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The non-ferrous industry has broad prospects for acid recovery and comprehensive utilization
Time of Update: 2022-06-25
methods for producing sulfuric acid in my country are sulphur-burning sulphuric acid, non-ferrous smelting flue gas sulphuric acid and pyrite sulphuric acid production, accounting for 45. 8%, 36. 1% and 17. 1% respectively
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What are the matters needing attention in the filling and production of nucleic acid detection reagents?
Time of Update: 2022-06-17
(8) Determine the filling speed and change the position of the belt pulley according to the adjustment results of the material viscosity and filling amount .
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Is high uric acid just to prevent gout?
Time of Update: 2022-06-15
inflammatory reactions in the body due to the crystals originally deposited in the joints due to various incentives . During a gout attack, people experience sudden pain
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Japan makes final anti-dumping ruling on Chinese phosphoric acid triester
Time of Update: 2022-06-14
/>, Zhangjiagang Fengtong Chemical Co. , Ltd. , Jiangsu Keppel Technology Co. , Ltd. , Xuancheng Juyuan Fine Chemical Co. , Ltd. , Yangzhou Chenhua New Material Co. , Ltd. , Taizhou Ruishite New
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Determination of ursolic acid in Dashanzha Pills and chlorogenic acid in Shuanghuanglian for injection (freeze-dried)
Time of Update: 2022-06-13
In addition, take an appropriate amount of ursolic acid reference substance, accurately weigh it, and add anhydrous ethanol to make a solution containing 0.
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Oleanolic acid
Time of Update: 2022-06-12
Thin layer plate silica gel GDeveloping agent chloroform- methanol (40:1)Check the color development of 10% sulfuric acid ethanol solution, heating at 105℃, inspection under ultraviolet light (254nm, 365nm) and sunlight2.
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Weilian Chemical's 1 million tons/year p-xylene and 2.5 million tons/year purified terephthalic acid and supporting engineering projects started
Time of Update: 2022-06-12
5 million tons/year purified terephthalic acid and supporting engineering project is an extension of the paraxylene industry, with a total investment of 4.
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Deoxycholic acid
Time of Update: 2022-06-11
Thin layer plate silica gel GDeveloping solvent of chloroform - ether - acetic acid (2 2: 1)Check 30% sulfuric acid ethanol solution, bake at 105℃ for 10min, check under sunlight and ultraviolet light (365nm)2.
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Glycyrrhetinic acid
Time of Update: 2022-06-11
Glycyrrhetinic acid>Clycyrrhetinic Acid>【Structural formula】 >>[Molecular
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Ursolic acid
Time of Update: 2022-06-10
>ursolic acid>【Structural formula】 >>[Molecular formula and molecular weight] C 30 H
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Aristolochic acid A
Time of Update: 2022-06-10
Thin layer plate silica gel GThe upper solution of the developing agent toluene- ethyl acetate -water- formic acid (20:10:1:1)Inspection under daylight and ultraviolet light (365nm)2.
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Fengyuan's annual production of 500,000 tons of lactic acid and 300,000 tons of polylactic acid project started
Time of Update: 2022-06-09
planned investment is 1. 5 billion yuan. The total construction area of the project is 390,000 square meters. The biological fermentation method is used to build a lactic acid production line with an annual output
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Chlorogenic acid
Time of Update: 2022-06-08
Thin layer plate silica gel GF254Developing solvent ethyl acetate - formic acid - water (10:2:3)Check under UV lamp (365nm) and (254nm)2.
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Ursodeoxycholic acid
Time of Update: 2022-06-08
Thin layer plate silica gel GDeveloping agent isooctane- ethyl acetate - glacial acetic acid (15:7:5)Check 10% sulfuric acid ethanol solution, bake at 105℃ until the spots are clear, observe under sunlight and ultraviolet light (365nm)2.
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China-led release of the first international standard for new coronavirus nucleic acid detection
Time of Update: 2022-06-07
>This is the first international standard issued by ISO specifically for the detection of the new coronavirus . >This is the first international standard
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Drinking too much tea will increase uric acid?
Time of Update: 2022-06-06
of ritual begins with "morning tea", followed by afternoon tea and night tea . Drinking tea can cultivate one's body and nourish one's body and remove the impetuousness from
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Ferulic acid
Time of Update: 2022-06-06
Thin layer plate silica gel GDeveloping agent benzene- glacial acetic acid -methanol (30:1:3)Check under UV lamp (366nm)2.
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Vanillic acid
Time of Update: 2022-06-06
Thin layer plate silica gel G plateDeveloping agent toluene- ethyl acetate - glacial acetic acid (8:4:0.
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Cinnamic acid
Time of Update: 2022-06-05
Thin layer plate silica gel GDeveloping solvent hexane - ether - acetic acid (5: 5: 0.
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Salicylic acid
Time of Update: 2022-06-04
Thin layer plate silica gel G plateDeveloping agent benzene-acetic acid-methanol (30:1:3)After checking the color development of 1% ferric chloride ethanol solution, check under sunlightHigh performance liquid chromatographyChromatographic column ZORBAX Eclipse XDB-C 18 column, 5um (4.
