Molekula
Catechol Violet (Pyrocatechol Violet)- SNA
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Certificate of Analysis with every batch
Catechol Violet (Pyrocatechol Violet) is a synthetic organic dye and pH indicator, widely used in analytical chemistry for titrations, complexometric assays, and as a visual indicator in acid-base reactions due to its distinct color changes. It appears as a dark green to black powder, soluble in water and alcohol, transitioning from yellow to violet across pH 1.2–3.0. CAS 115-41-3, molecular formula C19H14O7S with a molecular weight of 386.38 g/mol. Stable at ambient conditions with no signal word required. Molekula supplies Catechol Violet from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Catechol Violet (Pyrocatechol Violet) is a synthetic organic dye and pH indicator, widely used in analytical chemistry for titrations, complexometric assays, and as a visual indicator in acid-base reactions due to its distinct color changes. It appears as a dark green to black powder, soluble in water and alcohol, transitioning from yellow to violet across pH 1.2–3.0. CAS 115-41-3, molecular formula C19H14O7S with a molecular weight of 386.38 g/mol. Stable at ambient conditions with no signal word required. Molekula supplies Catechol Violet from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Pricing & pack sizes
Specifications
| Property | Value |
|---|---|
| Appearance | Dark red, green or brown powder |
| Loss on Drying (110(C for 60 min.) | < 7% |
| Suitability as indicator for complexometry | Passes test |
| Dye content (by spectrophotometry) | > 90% |
| Solubility 0.1% (MeOH) | Clear solution |
| Absorptivity (A 1%/1 cm) in methanol | > 380 |
| Absorption Maximum (in MeOH) | 442-446 nm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90038262 |
| CAS Number | 115-41-3 |
| Molecular Formula | C19H14O7S |
| Molecular Weight | 386.38 |
| SMILES | - |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2934.99.9001 |
| Tariff Code | 2934999090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Portuguese, Spanish.
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 Catechol Violet (Pyrocatechol Violet) used for?
Catechol Violet is primarily used as a pH indicator in analytical chemistry, particularly in the range of pH 1.2–2.8, transitioning from yellow to violet. It is also employed in some biochemical assays and as a stain in microscopy.
What is the chemical formula and molecular weight of Catechol Violet?
The chemical formula is **C19H14O7S**, and the molecular weight is **386.38 g/mol**.
How should Catechol Violet be stored?
Store Catechol Violet at **ambient temperature** in a tightly sealed container, away from moisture and direct sunlight.
What grades or purities of Catechol Violet does Molekula supply?
Molekula supplies **analytical grade** Catechol Violet, suitable for laboratory and research applications requiring high purity.
Can Molekula supply Catechol Violet in bulk quantities?
Yes, Molekula can provide Catechol Violet in **bulk quantities** upon request, subject to availability and order specifications.
What documentation comes with an order of Catechol Violet?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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