single test TAL reagent vials do not require pyrogen free glass test tubes. Users assay endotoxin in a single step. The method is simple, convenient, without the requirement for expensive equipment. We provide wide sensitivity reagent from 0.03EU/ml to 2.0EU/ml. The most common used sensitivity is 0.125EU/...

Pure  silicon carbide powder  is a colorless, transparent crystal. Industrial silicon carbide is light yellow, green, blue or even black due to the type and content of impurities contained in it. The transparency varies with its purity. The crystal structure of silicon carbide is divided into hexagonal or rhombohedral α-SiC and  cubic β-SiC  (called  cubic silicon carbide ). Since α-SiC constitutes many different variants due to the different stacking sequences of carbon and silicon atoms in its crystal structure, more than 70 kinds have been found. β-SiC is converted to α-SiC at 2100 ° C or higher. The industrial production method of silicon carbide is refined in a resistance furnace using high-quality quartz sand and petroleum coke. The obtained silicon carbide block is made into various particle size products by crushing, acid-base washing, magnetic separation, screening or water selection. Alpha Sic and Beta Sic have the following differences: 1. ...

α-Pyrrolidinohexiophenone (α-PHP, alpha-PHP, α-Pyrrolidinohexanophenone, PV-7) is a synthetic stimulant drug of the cathinone class developed in the 1960s which has been reported as a novel designer drug. It is a longer chain homologue of α-PVP, having an extra carbon on the alkyl side chain, and is a structural isomer of pyrovalerone. Adverse effects： α-PHP, like other psychostimulants, can cause hyperstimulation, paranoia, and hallucinations. α-PHP has been reported to be the cause, or a significant contributory cause of death in suicides and overdoses caused by combinations of drugs. α-PHP has also been linked to at least one death with pulmonary edema and moderately advanced atherosclerotic coronary disease when it was combined with pentedrone. Pharmacology： α-PHP acts as a norepinephrine-dopamine reuptake inhibitor with IC50 values of 14.2 and 12.8 nM, respectively, similar to its methylenedioxy derivative MDPV. Similar to other cathinones, α-PHP has been shown to have reinforci...

bmdp good quality and high purity bmdp,Powder and crytal,For lab or chemical research,Kept in a cool, dry and ventilated pla... CasNo: 1823274-68-5,Molecular Formula: C19H26O3;DeliveryTime: 2 days;Port: any port in china;PackAge: Aluminum foil bag or according to your needs. Good quality and high purity bmdp CasNo: 1823274-68-5,Molecular Formula: C19H26O3 DeliveryTime: 2 days;Port: any port in china PackAge: Aluminum foil bag or according to your needs ProductionCapacity: 50 Kilogram/Day;Purity: 99.8% Transportation: Transportation EMS,DHL,TNT,FEDEX,UPS LimitNum: 10 Gram;Moisture Content: <0.05%;Impurity: <0.05%  advantages:  1. samples are provided for test;  2. good quality products; 3. 100% secure delivery.  4.secure your money, lower the risk payment ways: western union, moneygram, bitcoin, t/t  delivery: ems/ eub/ usps/ ups/ tnt/ fedex / dhl etc  packaging: safe and discreet packaging  superiority  1 best service, high quality a...