Methyl Yellow Indicator PurReagent 98.0%
PurReagent
Properties
| Vapour pressure | 3 x 10-7 mmHg |
| Assay Purity | > 98% |
| Refractive index | n20/D 1.577 |
| B pt. | 356.8°C |
| M pt. | 114°C |
| Density | 1.1303 |
| Form | Solid |
Safety Information
| Hazard Statement(s) | H301,H351 |
| Precautionary Statement | P202 - P264 - P280 - P301 + P310 - P405 - P501 |
| GHS Pictogram |
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| Signal word | Danger |
| HS Code | 29270000 |
| Storage Temp. | Store at Room Temperature |
| Storage Class | 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects |
| UN Number | 2811 |
Description
Application
It is primarily applied as a pH indicator (red below pH 2.9 yellow above pH 4.0) in non-aqueous titrations for staining in microscopy and historically in coloring polishes waxes and soaps.
Purpose
Its main purpose is as an acid-base indicator due to its color change in acidic conditions and as a fat-soluble dye for analytical detection though its carcinogenic nature limits modern use.
General Description
Methyl yellow also known as 4-(dimethylamino)azobenzene or Butter Yellow (CAS 60-11-7) is a synthetic azo dye with the formula CHN appearing as yellow to orange crystalline powder melting at 111116C with low water solubility (13.6 mgL) and density around 1.0 gcm
Documents
| SDS | |
| COA | |
| Specification | |
| Bulk quote order form | |
| Sample COA |