Methyl Red
SIAL/250198 - ACS reagent, crystalline
Synonym: 2-
CAS Number: 493-52-7
Empirical Formula (Hill Notation): C15H15N3O2
Molecular Weight: 269.30
EC Number: 207-776-1
MDL Number: MFCD00002425
Linear Formula: (CH3)2NC6H4N=NC6H4CO2H
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 250198-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 250198-25G
| λmax | 410 nm |
| application(s) | diagnostic assay manufacturing hematology histology |
| form | crystalline |
| grade | ACS reagent |
| InChI | 1S/C15H15N3O2/c1-18(2)12- |
| InChI key | CEQFOVLGLXCDCX-WUKNDPDISA |
| mp | 179-182 °C (lit.) |
| Quality Level | 200  |
| SMILES string | CN(C)c1ccc(cc1)N=Nc2ccc |
| solubility | ethanol: 1 mg/mL |
| storage temp. | room temp |
| technique(s) | titration: suitable |
| visual transition interval | 4.2-6.2, pink to yellow |
| Application: | Methyl Red has been used as pH indicator in a glucose biosensor, which is used for salivary analysis. |
| Biochem/physiol Actions: | Methyl Red is a maroon red crystal azo dye. Methyl Red is a pH indicator and changes color at a pH of 5.5. Methyl Red is widely used in saliva sampling method. In addition, it is also employed in carbohydrate and lactic acid detection. Methyl Red has been effectively used for intrageneric differentiation of Enterobacteriaceae. |
| Packaging: | 25, 100 g in glass bottle |
| Hazard Codes | N |
| Risk Statements | 51/53 |
| Safety Statements | 61 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 2 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| mp | 179-182 °C (lit.) |
| Storage Temp. | room temp |
| Colour Index Number | 13020 |
| UNSPSC | 12171500 |