Sulfapyridine Melting Point Standard 货号: YZ-1635002 品牌: 美国USP 暂无详情 产品简介 CAS144-83-2 单位瓶 货期4-6周 规格1g Vanillin Melting Point Standard 发表于2024年12月8日由上海金畔生物科技有限公司 Vanillin Melting Point Standard 货号: ...
3.2.1.1 Melting point Melting point is a valuable criterion of evaluation of any changes in the structure of an organic compound. The formation of prodrug is characterized by a change in melting point which is generally significantly different from that of either pure drug or lipid. The addition...
【Melting Point】270 【Vapor Pressure】7314 (100 C) 【Density】2.159 g/cm3 (20 C) 【pKa/pKb】(1) 6.37, (2) 10.25 (carbonic (at 25℃) (pKa) 【Usage】In manufacture of many sodium salts, source of carbon dioxide, in effervescent salts, beverages, cleaning compound. First Aid Measures...
Melting Point Questions and Answers - Practice questions, MCQs, PYQs, NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions, and PDF Questions with answers, solutions, explanations, NCERT reference, and difficulty leve
the filtrate is acidified with concentrated hydrochloric acid to precipitate the precipitate of benzoic acid, and the crude product is obtained by Suction filtration. The crude product was recrystallized with water. It was dried in a boiling water bath, weighed and measured for its melting point. ...
10wt% of sodium carbonate is added continuously, then the melting point is raised to about 110 DEG C, while the decomposition temperature is raised by nearly 20 DEG C.马重芳吴玉庭任楠
Salt HydrateMelting Point (oC)Latent Melting Heat (MJ/m3) CaCl2(Calcium Chloride) 6H2O29281 Na2SO4(Sodium Sulfate) 10H2O32342 Na2CO3(Sodium Carbonate) 10H2O33360 Na2HPO4(Dibasic Sodium Orthophosphate) 12H2O35205 Na2HPO4(Dibasic Sodium Orthophosphate) 7H2O48302 ...
The melting point of barium carbonate (BaCO3) was determined at pressures up to 11 GPa using the ionic conductivity and platinum (Pt) sphere methods in a multi-anvil press. The melting point decreases with pressure from 2149 ± 50 K at 3 GPa to a fitted local minimum of 1849 K at 5.5...
Experimental measurements of the melting curves have benefited greatly from the development of the laser-heated diamond-anvil cell. Shock wave experiments, while useful, provide only a single melting point at an uncertain temperature. Early theoretical models of melting were based on experiments with ...
Melting point:782ºC.Boiling point: above1600ºC. Good hygroscopic property, easy to deliquesce in the air. Soluble in water, meanwhile release a mass of heat, aqueous solution is subacidity. Soluble in alcohol, acetone, acetic acid. Act with ammonia ethyl alcohol...