Product name:Tetrabutylammonium bromide
CAS: 1643-19-2
Molecular Formula: C16H36BrN
Molecular Weight: 322.37
Product description:Tetrabutyl ammonium bromide is a kind of effective phase transfer catalyst. Phase transfer catalysts, PTC for short, is able to water phase (organic phase) of reactants to organic phase (or water), and the catalyst, which can make reaction in water phase and organic phase between two phase catalyst. PTC has change the extent of ion solvation, increase properties, such as ion reactivity, speed up the reaction. Solved the difficult problem of reaction in two phase reactant. Common quaternary ammonium salt phase transfer catalysts are: three octyl dimethyl benzyl triethyl ammonium chloride, ammonium chloride, tetramethyl ammonium bromide, four propyl chloride and tetrabutyl ammonium bromide, tetrabutyl ammonium iodide, triethyl benzyl ammonium bromide, triethyl ammonium bromide, triethyl octyl ammonium bromide.
2017年8月8日星期二
2017年8月4日星期五
Barium hydroxide for sale
Product name:Barium hydroxide
CAS: 12230-71-6
Molecular Formula: Ba(OH)2
Molecular Weight: 171.35
Product description:Colorless transparent crystals or white powder. In sulfuric acid dryer can lose 7 molecular crystal water, about 78 ℃ lost all the water of crystallization. Soluble in water and carbinol, slightly soluble in ethanol, almost insoluble in acetone. If after quickly absorb carbon dioxide from the air into carbonate, are not completely soluble in water. Relative density 2.188. Eight, melting point 78 ℃ (in the case of pure barium hydroxide is > 408 ℃). The refractive index of 1.471. Poisonous. Corrosive. The determination of carbon dioxide from the air. Chlorophyll quantitatively. Refined sugar and animal and plant oil. Boiler water detergent. Pesticides. Rubber industry.
CAS: 12230-71-6
Molecular Formula: Ba(OH)2
Molecular Weight: 171.35
Product description:Colorless transparent crystals or white powder. In sulfuric acid dryer can lose 7 molecular crystal water, about 78 ℃ lost all the water of crystallization. Soluble in water and carbinol, slightly soluble in ethanol, almost insoluble in acetone. If after quickly absorb carbon dioxide from the air into carbonate, are not completely soluble in water. Relative density 2.188. Eight, melting point 78 ℃ (in the case of pure barium hydroxide is > 408 ℃). The refractive index of 1.471. Poisonous. Corrosive. The determination of carbon dioxide from the air. Chlorophyll quantitatively. Refined sugar and animal and plant oil. Boiler water detergent. Pesticides. Rubber industry.
Potassium chromate price
Product name:Potassium chromate
CAS: 7789-00-6
Molecular Formula: K2CrO4
Molecular Weight: 194.19
Product description:Used for metal rust inhibitor, the manufacture of chromate. Used as oxidant, mordant dyeing and printing. Used in ink, paint, enamel, metal anti-corrosion, etc. Oxidation. Used in tanning, medicine, and used as a mordant and analytical reagent. Can be used for the silver nitrate titration indicator of chlorine root. With indicator method: 10 g potassium chromate in 100 ml water, with AgNO3 precipitation titration to reddish, let stand for one night. The titration end point changed from red to orange
CAS: 7789-00-6
Molecular Formula: K2CrO4
Molecular Weight: 194.19
Product description:Used for metal rust inhibitor, the manufacture of chromate. Used as oxidant, mordant dyeing and printing. Used in ink, paint, enamel, metal anti-corrosion, etc. Oxidation. Used in tanning, medicine, and used as a mordant and analytical reagent. Can be used for the silver nitrate titration indicator of chlorine root. With indicator method: 10 g potassium chromate in 100 ml water, with AgNO3 precipitation titration to reddish, let stand for one night. The titration end point changed from red to orange
What is Cobaltous chloride
Product name:Cobaltous chloride
CAS: 513-79-1
Molecular Formula: CCoO3
Molecular Weight: 118.9432
Product description:In the chemical production is the production of other cobalt salts and cobalt oxide materials. Ceramic industry used as colorants. Used as a dressing agent in the mining industry. Organic industrial used in the manufacture of catalysts, camouflage coating and chemical temperature indicator. Agriculture used as trace element fertilizer. Used as analytical reagent in analytical chemistry. As a manufacture cobalt oxide, lithium battery cathode material of raw materials.
CAS: 513-79-1
Molecular Formula: CCoO3
Molecular Weight: 118.9432
Product description:In the chemical production is the production of other cobalt salts and cobalt oxide materials. Ceramic industry used as colorants. Used as a dressing agent in the mining industry. Organic industrial used in the manufacture of catalysts, camouflage coating and chemical temperature indicator. Agriculture used as trace element fertilizer. Used as analytical reagent in analytical chemistry. As a manufacture cobalt oxide, lithium battery cathode material of raw materials.
How to buy Esomeprazole sodium
Product name:Esomeprazole sodium
CAS:161796-78-7
Molecular Formula: C34H36MgN6O6S2
Molecular Weight: 713.1212
Product description:(1) of gastroesophageal reflux disease Used in the treatment of reflux esophagitis and (or) of patients with severe reflux symptoms. Intravenous application of esso beauty pull azole can make erosive esophagitis cure rate reached 80%, when gastroesophageal reflux disease has difficulty swallowing, vomiting, the complications such as bleeding, vein gives esso beauty pull azole can quickly effectively inhibit gastric acid secretion, pH > 4 a long time to maintain the stomach, so as to achieve a good therapeutic effect. (2) the upper gastrointestinal bleeding For the treatment of upper gastrointestinal bleeding esophageal varices, usually in the first place under gastroscope bleeding, bleeding immediately after the successful application of drugs increase in gastric pH to 6 above, in order to promote the platelet aggregation and prevent thrombolysis, prevention of further hemorrhage. Currently accepted pH > 6 above, can rapidly improve the stomach with omeprazole 80 mg of immediate static note, after 8 mg/h to maintain an intravenous drip of acid suppression effect is more ideal. Esso beauty pull azole acid suppression effect is better than that of omeprazole and last longer, undoubtedly, it is used in the treatment of acute upper digestive.
CAS:161796-78-7
Molecular Formula: C34H36MgN6O6S2
Molecular Weight: 713.1212
Product description:(1) of gastroesophageal reflux disease Used in the treatment of reflux esophagitis and (or) of patients with severe reflux symptoms. Intravenous application of esso beauty pull azole can make erosive esophagitis cure rate reached 80%, when gastroesophageal reflux disease has difficulty swallowing, vomiting, the complications such as bleeding, vein gives esso beauty pull azole can quickly effectively inhibit gastric acid secretion, pH > 4 a long time to maintain the stomach, so as to achieve a good therapeutic effect. (2) the upper gastrointestinal bleeding For the treatment of upper gastrointestinal bleeding esophageal varices, usually in the first place under gastroscope bleeding, bleeding immediately after the successful application of drugs increase in gastric pH to 6 above, in order to promote the platelet aggregation and prevent thrombolysis, prevention of further hemorrhage. Currently accepted pH > 6 above, can rapidly improve the stomach with omeprazole 80 mg of immediate static note, after 8 mg/h to maintain an intravenous drip of acid suppression effect is more ideal. Esso beauty pull azole acid suppression effect is better than that of omeprazole and last longer, undoubtedly, it is used in the treatment of acute upper digestive.
Fentanyl price
Product name:Fentanyl
CAS: 437-38-7
Molecular Formula: C22H28N2O
Molecular Weight: 336.47
Product description:A molecular structure similar to morphine painkillers, its analgesic effect about 100 times stronger than morphine, addiction is smaller than morphine. Suitable for all kinds of pain and in the process of surgery and gynecologic surgery and surgical analgesia; Also used to prevent or mitigate delirium after surgery; Still can share, and drug as auxiliary anesthetic drugs.Suitable for all kinds of pain and in the process of surgery and gynecologic surgery and surgical analgesia; Also used to prevent or mitigate delirium after surgery; Still can share, and drug as the auxiliary anesthetic drugs; Made with droperidol compatibility "stability and analgesics," the bandage used in large and small surgery analgesia.
CAS: 437-38-7
Molecular Formula: C22H28N2O
Molecular Weight: 336.47
Product description:A molecular structure similar to morphine painkillers, its analgesic effect about 100 times stronger than morphine, addiction is smaller than morphine. Suitable for all kinds of pain and in the process of surgery and gynecologic surgery and surgical analgesia; Also used to prevent or mitigate delirium after surgery; Still can share, and drug as auxiliary anesthetic drugs.Suitable for all kinds of pain and in the process of surgery and gynecologic surgery and surgical analgesia; Also used to prevent or mitigate delirium after surgery; Still can share, and drug as the auxiliary anesthetic drugs; Made with droperidol compatibility "stability and analgesics," the bandage used in large and small surgery analgesia.
Buy Phentolamine mesylate
Product name:Phentolamine mesylate
CAS: 65-28-1
Molecular Formula: C17H19N3O.CH4O3S
Molecular Weight: 377.45792
Product description:This product is white or white crystalline powder; Odourless, taste bitter. It is easily dissolved in water or ethanol, slightly soluble in chloroform. The melting point of this product melting point (appendix Ⅵ C) for 176 ~ 181 ℃, melting and decomposition.Indications for 1. Used in the diagnosis and treatment of pheochromocytoma caused by the onset of hypertension, including resection of high blood pressure, can also according to the blood pressure response of this product is used to assist in the diagnosis of pheochromocytoma; 2. Treatment of left ventricular failure; 3. Treatment of intravenous drug norepinephrine spillover, used to prevent the skin necrosis.
CAS: 65-28-1
Molecular Formula: C17H19N3O.CH4O3S
Molecular Weight: 377.45792
Product description:This product is white or white crystalline powder; Odourless, taste bitter. It is easily dissolved in water or ethanol, slightly soluble in chloroform. The melting point of this product melting point (appendix Ⅵ C) for 176 ~ 181 ℃, melting and decomposition.Indications for 1. Used in the diagnosis and treatment of pheochromocytoma caused by the onset of hypertension, including resection of high blood pressure, can also according to the blood pressure response of this product is used to assist in the diagnosis of pheochromocytoma; 2. Treatment of left ventricular failure; 3. Treatment of intravenous drug norepinephrine spillover, used to prevent the skin necrosis.
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