Yahoo奇摩 網頁搜尋

  1. 杏仁酸 相關

    廣告
  2. 兩件47折買了絕對不後悔!有果深層乳液坐鎮,前胸後背的惱人顆粒、臉上的粗孔粉刺通通滾邊去. 果煥膚霸主YYDS!添加15%甘醇,養皮超有感,持續使用不只顆粒變少了,肌膚更是滑嫩出新高度

搜尋結果

  1. Mandelic acid is an aromatic alpha hydroxy acid with the molecular formula C 6 H 5 CH (OH)CO 2 H. It is a white crystalline solid that is soluble in water and polar organic solvents. It is a useful precursor to various drugs. The molecule is chiral. The racemic mixture is known as paramandelic acid .

    • C₈H₈O₃
    • 152.149 g·mol−1
    • 119 °C (246 °F; 392 K) optically pure: 132 to 135 °C (270 to 275 °F; 405 to 408 K)
    • 15.87 g/100 mL
  2. Ethylenediaminetetraacetic acid ( EDTA ), also called EDTA acid after its own abbreviation, is an aminopolycarboxylic acid with the formula [CH 2 N (CH 2 CO 2 H) 2] 2. This white, water-insoluble solid is widely used to bind to iron (Fe 2+ /Fe 3+) and calcium ions (Ca 2+ ), forming water-soluble complexes even at neutral pH.

    • C₁₀H₁₆N₂O₈
    • 200-449-4
    • 0.860 g cm−3 (at 20 °C)
    • 292.244 g·mol−1
  3. en.wikipedia.org › wiki › Citric_acidCitric acid - Wikipedia

    Natural occurrence and industrial production Lemons, oranges, limes, and other citrus fruits contain high concentrations of citric acid. Citric acid occurs in a variety of fruits and vegetables, most notably citrus fruits.Lemons and limes have particularly high concentrations of the acid; it can constitute as much as 8% of the dry weight of these fruits (about 47 g/L in the juices).

  4. en.wikipedia.org › wiki › Amino_acidAmino acid - Wikipedia

    Amino acid. Structure of a typical L -alpha-amino acid in the "neutral" form. Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. [1] Although over 500 amino acids exist in nature, by far the most important are the 22 α-amino acids incorporated into proteins. [2]

  5. en.wikipedia.org › wiki › Acetic_acidAcetic acid - Wikipedia

    Properties. Production. Uses. Reactions. Health and safety. See also. Notes. References. External links. Acetic acid / əˈsiːtɪk /, systematically named ethanoic acid / ˌɛθəˈnoʊɪk /, is an acidic, colourless liquid and organic compound with the chemical formula CH3COOH (also written as CH3CO2H, C2H4O2, or HC2H3O2 ).

  6. en.wikipedia.org › wiki › Almond_tofuAlmond tofu - Wikipedia

    Almond tofu ( Chinese and Japanese: 杏仁豆腐; pinyin: xìngrén dòufǔ; Cantonese Jyutping: hang6 jan4 dau6 fu6; rōmaji: an'nindōfu) is a soft, jellied dessert made of apricot kernel milk, agar, and sugar popular throughout East Asia. The name "tofu" here refers to "tofu-like solid"; soy beans, which are the main ingredient of tofu, are not used. [1] .

  7. en.wikipedia.org › wiki › Acrylic_acidAcrylic acid - Wikipedia

    Acrylic acid (IUPAC: propenoic acid) is an organic compound with the formula CH2=CHCOOH. It is the simplest unsaturated carboxylic acid, consisting of a vinyl group connected directly to a carboxylic acid terminus. This colorless liquid has a characteristic acrid or tart smell. It is miscible with water, alcohols, ethers, and chloroform. More ...

  1. 其他人也搜尋了