Description

Thymol Violet is a high-purity, synthetic organic compound widely used as a versatile pH indicator and biological stain. Its distinct color transition across a broad pH range makes it an essential analytical reagent for precise endpoint detection in titrations and laboratory research. This product is critical for professionals in analytical chemistry, life sciences, and industrial quality control laboratories seeking reliable and consistent performance.

Application

• pH Indicator in Titrations: Used for visual endpoint determination in acid-base titrations, particularly in non-aqueous or specific pH range analyses.
• Biological Staining: Employed in microbiology and histology for staining tissues and microorganisms to enhance contrast under microscopy.
• Analytical Chemistry Reagent: Serves as a key component in the preparation of test solutions and buffer systems for chemical analysis.
• Research & Development: Utilized in academic and industrial R&D for experimental protocols requiring precise pH monitoring.
• Educational Laboratories: A standard reagent in university and training labs for teaching principles of acid-base chemistry and indicator use.
• Quality Control Testing: Applied in pharmaceutical and chemical manufacturing for in-process checks and final product testing.

Basic Information

Item	Detail
Product Name	Thymol Violet
CAS No.	7512-38-1
Molecular Formula	C27H30O5S
Molecular Weight	466.59 g/mol
Synonyms	Thymolsulfonephthalein; Thymol Blue (Note: Thymol Blue is a distinct but related compound, often confused); 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[5-methyl-2-(1-methylethyl)phenol] S,S-dioxide; 3',3''-Bis[N,N-di(carboxymethyl)aminomethyl]thymolsulfonephthalein (complex form); Acid-base indicator; pH indicator; ThyV
EINECS	Contact for details

Quality Control

Our Thymol Violet is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification, assay, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from incompatible materials. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark green powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
pH Transition Range	1.2 (Red) - 2.8 (Yellow); 8.0 (Yellow) - 9.6 (Blue)
Solubility	Soluble in ethanol, alkali; slightly soluble in water

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.