Di-n-butyl Phthalate-3,4,5,6-d4 | CAS 93952-11-5

OVERVIEW  of  Di-n-butyl Phthalate-3,4,5,6-d4 | CAS 93952-11-5

Di-n-butyl Phthalate-3,4,5,6-d₄ (DBP-d₄) is a deuterium-labeled analogue of di-n-butyl phthalate, one of the most widely monitored phthalate esters used in plasticizers, coatings, adhesives, resins, and flexible polymer systems. Because DBP is a common industrial additive and a frequent environmental contaminant, the use of a high-purity, stable isotope-labeled internal standard is essential for accurate quantification in environmental monitoring, consumer product analysis, and regulatory compliance testing.

DBP-d₄ incorporates four deuterium atoms into the aromatic ring, producing a clear mass spectral shift while maintaining the native compound’s physicochemical properties such as extraction behavior, solubility profile, and chromatographic retention. This isotopic equivalence enables precise isotope-dilution mass spectrometry (IDMS), reducing variability from matrix effects, sample preparation efficiency, signal suppression, and instrument drift. As a result, DBP-d₄ is a critical reference material used across high-sensitivity GC-MS and LC-MS platforms.

The compound is exceptionally stable, consistent, and highly reliable for long-term analytical use, making it indispensable for laboratories conducting environmental surveillance, product safety validation, toxicology studies, and advanced analytical method development.

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CHEMICAL INFORMATION

• Name: Di-n-butyl phthalate-d₄

• Molecular Formula: C₁₆H₁₈D₄O₄

• Molecular Weight: 282.37 g/mol

• CAS Number: 93952-11-5

• Isotopic Enrichment: Typically ≥98% D incorporation

• Chemical Class: Deuterated phthalate diester

• Stability: Excellent stability under standard laboratory conditions

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APPLICATIONS  of  Di-n-butyl Phthalate-3,4,5,6-d4 | CAS 93952-11-5
Di-n-butyl Phthalate-3,4,5,6-d₄ is widely used as a performance internal standard and analytical reference:

• GC-MS and LC-MS Internal Standard:
  Essential for accurate quantification of di-n-butyl phthalate in complex matrices. DBP-d₄ compensates for extraction losses, matrix suppression, injection variability, and long-run instrumental drift.

• Environmental Contaminant Analysis:
  Used for monitoring DBP contamination in soil, groundwater, sediments, wastewater, marine environments, atmospheric particulates, landfill leachates, and indoor dust.

• Consumer Product and Material Testing:
  Supports analysis of phthalate migration from plastics, toys, cosmetics, food packaging, medical devices, textiles, coatings, and flexible PVC systems.

• Regulatory Compliance Studies:
  Helps laboratories meet global regulatory requirements for phthalate monitoring in manufacturing, environmental protection, and consumer safety evaluations.

• Toxicology and Exposure Assessment:
  Used in exposure modeling, metabolite profiling, and residue analysis to evaluate human and ecological health effects associated with phthalate exposure.

• Method Optimization and Validation:
  Provides a stable anchor for method calibration, recovery testing, reproducibility studies, LOD/LOQ determination, and inter-laboratory standardization initiatives.

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ADVANTAGES  of  Di-n-butyl Phthalate-3,4,5,6-d4 | CAS 93952-11-5

• Highly Defined Isotopic Mass Shift:
  The incorporation of four deuterium atoms provides clean mass spectral separation from the native DBP, ensuring confident quantification.

• Chromatographic and Chemical Consistency:
  DBP-d₄ mimics the retention, ionization, and extraction characteristics of DBP, supporting reliable isotope-dilution workflows.

• Matrix-Effect Correction:
  Provides normalization across variable sample matrices, including environmental samples and complex consumer products.

• Superior Analytical Reliability:
  Minimizes analytical variability, enhances reproducibility, and improves precision across multi-day or multi-instrument operations.

• Versatile Method Compatibility:
  Performs robustly across GC-MS, LC-MS, and HRMS platforms, including triple-quadrupole and orbitrap systems.

• Long-Term Stability:
  Chemically robust, resistant to degradation, and suitable for long-term storage and repeated analytical runs.

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SUMMARY
Di-n-butyl Phthalate-3,4,5,6-d₄ (DBP-d₄) is a high-performance deuterated internal standard engineered for accurate quantification of di-n-butyl phthalate in environmental samples, industrial materials, and consumer products. Its isotopic precision, chemical stability, and compatibility with advanced mass spectrometric platforms make it essential for laboratories pursuing reliable, defensible, and regulatory-compliant analytical results. DBP-d₄ improves method sensitivity, compensates for matrix-related variability, and ensures accurate calibrations, supporting both routine monitoring and advanced research applications. For phthalate analysis workflows requiring reproducibility and precision, DBP-d₄ stands as an indispensable reference standard.

 

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