114472
甲酚红
indicator grade, Dye content 95 %
别名:
邻甲酚磺酰酞
等级
indicator grade
质量水平
表单
powder or crystals
组成
Dye content, 95%
技术
titration: suitable
颜色
red-brown
pH值（酸碱度）
7.2-8.8, yellow to red
有效pH范围
1.8-2.0, orange to yellow(acid)
7.0-8.8, yellow to violet(alkaline)
mp
290 °C
密度
0.998 g/cm3
λmax
367 nm (2nd)
570 nm
应用
diagnostic assay manufacturing
hematology
histology
储存温度
room temp
SMILES字符串
Cc1cc(ccc1O)C2(OS(=O)(=O)c3ccccc23)c4ccc(O)c(C)c4
InChI
1S/C21H18O5S/c1-13-11-15(7-9-18(13)22)21(16-8-10-19(23)14(2)12-16)17-5-3-4-6-20(17)27(24,25)26-21/h3-12,22-23H,1-2H3
InChI key
OBRMNDMBJQTZHV-UHFFFAOYSA-N
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一般描述
甲酚红(Cresol Red)，又名邻甲酚红，属于酞和磺酞类染料。在pH 0.2-1.8之间，甲酚红由橙色变为黄色，在pH 7.0-8.8之间，由黄色变为紫色。在碱性溶液中，甲酚红为亲水性双阴离子。双阴离子形式为小分子，呈紫色，具有比黄色羟醌形式更大的共轭结构。
应用
甲酚红广泛用作pH指示剂，用于微生物培养基等的日常pH监测。此外，甲酚红也适合用作PCR反应体系的试剂组分。甲酚红还可用作DNA、RNA（琼脂糖）和蛋白（聚丙烯酰胺）凝胶电泳的示踪染料。
储存分类代码
11 - Combustible Solids
WGK
WGK 3
个人防护装备
dust mask type N95 (US), Eyeshields, Gloves
Atsushi Seki et al.
Analytica chimica acta, 582(1), 154-157 (2007-03-28)
Novel spectroscopic sensor based on a hetero-core structured fiber optic is described in this paper. The hetero-core structured fiber optic consists of multi mode fibers and a short piece of single mode fiber which was inserted in the multi mode
Paula C A Jerónimo et al.
The Analyst, 130(8), 1190-1197 (2005-07-16)
An optical biosensor based on immobilised carbonic anhydrase and its application to the determination of the anti-glaucoma agent acetazolamide by enzyme inhibition measurements, is described. The enzyme and a pH indicator dye, cresol red, were physically immobilised in overlapped sol-gel
K Horie et al.
Analytical biochemistry, 137(1), 80-87 (1984-02-01)
A highly sensitive quantitative method was developed to detect protons released or taken up upon ligand binding. A small change in pH due to proton release or uptake was detected by measuring the difference in the absorbance of a pH
K Schilling et al.
Clinical chemistry, 39(2), 251-256 (1993-02-01)
If buffer/indicator systems are used as optical thermometers in multicuvettes, the temperature resolution is limited by errors of optical measurements produced mainly by variations of pathlength and blank transmittance of the wells. Theoretical and practical approaches show that, in multicuvettes
K Elamrani et al.
Biochimica et biophysica acta, 727(1), 22-30 (1983-01-05)
The kinetics of H+/OH- diffusion across dimyristoyl phosphatidic acid bilayer membranes was measured by following the absorbance of the pH-sensitive indicator Cresol red (o-cresolsulfonphthalein) entrapped in single lamellar vesicles after rapidly changing the external pH in a stopped-flow apparatus. The
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