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.
Pricing & pack sizes
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 |
|---|---|
| SKU | 61804883 |
| 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
Safety Data Sheets (SDS)
Available in EN.
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.
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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