METHYL RED pH INDICATOR HI-PURITY |
| Article No. | 53721 | Grade | HI-PURITY | |
| Synonyms | 2-(N,N-Dimethy-4-aminophenyl) azobenzenecarboxylic acid, Acid red 2 | C.I. No. | 13020 | |
| CAS No. | 493-52-7 | Purity | — | |
| Molecular Formula | C15H15N3O2 | Molecular Weight | 269.31 | |
| H.S. Code | 2927.0090 | Shelf Life | 60 Months | |
| Physical Properties | ||||
| Physical state at 20 °C | Solid | Colour | Dark red powder | |
| Solubility | Soluble in alcohol, acetic acid. | Odour | Odorless | |
| Melting point | 179 – 182°C | |||
| Specifications Parameters | ||||
| Description | Red, dark red to maroon to violet or purple crystals/powder. | |||
| Identification (UV-Vis spectrum) | Passes test | |||
| Melting point | 179 – 182°C | |||
| Absorption maximum
λ1 (pH 4.5) λ2 (pH 6.2) |
523 – 526 nm 427 – 437 nm |
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| Visual pH transition interval | From pH 4.2 – pink
to pH 5.5 – Orange to pH 6.2 – yellow |
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| Absorptivity (on dried subs.)
(A1%/1cm at λ1max pH 4.5) (A1%/1cm at λ2max pH 6.2) |
1330 – 1430 700 – 800
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| Clarity of alcohol solution | Passes test. | |||
| Loss on drying (at 110°C) | Max. 5.0% | |||
| Properties | Store at Room temperature, almost insoluble in water, soluble in alcohol and acetic acid. | |||
| Note(s): 1] Assay (if applicable) method mentioned.
WARNING Hazard statements: Not hazardous. No hazards. Precautionary statements Prevention: ———————————————- Response: ————————————————
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IMDG Code : —
UN No. : — IATA : — |
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| Disposal:———— | ||||
| Hazard Pictogram(s) : — | ||||
| Manufacturer | Auraiya Laboratory Chemicals Pvt Ltd | Net Packing | 25gm, 100gm |
| Country of Origin | India | Website | www.auraiyalabchem.com |
| Item model number | 53721 | Order now | sales@auraiyalabchem.com |
| Packer | Auraiya Laboratory Chemicals Pvt Ltd | Contact us | +91 879 151 1893 |
| Importer | Auraiya Laboratory Chemicals Pvt Ltd | Customer Care | info@auraiyalabchem.com |
Date- 10.11.2024
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