ChemicalBook >> CAS DataBase List >>Pyrocatechol Violet
Pyrocatechol Violet
- CAS No.
- 115-41-3
- Chemical Name:
- Pyrocatechol Violet
- Synonyms
- CATECHOL VIOLET;Catechol vloiet;PyrocatecholViole;Catechol Violet AR;PYROCATECHOL VIOLET;PyrocatecholVioletGr;suitable for indicator;Catecholsulfonphthalein;CATECHOLSULFONAPHTHALEIN;Pyrocatechol violet (6CI)
- CBNumber:
- CB5423604
- Molecular Formula:
- C19H14O7S
- Molecular Weight:
- 386.38
- MDL Number:
- MFCD00005868
- MOL File:
- 115-41-3.mol
- MSDS File:
- SDS
- TDS File:
- TDS
Last updated:2026-05-28 04:12:55
| Melting point | 185 °C (dec.)(lit.) |
|---|---|
| Boiling point | 659.5±55.0 °C(Predicted) |
| Density | 1.632±0.06 g/cm3(Predicted) |
| storage temp. | -20°C Freezer, Under inert atmosphere |
| solubility | H2O: 1 mg/mL, clear, red |
| form | Metallic or Crystalline Powder |
| pka | 7.21±0.10(Predicted) |
| color | Dark red-brown |
| PH Range | 6.0(YELLOW)-7.0(PURPLE)-9.0(PURPLISH RED) |
| Water Solubility | Soluble in water, ethylene glycol, monomethyl ether and ethanol. |
| BRN | 353938 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Major Application |
diagnostic assay manufacturing hematology histology |
| InChI | 1S/C19H14O7S/c20-14-7-5-11(9-16(14)22)19(12-6-8-15(21)17(23)10-12)13-3-1-2-4-18(13)27(24,25)26/h1-10,20,22-23H,(H,24,25,26)/b19-12+ |
| InChIKey | HGPSVOAVAYJEIJ-XDHOZWIPSA-N |
| SMILES | Oc1ccc(cc1O)C(=C2\C=CC(=O)C(O)=C2)\c3ccccc3S(O)(=O)=O |
| CAS DataBase Reference | 115-41-3(CAS DataBase Reference) |
| EPA Substance Registry System | 1,2-Benzenediol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis- (115-41-3) |
| UNSPSC Code | 12171500 |
| NACRES | NA.47 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P271-P280 | |||||||||
| PPE | Eyeshields, Gloves, type N95 (US) | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 24/25 | |||||||||
| WGK Germany | 3 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 32041900 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 |
|||||||||
| NFPA 704 |
|
Pyrocatechol Violet price More Price(40)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | P7884 | Pyrocatechol Violet suitable for indicator | 115-41-3 | 5g | $93.1 | 2026-04-30 | Buy |
| Sigma-Aldrich | P7884 | Pyrocatechol Violet suitable for indicator | 115-41-3 | 10g | $163 | 2026-04-30 | Buy |
| TCI Chemical | P0568 | Pyrocatechol Violet | 115-41-3 | 1g | $24 | 2026-04-30 | Buy |
| TCI Chemical | P0568 | Pyrocatechol Violet | 115-41-3 | 5g | $59 | 2026-04-30 | Buy |
| Usbiological | 267581 | Catechol Violet (Pyrocatechol Violet) | 115-41-3 | 10g | $343 | 2026-06-03 | Buy |
Pyrocatechol Violet Chemical Properties,Uses,Production
Chemical Properties
greenish yellow powder
Uses
A complexometric indicator.
Uses
Pyrocatechol Violet is a complexometric indicator dye. This phthalein dye chelates metals to form blue to blue-violet complexs. It is also a pH indicator with a transition interval from 0 - 8 (red to violet). It is known to be unstable when alkaline. The stability is improved at a neutral pH. When the pH is between 2-7 the color may be yellow. Dyes and metabolites.
Purification Methods
It is recrystallised from glacial acetic acid. It is very hygroscopic and is an indicator standard for metal complex titrations. [Mustafin et al. Zh Anal Khim 22 1808 1967, Beilstein 19/3 V 703.]
Global( 281)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shanghai Biological Technology Development Co., Ltd. | 021-69955236-807 13918189704 | chinaruji@chinaruji.com | China | 5093 | 55 |
| BIOISCO(Lianyungang, Jiangsu) Biotechnology Co., Ltd | 18082049515 | 2757382053@qq.com | China | 2995 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Syntechem Co.,Ltd | info@syntechem.com | China | 12973 | 57 | |
| Sichuan Kulinan Technology Co., Ltd | 400-1166-196 18981987031 | cdhxsj@163.com | China | 11674 | 57 |
| Tianjin heowns Biochemical Technology Co., Ltd. | 400 638 7771 | sales@heowns.com | China | 14412 | 57 |
View Lastest Price from Pyrocatechol Violet manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2019-07-06 | Pyrocatechol Violet
115-41-3
|
$1.00 | 1G | 99% | 100KG | Career Henan Chemical Co |
-
- Pyrocatechol Violet
115-41-3
- $1.00
- 99%
- Career Henan Chemical Co
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suitable for indicator
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CATECHOL VIOLET
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115-41-3
C19H14O7S
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