Potassium Hydrogen Phthalate - AR Grade Chemical Structure
AR Grade Premium
Analytical Reagent

AR Grade Potassium Hydrogen Phthalate (KHP)

Premium analytical reagent grade potassium hydrogen phthalate engineered for demanding laboratory applications including analytical standards, pH buffer preparation, and precision titrations. Our C₈H₅KO₄ delivers exceptional purity, consistent performance, and reliable supply for critical analytical procedures requiring superior primary standard properties with stringent quality control standards.

  • 99.95% Minimum Purity
  • Primary Standard Grade
  • pH Buffer Applications
  • Consistent Batch-to-Batch Quality
  • Analytical Standardization
  • Laboratory Analysis Applications
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Technical Specifications

Chemical Formula: C₈H₅KO₄
CAS Number: 877-24-7
Concentration (Assay): ≥99.95% (Primary Standard)
Physical State: White crystalline powder
Molecular Weight: 204.22 g/mol
Melting Point: 295-300°C (decomposes)
Solubility in Water: 10.9 g/L (25°C)
pH (0.05M solution): 4.00 ± 0.02 (25°C)
Loss on Drying: ≤0.05%
Insoluble Matter: ≤0.005%
Heavy Metals (as Pb): ≤0.0005%
Neutralizing Power: Exactly 1 equivalent per mole
Storage Temperature: Room temperature
Packaging Options: 100g, 500g, 1kg bottles

Applications

Primary Standard
pH Buffer (pH 4.00)
Acid-Base Titrations
NaOH Standardization
Volumetric Analysis
Analytical Chemistry
Quality Control
Educational Laboratories
Calibration Standards
Pharmaceutical Testing
Laboratory Research
Clinical Analysis

Industry-Specific Grades

DRAVYOM offers specialized potassium hydrogen phthalate grades tailored for specific analytical requirements, ensuring optimal performance and regulatory compliance across diverse laboratory applications.

Primary Standard Grade
Assay: ≥99.95% Purity: Certified Traceability: NIST Application: Standard solutions
ACS Grade
Assay: 99.95-100.05% Loss on Drying: ≤0.05% Heavy Metals: ≤0.0005% Application: ACS certified work
pH Buffer Grade
pH Value: 4.00 ± 0.02 Buffer Capacity: Optimized Stability: Excellent Application: pH standardization
Volumetric Grade
Equivalency: Exact 1:1 Accuracy: High precision Standardization: Verified Application: Titration work

Quality Standards

DRAVYOM's Primary Standard Grade Potassium Hydrogen Phthalate is manufactured under stringent quality control protocols, meeting international analytical standards including ACS, ISO, and pharmacopoeia specifications. Our primary standard-grade production ensures consistent performance and regulatory compliance.

ISO 9001:2015 Certified Manufacturing
Primary Standard Grade
≥99.95% Assay Purity
Advanced Analytical Testing
Superior Buffer Capacity
Batch-to-Batch Consistency
Traceable Certificate of Analysis
NIST Traceable Standards

Advanced Chemical Properties & Performance

AR Grade Potassium Hydrogen Phthalate exhibits exceptional analytical properties essential for pH standardization and acid-base titrations. Its ultra-pure composition and precise buffering characteristics ensure reliable performance in demanding analytical procedures and calibration protocols.

Chemical Properties
Molecular Formula: C₈H₅KO₄
Molecular Weight: 204.22 g/mol
pH Standard: NIST SRM 185h
pKa Value: 5.408 at 25°C
Physical Properties
Appearance: White crystalline powder
Melting Point: 295-300°C (decomp.)
Solubility (25°C): 12.7 g/L in water
Density: 1.636 g/cm³
pH Standard Properties
pH (0.05 M, 25°C): 4.005 ± 0.003
Temperature Coefficient: -0.0001 pH/°C
Buffer Capacity: Good near pH 4-6
Ionic Strength: Low interference
Purity Specifications
Chemical Purity: ≥99.95%
Water Content: ≤0.05%
Heavy Metals: ≤2 ppm
pH Accuracy: ±0.003 pH units
Stability Properties
Shelf Life: Indefinite (unopened)
Solution Stability: 1 month refrigerated
pH Stability: Excellent long-term
Light Stability: Stable under normal light

Performance Characteristics

Detailed performance metrics demonstrate AR Grade Potassium Hydrogen Phthalate superiority in analytical applications with exceptional pH accuracy, NIST traceability, and reproducibility across diverse calibration procedures and standardization protocols.

pH Accuracy

Standard: 4.005 ± 0.003

NIST certified precision
Temperature Stability

Coefficient: -0.0001 pH/°C

Minimal temperature effect
Buffer Performance

Range: pH 4-6 optimal

Effective buffering capacity
Working Temperature

Range: 0-50°C calibrated

Wide temperature validity
Reproducibility

RSD: ≤0.05% pH measurements

Outstanding precision
Standard Stability

Indefinite dry storage integrity

Permanent reference standard

Safety Information

Generally considered low hazard material. May cause mild skin and eye irritation. Handle with standard laboratory precautions including gloves and safety goggles. Use in well-ventilated areas and avoid inhalation of dust particles.

Low Hazard
Eye Protection
Standard Precautions

Storage & Handling

Store in original containers in a cool, dry place protected from moisture. Keep containers tightly closed and use clean analytical techniques. Prepare standard solutions fresh for optimal pH accuracy.

Cool, dry storage
Moisture protection
Glass containers preferred
pH standard protocols

Chemical Mechanisms & Reaction Pathways

Potassium hydrogen phthalate exhibits primary standard properties and buffer characteristics through multiple reaction pathways, enabling precise analytical applications including acid-base titrations and pH standardization.

Acid-Base Reactions

KHC₈H₄O₄ + NaOH → KNaC₈H₄O₄ + H₂O (1:1 stoichiometry)

Primary standard for base standardization
Buffer System

Phthalic acid/hydrogen phthalate buffer system (pKa = 5.41)

pH control and calibration applications
Dissociation Equilibrium

HC₈H₄O₄⁻ ⇌ H⁺ + C₈H₄O₄²⁻ controlled pH behavior

Predictable analytical performance
Crystalline Stability

Stable hydrated crystalline form with consistent composition

Reliable primary standard properties

Regulatory Compliance & Documentation

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

ACS Specifications

American Chemical Society analytical reagent standards compliance

ISO 6353 Standard

International standard for reagent specifications and testing

Primary Standard Certification

Certified as analytical primary standard for volumetric analysis

REACH Registration

European Union chemical regulation compliance

USP Grade Available

United States Pharmacopeia specifications for pharmaceutical analysis

SDS Documentation

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

Technical Support & Value-Added Services

DRAVYOM's analytical chemistry team provides comprehensive titration support, standardization assistance, and analytical services to optimize AR Grade Potassium Hydrogen Phthalate performance in your analytical applications.

Titration Method Development
  • Endpoint determination optimization
  • Indicator selection guidance
  • Titration curve analysis
  • Standardization protocols
Analytical Services
  • Certificate of Analysis verification
  • Primary standard validation
  • Purity determination
  • Water content analysis
Technical Support
  • Volumetric analysis consultation
  • pH measurement guidance
  • Troubleshooting assistance
  • Quality control protocols
Buffer Services
  • Buffer preparation protocols
  • pH calibration standards
  • Stability testing
  • Custom buffer formulations

Environmental Impact & Sustainability

Our AR Grade Potassium Hydrogen Phthalate production emphasizes environmental responsibility through sustainable manufacturing practices and comprehensive environmental impact management for analytical laboratory operations.

Emission Control

Advanced containment systems for organic vapor capture

Solvent Recovery

Comprehensive solvent recycling and recovery programs

Clean Production

Green chemistry principles in synthesis processes

Safe Disposal

Biodegradable organic compound with safe disposal protocols

ISO 14001

Environmental management system certified production

Container Recycling

Glass container return and recycling programs

Manufacturing Excellence & Quality Control

DRAVYOM's specialized analytical reagent manufacturing facility employs advanced synthesis technology with continuous monitoring systems to ensure consistent AR Grade Potassium Hydrogen Phthalate quality and primary standard performance.

Production Process

Controlled crystallization with purification and drying protocols

Primary standard purity and stability
Quality Testing

22-point analytical testing protocol including purity and water content

Titrimetric and Karl Fischer verification
Quality Systems

ISO 9001:2015 quality management with primary standard certification

Continuous improvement and validation
Packaging Control

Moisture-resistant containers with desiccant protection

Stability maintenance and contamination prevention

Market Applications & Performance Data

Comprehensive analytical laboratory data demonstrating AR Grade Potassium Hydrogen Phthalate effectiveness across diverse applications with quantified performance metrics and analytical method validations.

Titration Applications
Precision: ±0.005% RSD in standardization Primary Standard: 99.98%+ purity Stability: >5 years under proper storage
Research Institutions
Publication Support: 1500+ cited methods Reproducibility: >99.9% inter-lab agreement Innovation: Advanced titration protocols
Quality Control Labs
Reliability: 99.9% batch consistency Audit Success: 100% regulatory compliance Efficiency: 40% faster standardization

DRAVYOM Competitive Advantages

Primary Standard Excellence

Consistently exceeds ACS specifications with exceptional purity and analytical performance

Reliable Supply

Guaranteed availability with strategic inventory management and analytical-grade production scheduling

Analytical Expertise

Dedicated acid-base chemistry team provides standardization and method development support

Quality Assurance

Traceable certificates with comprehensive analytical data and method validation support

Global Standards

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

Partnership Approach

Collaborative relationships with analytical laboratories and custom standardization solutions