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等級
ACS reagent
品質等級
形狀
powder
技術
titration: suitable
visual transition interval
8.0-10, colorless to red
mp
261-263 °C (lit.)
溶解度
acetone: soluble
密度
1.27 g/cm3 at 32 °C
λmax
374 nm (2nd)
552 nm
應用
diagnostic assay manufacturing
hematology
histology
儲存溫度
room temp
SMILES 字串
Oc1ccc(cc1)C2(OC(=O)c3ccccc23)c4ccc(O)cc4
InChI
1S/C20H14O4/c21-15-9-5-13(6-10-15)20(14-7-11-16(22)12-8-14)18-4-2-1-3-17(18)19(23)24-20/h1-12,21-22H
InChI 密鑰
KJFMBFZCATUALV-UHFFFAOYSA-N
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一般說明
酚酞是酸碱滴定反应的指示剂。在pH 8.3-9.8之间，颜色呈无色至紫红色，极强酸溶液中红色，极强碱溶液中无色。
在中性水溶液中为非离子的亲脂性内酯。它在碱性溶液中以亲水性二价阴离子的形式存在。
在中性水溶液中为非离子的亲脂性内酯。它在碱性溶液中以亲水性二价阴离子的形式存在。
應用
酚酞常用作生物和医学领域中的指示剂。用途：
- 开发新技术监测真空冷冻干燥过程
- 混凝土碳化深度的测定
- 使用液体弹珠感知环境气体组分
- 醋中总酸含量的测定
- 化学去皮后，土豆中浸入氢氧化钠的检测
- 作为模式有机物，用于检测各种环糊精材料的捕获效率，例如纳米纤维-环糊精
生化／生理作用
酚酞在酸性溶液中无色，在碱性溶液中变成粉红色。
原則
pH改变或水分子结构变化都会导致酚酞结构改变。 在中性水溶液中为非离子的亲脂性内酯，在碱性溶液中为亲水性双阴离子。
訊號詞
Danger
危險分類
Carc. 1B - Muta. 2 - Repr. 2 - Skin Irrit. 2
儲存類別代碼
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
水污染物質分類（WGK）
WGK 3
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
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