Molekula
Tropaeolin O
Tropaeolin O is a sodium salt of a synthetic azo dye used primarily as a pH indicator and in biochemical assays. It appears as a red crystalline powder and is soluble in water. CAS: 547-57-9, Molecular Formula: C12H10N2O5S.Na, Molecular Weight: 316.27 g/mol. Stable at ambient temperature. Molekula supplies Tropaeolin O from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Tropaeolin O is a sodium salt of a synthetic azo dye used primarily as a pH indicator and in biochemical assays. It appears as a red crystalline powder and is soluble in water. CAS: 547-57-9, Molecular Formula: C12H10N2O5S.Na, Molecular Weight: 316.27 g/mol. Stable at ambient temperature. Molekula supplies Tropaeolin O from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Orange - brown powder |
| Solubility | Clear, red brown solution |
| Lambda max | 487nm (in 0.1/v sodium hydroxide) |
| Visual Transition Interval | From pH 11.0 (yellow) to pH 12.7 (red) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 60 months |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| CAS Number | 547-57-9 |
| Molecular Formula | C12H10N2O5S.Na |
| Molecular Weight | 316.27 |
| SMILES | C1=CC(=CC=C1N=NC2=C(C=C(C=C2)O)O)S(=O)(=O)[O-].[Na+] |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2927.00.30.00 |
| Tariff Code | 2927000090 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Tropaeolin O used for?
Tropaeolin O is primarily used as a pH indicator in analytical chemistry and as a dye in biochemical assays.
What is the chemical formula and molecular weight of Tropaeolin O?
The formula is C12H10N2O5S.Na with a molecular weight of 316.27 g/mol.
How should Tropaeolin O be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of Tropaeolin O is available?
Molekula supplies Tropaeolin O in analytical grade.
Can Molekula supply Tropaeolin O in bulk?
Yes, Molekula can supply Tropaeolin O in bulk quantities upon request.
What documentation comes with a Tropaeolin O order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS).
Ready to order or need a custom pack?
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