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Thermo Scientific Chemicals Methyl Yellow, indicator
Description
Methyl Yellow used as a pH indicator. It is an acid-base indicator that changes color from below pH 2.9 red to above pH 4.0 yellow and vice versa. Typical use is in the titration of a weak base with a strong acid.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
Methyl Yellow used as a pH indicator. It is an acid-base indicator that changes color from below pH 2.9 red to above pH 4.0 yellow and vice versa. Typical use is in the titration of a weak base with a strong acid.
Solubility
Insoluble in water. Soluble in alcohol.
Notes
Transition interval: pH 2.9 (red) to pH 4.0 (yellow)
Specifications
Specifications
| Melting Point | 110°C to 112°C (decomposition) |
| Odor | Odorless |
| Quantity | 25 g |
| UN Number | UN2811 |
| Beilstein | 746016 |
| Merck Index | 14,3229 |
| Solubility Information | Insoluble in water; Soluble in alcohol. |
| IUPAC Name | N,N-dimethyl-4-phenyldiazenylaniline |
| Formula Weight | 225.3 |
| Chemical Name or Material | Methyl Yellow, indicator |
Safety and Handling
- Danger
- Acute toxicity Category 3
- Carcinogenicity Category 2
- H301-Toxic if swallowed.
- H351-Suspected of causing cancer.
- P201-Obtain special instructions before use.
- P264-Wash face, hands and anyexposed skin thoroughly after handling.
- P280-Wear protective gloves/protective clothing/eye protection/face protection.
- P301+P310-IF SWALLOWED: Immediately call a POISON CENTER/doctor /
- P308+P313-IF exposed or concerned: Get medical advice/attention.
- MIXTURE LIST-Contains : N,N-dimethyl-4-(phenylazo)benzenamine
RUO – Research Use Only
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