105945
酚酞
ACS reagent
别名:
3,3-双(4-羟基苯基)-1(3H)-异苯并呋喃酮
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关于此项目
经验公式（希尔记法）:
C20H14O4
化学文摘社编号:
分子量:
318.32
EC Number:
201-004-7
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
MDL number:
Colour Index Number:
764
Beilstein/REAXYS Number:
284423
InChI key
KJFMBFZCATUALV-UHFFFAOYSA-N
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
SMILES string
Oc1ccc(cc1)C2(OC(=O)c3ccccc23)c4ccc(O)cc4
grade
ACS reagent
form
powder
technique(s)
titration: suitable
visual transition interval
8.0-10, colorless to red
Quality Level
solubility
acetone: soluble
density
1.27 g/cm3 at 32 °C
λmax
374 nm (2nd), 552 nm
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
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General description
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。
Application
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
Biochem/physiol Actions
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。
酚酞在酸性溶液中无色，在碱性溶液中变成粉红色。
signalword
Danger
hcodes
Hazard Classifications
Carc. 1B - Muta. 2 - Repr. 2 - Skin Irrit. 2
存储类别
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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