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Sigma-Aldrich Cresol Red Indicator Grade
List Price $89.90 Your Price $89.90
Sigma-Aldrich Cresol Red Indicator Grade - SIAL (Additional S&H Or Hazmat Fees May Apply)
NETA PART: SIAL-114472-25G
MFG.PART: 114472-25G
UNSPSC: 12171500
Manufacturer: Sigma-Aldrich
grade
indicator grade
Quality Level
200
form
powder or crystals
composition
Dye content, 95%
technique(s)
titration: suitable
color
red-brown
pH
7.2-8.8, yellow to red
useful pH range
1.8-2.0, orange to yellow(acid)
7.0-8.8, yellow to violet(alkaline)
mp
290 °C
density
0.998 g/cm3
Related Categories
Hematology Stains
General description
Cresol Red, also known as o-cresol red, belongs to the phthalein and sulphonphthalein group of dyes. Cresol red changes color from orange to yellow at pH between 0.2-1.8 and yellow to violet at pH between 7.0-8.8. In alkaline solutions, cresol red is present as a hydrophilic dianion. The dianion is small and is violet in color, possessing a larger conjugated system than the yellow hydroxyquinone.
Application
Cresol Red is a widely used pH indicator for routine pH assessments like microbial culture media preparations. In addition, Cresol red is a suitable constituent of PCR reagent systems. Cresol Red is used as a tracking dye in DNA, RNA (agarose), and protein (polyacrylamide) electrophoresis.
wgk_germany
WGK 3
PPE
dust mask type N95 (US), Eyeshields, Gloves
| SKU | SIAL-114472-25G |
|---|---|
| Supplier Part Number | 114472-25G |
| UM | EA |
| UNSPSC | 12171500 |
| Manufacturer | Sigma-Aldrich |
| Temperature | room temp |
| ProductLine | SIAL |
| Qty | 1 |
| MinOrderQty | 1 |
| Weight | 10.000000 |
| Lead Time | 9 |
| Hazardous | Y |
| CAS Number | 1733-12-6 |
| Energy Star | No |
| Green | No |
| Controlled | N |