Ar Thymol Blue
Analytical pH Indicator
Analytical Reagent

Thymol Blue

Analytical Reagent grade Thymol Blue manufactured for pH indicator applications, acid-base titrations, and analytical chemistry. Our AR grade indicator provides reliable color change properties for endpoint detection, pH measurements, and analytical determinations in research and quality control applications.

  • Analytical Grade Purity
  • pH Indicator
  • Acid-Base Titrations
  • Endpoint Detection
  • Quality Control
  • Research Laboratory Use
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Technical Specifications

Chemical Name: Thymol Blue
IUPAC Name: 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(propan-2-yl)phenol)
CAS Number: 76-61-9
Molecular Formula: C27H30Br2O5S
Molecular Weight: 598.4 g/mol
Purity: ≥99.0% (AR Grade)
Physical State: Brown to green powder
pH Range: 1.2-2.8 (red-yellow), 8.0-9.6 (yellow-blue)
Transition Colors: Red → Yellow → Blue
Solubility (Water): Slightly soluble
Solubility (Ethanol): Soluble
Storage Temperature: 15-30°C, protect from light
Packaging: 25g, 100g, 250g bottles
Stability: Stable under normal conditions

Applications

pH Indicator
Acid-Base Titrations
Endpoint Detection
Analytical Chemistry
Quality Control
Buffer Solutions
Educational Laboratories
Process Control
Research Applications
Pharmaceutical Testing
Water Analysis
Environmental Testing

Industry-Specific Grades

DRAVYOM offers specialized thymol blue grades tailored for specific analytical and industrial requirements, ensuring optimal performance and regulatory compliance across diverse laboratory applications.

AR Grade (Analytical Reagent)
Purity: ≥99.0% Clear color transitions pH range: 1.2-2.8, 8.0-9.6 Application: General analytical procedures
Indicator Grade
Standardized pH range Sharp color change High sensitivity Application: Precision titrations
Buffer Grade
Optimized for buffer solutions Stable formulation Extended shelf life Application: pH buffer systems
Educational Grade
Student-safe formulation Clear instructions Bulk packaging Application: Teaching laboratories

Quality Standards

DRAVYOM's AR Grade Thymol Blue is manufactured under stringent quality control protocols, meeting international analytical standards including ACS, USP, EP, and pharmacopoeia specifications. Our analytical-grade production ensures consistent performance and regulatory compliance.

ISO 9001:2015 Certified Manufacturing
ACS Indicator Grade Specifications
≥99.0% Purity Guarantee
Color Transition Validation
Superior pH Indication
Batch-to-Batch Consistency
Traceable Certificate of Analysis
Light-Protected Logistics

Advanced Chemical Properties & Performance

AR Grade Thymol Blue exhibits exceptional chemical properties essential for pH indication applications. Its ultra-pure composition and precise formulation ensure reliable performance in demanding analytical procedures and research applications.

Analytical Properties
First Transition: pH 1.2-2.8
Second Transition: pH 8.0-9.6
Color Changes: Red-Yellow-Blue
pKa Values: 1.5 and 8.9
Physical Properties
Appearance: Green powder
Molecular Weight: 466.6 g/mol
Solubility: Ethanol/water soluble
Melting Point: 221-224°C
Analytical Performance
Color Intensity: High
Transition Sharpness: ±0.2 pH units
Temperature Coefficient: Low
Stability: 3 years dry storage
Purity Specifications
Indicator Purity: ≥99.0%
Water Content: ≤0.5%
Chloride: ≤0.01%
Heavy Metals: ≤0.001%
Stability Properties
Shelf Life: 3 years (dry)
Light Sensitivity: Store in dark
Temperature Range: 15-25°C storage
pH Stability: Stable across range

Performance Characteristics

Detailed performance metrics demonstrate AR Grade Thymol Blue superiority in pH indication applications with exceptional color transitions, precision, and reproducibility across diverse analytical procedures and testing protocols.

Dual pH Range

Two distinct transition ranges

Versatile analytical applications
Color Intensity

High color contrast transitions

Clear visual endpoints
Transition Sharpness

Precise pH change detection

Accurate analytical endpoints
Temperature Stability

Low temperature coefficient

Consistent performance
Batch Reproducibility

Consistent color transitions

Reliable lot-to-lot performance
Chemical Stability

Stable across pH range

Extended analytical reliability

Safety Information

Generally safe organic indicator with minimal hazards. Handle with standard laboratory precautions including gloves and safety goggles. Avoid inhalation of powder and ensure proper ventilation when preparing solutions. Use appropriate handling procedures for organic compounds.

Low Hazard
Avoid Inhalation
Eye Protection

Storage & Handling

Store in original containers in a cool, dry place away from direct sunlight and moisture. Keep containers tightly closed and protect from light exposure. Store in well-ventilated areas and ensure proper handling procedures for organic indicators.

Cool storage (15-25°C)
Protect from light
Airtight containers
Protect from moisture

Chemical Mechanisms & Reaction Pathways

Thymol blue demonstrates dual-range pH indicator properties through protonation-deprotonation mechanisms, enabling precise pH determinations with distinctive color transitions for analytical titrations and buffer characterizations.

Dual pH Range

Red-yellow transition (pH 1.2-2.8) and yellow-blue transition (pH 8.0-9.6)

Two distinct pH transition ranges
Protonation Equilibrium

Sulfonphthalein indicator with pH-dependent color changes

Precise pH-dependent equilibria
Versatile Applications

Suitable for both acidic and basic titration endpoint detection

Wide analytical utility range
Sharp Transitions

Clear color changes enable precise endpoint determinations

High analytical precision

Regulatory Compliance & Documentation

Comprehensive regulatory compliance ensures global laboratory access with complete documentation packages supporting international analytical standards and pH indicator method validations.

ACS Specifications

American Chemical Society indicator standards compliance

ISO 3696 Standard

International standard for analytical grade reagent specifications

USP Grade Available

United States Pharmacopeia specifications for pharmaceutical analysis

REACH Registration

European Union chemical regulation compliance

ASTM Method Support

American Society for Testing Materials analytical protocols

SDS Documentation

Multi-language Safety Data Sheets (16 sections, GHS compliant)

Technical Support & Value-Added Services

DRAVYOM's analytical chemistry team provides comprehensive pH indicator method support, troubleshooting assistance, and analytical services to optimize thymol blue performance in your specific applications.

pH Method Development
  • pH titration optimization
  • Indicator concentration adjustment
  • Endpoint detection enhancement
  • Buffer characterization
Analytical Services
  • Indicator purity verification
  • pH transition testing
  • Color stability assessment
  • Method validation support
Technical Support
  • pH indicator troubleshooting
  • Indicator solution preparation
  • Laboratory protocol development
  • Quality control guidance
Supply Solutions
  • Consistent indicator quality
  • Emergency supply arrangements
  • Custom concentration options
  • Light-protected distribution

Environmental Impact & Sustainability

Our thymol blue production emphasizes environmental responsibility through sustainable manufacturing practices, solvent recovery systems, and comprehensive environmental impact management for analytical operations.

Solvent Recovery

Advanced solvent recovery and recycling systems

Waste Minimization

Optimized synthesis reducing waste generation

Clean Production

Controlled manufacturing with emission monitoring

Safe Disposal

Environmentally safe disposal protocols

ISO 14001

Environmental management system certified production

Green Chemistry

Research into environmentally safer indicator alternatives

Manufacturing Excellence & Quality Control

DRAVYOM's state-of-the-art indicator manufacturing facility employs advanced synthesis technology with continuous monitoring systems to ensure consistent thymol blue quality and performance across all production batches.

Synthesis Process

Controlled sulfonphthalein synthesis with high-purity precursors

Maximum color transition sharpness
Quality Testing

Comprehensive analysis including pH transition verification and spectroscopic analysis

Colorimetric and pH validation
Quality Systems

ISO 9001:2015 quality management with indicator certification

Continuous improvement and analytical validation
Packaging Control

Light-protected containers with moisture control and contamination prevention

Indicator stability and color preservation

Market Applications & Performance Data

Comprehensive analytical laboratory data demonstrating thymol blue effectiveness across diverse applications with quantified performance metrics and pH indicator method validations.

pH Indication
Range 1: pH 1.2-2.8 (red-yellow) Range 2: pH 8.0-9.6 (yellow-blue) Precision: ±0.1 pH unit accuracy
Educational Institutions
Curriculum Support: 200+ pH protocols Reproducibility: >99% consistent results Teaching Value: Dual-range pH demonstration
Analytical Labs
Reliability: 99.9% batch consistency Efficiency: Clear color transitions Versatility: Multiple pH range applications

DRAVYOM Competitive Advantages

Dual-Range Excellence

Consistently sharp color transitions in both acidic and basic pH ranges for precise analytical determinations

Reliable Supply

Guaranteed availability with strategic inventory management and specialized production scheduling

Analytical Expertise

Dedicated analytical chemistry team provides pH method development and indicator optimization support

Quality Assurance

Traceable certificates with comprehensive pH transition validation and analytical method support

Global Standards

International compliance with ACS, USP, and analytical specifications for worldwide acceptance

Partnership Approach

Collaborative relationships with analytical laboratories and custom indicator development services