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Key Documents

P7884

Sigma-Aldrich

Pyrocatechol Violet

Powder

Synonym(s):

Catechol violet, Pyrocatecholsulfonphthalein

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About This Item

Empirical Formula (Hill Notation):
C19H14O7S
CAS Number:
Molecular Weight:
386.38
Beilstein:
353938
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

product name

Pyrocatechol Violet, suitable for indicator

form

powder

technique(s)

titration: suitable

mp

185 °C (dec.) (lit.)

solubility

water: 1 mg/mL

suitability

suitable for indicator

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1ccc(cc1O)C(=C2\C=CC(=O)C(O)=C2)\c3ccccc3S(O)(=O)=O

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+

InChI key

HGPSVOAVAYJEIJ-XDHOZWIPSA-N

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General description

Pyrocatechol Violet (PV) is a sulfone phthalein dye. It chelates metal ions. The metal-PV complex is bluish-violet in color.

Application

Complexometric indicator
Pyrocatechol Violet has been used in the formation of dye-metal complexes. It has also been used to determine Cu2+ chelating activity.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Colorimetric assay for ?-lactamase activity using cocktail of penicillin and 4-(2-pyridylazo)resorcinol (PAR)?2Hg2+ complex
Suji Lee
Dyes and Pigments, 137 (2017)
Lei Zhu et al.
Journal of the American Chemical Society, 127(12), 4260-4269 (2005-03-24)
Enantioselective association events between boronic acid receptors and bifunctional substrates such as alpha-hydroxycarboxylates and vicinal diols were exploited to develop enantioselective indicator-displacement assays. It was found that the sensitivity of the assay could be tuned by using either colorimetric or
Yan Wang
Colloids and surfaces. B, Biointerfaces, 88(2), 614-621 (2011-08-23)
A sensitive and selective electrochemical method was developed for simultaneous determination of uric acid (UA), xanthine (XA) and hypoxanthine (HX) based on a poly (pyrocatechol violet)/carboxyl functionalized multi-walled carbon nanotubes composite film modified electrode. The preparation and basic electrochemical performance
Marina Fidelis et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 142, 111439-111439 (2020-05-26)
The aim of this study was to evaluate the effects of different solvents and maximize the extraction of bioactive compounds from jabuticaba (Myrciaria cauliflora) seeds. In general, the solvent system composed of water and propanone (52:48 v/v) modified the extract
Qingling Xu et al.
Chemical communications (Cambridge, England), 47(46), 12497-12499 (2011-10-25)
In this study, the ensemble of pyrocatechol violet and Sn(4+) was used for dopamine detection in a neutral aqueous solution with high selectivity and sensitivity. The detection course showed three color changes, which could be observed by the naked eye.

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