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  A-1 AA. 醋酸酐 A-2 Activated Alumina 活性氧化鋁 A-3 Adipic Acid 己二酸 A-4 Al(OH)3 氫氧化鋁 A-5 Alumina 鋁粉 A-6 Alumina Sulfate 硫酸鋁 A-7 Aluminum Chloride 氯化鋁 A-8 Ammonium Molybdate 鉬酸銨 A-9 Ammonium Thiocyanate 硫氰化銨 A-10 2,2'-Azobis ...
  
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高瞻自然科學教學資源平台

日期：2024-07-18

水楊酸（salicylic acid, 2-hydroxybenzoic acid）台北市立第一女子高級中學二年級張綉芸/台北市立第一女子高級中學化學科周芳妃老師/國立台灣師範大學化學系葉名倉教授責任編輯水楊酸的結構與性質水楊酸（salicylic acid）學名為鄰羥基苯甲酸（2 ......

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對羥基苯甲酸酯 - 維基百科，自由的百科全書

日期：2024-07-18

對羥基苯甲酸酯（英語：Paraben）是一類用在化妝品及藥品工業中的防腐劑，有時也會被用在食品添加劑中，它的鹽及化合物最初則用作殺細菌及殺真菌劑。在洗髮水、商業潤膚膏、刮鬍膏、人體潤滑劑、外用藥品、噴霧溶劑、化妝品[1]和牙膏中均可找到 ......

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Ester - Wikipedia, the free encyclopedia

日期：2024-07-16

In chemistry, esters are chemical compounds derived from an acid (organic or inorganic) in which at least one -OH (hydroxyl) group is replaced by an -O-alkyl (alkoxy) group.[1] Usually, esters are derived from a carboxylic acid and an alcohol. Esters comp...

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4-Hydroxybenzoic acid - Wikipedia, the free encyclopedia

日期：2024-07-11

4-Hydroxybenzoic acid is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid. It is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols and acetone. 4-Hydroxyb...

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269. Hydroxybenzoate, p- ethyl, methyl, propyl esters (WHO Food Additives Series 5)

日期：2024-07-14

Toxicological evaluation of some food additives including anticaking agents, antimicrobials, antioxidants, emulsifiers and thickening agents WHO FOOD ADDITIVES SERIES NO. 5 The evaluations contained in this publication were prepared by the Joint FAO/WHO ....

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Hydrolysis of 4-Hydroxybenzoic Acid Esters (Parabens) and Their Aerobic Transformation into Phenol b

日期：2024-07-11

Growth conditions. Solid medium containing paraben crystals was prepared by autoclaving tryptic soy agar, and while still hot, methylparaben (5 g liter −1) or propylparaben (1 g liter −1) was added. Immediately after pouring, the petri dishes were cooled ...

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Ashu Organics (India) Pvt. Ltd. manufacturer & exporters of P-aminobenzoic acid-C.A.S. No 150-13-0 ,

日期：2024-07-12

Name Of Product C.A.S. No 1. P-aminobenzoic acid 150-13-0 2. 4-Amino benzoic acid, methyl ester 619-45-4 3. 2 Amino 6 Chloro 4 Nitro Phenol 6358-09-4 4. 6-Chloro Metanilic Acid 98-36-2 5. ortho Nitro Aniline Para Sulfonic Acid 5042-33 ......

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Welcome to Pyrazine Specialties

日期：2024-07-16

For almost 40 years, Pyrazine Specialties has been meeting the needs of the flavor and fragrance industry. Intro to Pyrazines Search by Category Alkylpyrazines Methoxypyrazines Methylthiopyrazines Quinoxalines Acetylpyrazines Pyrroles Pyridines Thiazoles...

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