Trimethylphosphate-d9 | CAS 32176-12-8

OVERVIEW
Trimethylphosphate-d₉ is the fully deuterated isotopologue of trimethyl phosphate (TMP), a widely used organophosphate ester. In this compound, all nine hydrogen atoms in the three methyl groups are replaced with deuterium, yielding a molecular weight increase and a distinct isotopic signature while preserving identical chemical behavior to the non-deuterated form. The result is a stable, non-radioactive, and spectroscopically distinct molecule that plays a vital role as an internal standard, isotopic tracer, and calibration reference in analytical chemistry and environmental sciences.

Due to its high chemical stability and excellent isotopic enrichment, Trimethylphosphate-d₉ is utilized in NMR spectroscopy, GC-MS, and LC-MS studies for accurate quantification and isotopic labelling applications. Its deuterated nature allows researchers to trace phosphorus-containing compounds, evaluate degradation kinetics, and conduct mechanistic investigations with enhanced precision.

CHEMICAL INFORMATION

• Name: Trimethylphosphate-d₉

• Molecular Formula: C₃D₉O₄P

• Molecular Weight: 149.13 g/mol

• CAS Number: 32176-12-8

• Isotopic Enrichment: ≥ 98 atom % D

• Chemical Class: Deuterated phosphate ester; organophosphorus compound

• Stability: Stable under normal laboratory conditions; may hydrolyze slowly in the presence of moisture

APPLICATIONS  of  Trimethylphosphate-d9 | CAS 32176-12-8

• Internal Standard for Mass Spectrometry (MS):
  Trimethylphosphate-d₉ is widely used as an internal standard in GC-MS and LC-MS analyses for quantifying organophosphates and phosphate esters. The deuterium substitution (+9 Da) allows clear mass distinction without altering chromatographic or chemical properties.

• NMR Spectroscopy Reference Compound:
  Employed in ³¹P NMR and ¹H/²H NMR spectroscopy as a reference compound or solvent standard. Its high deuterium content reduces proton background interference, leading to improved spectral clarity and signal accuracy.

• Isotope Tracer in Reaction Mechanisms:
  Used in isotope-labelling experiments to study reaction pathways, including esterification, hydrolysis, and phosphorylation processes, providing mechanistic insights through kinetic isotope effects.

• Environmental and Degradation Studies:
  Helps researchers monitor the behavior and breakdown of organophosphate flame retardants and plasticizers in environmental samples by serving as a stable isotope-labeled analog for precise tracking.

• Calibration and Quantitative Analysis:
  Ideal for use as a calibration standard in analytical laboratories for validating analytical methods and ensuring reproducibility in the quantification of phosphorus-based compounds.

ADVANTAGES  of  Trimethylphosphate-d9 | CAS 32176-12-8

• High isotopic enrichment ensures excellent mass spectrometric resolution and reproducibility.

• Chemically equivalent to trimethyl phosphate, allowing direct comparison in analytical and mechanistic studies.

• Stable under a wide range of experimental conditions and compatible with both aqueous and organic systems.

• Non-radioactive, safe to handle, and environmentally benign isotopic label.

• Suitable for precise quantitative measurements and stable isotope tracing.

HANDLING

• Hazards: Harmful if swallowed or inhaled; may cause irritation to skin, eyes, and respiratory tract. Avoid prolonged or repeated exposure.

• Precautions: Handle in a well-ventilated area. Use protective gloves, goggles, and lab coats when handling the compound.

• Storage: Keep tightly closed in a dry and cool environment. Avoid exposure to moisture, strong acids, and bases.

• Spill Response: Absorb spills with inert material (sand or vermiculite) and dispose of in accordance with local hazardous waste regulations.

Safety Note: Though deuterated, Trimethylphosphate-d₉ has similar toxicity and reactivity to its non-deuterated counterpart and should be treated with equivalent safety precautions.

QUALITY & SPECIFICATION
Each batch of Trimethylphosphate-d₉ undergoes rigorous analytical verification to ensure purity, isotopic integrity, and consistency.

• Chemical Purity: ≥ 98 %

• Isotopic Enrichment: ≥ 98 atom % D

• Water Content: ≤ 0.05 %

• Analytical Verification: Confirmed via ¹H NMR, ²H NMR, ³¹P NMR, and high-resolution mass spectrometry (HRMS)

• Appearance: Clear, colorless liquid with no visible impurities

• COA Provided: Certificate of Analysis available for each batch confirming isotopic composition and purity levels.

SUMMARY
Trimethylphosphate-d₉ (CAS 32176-12-8) is a highly deuterated phosphate ester designed for use in analytical chemistry, spectroscopy, and isotope tracing. Its excellent isotopic purity and chemical stability make it indispensable for quantitative analysis, calibration, and mechanistic studies involving organophosphorus compounds. The compound’s reliability, reproducibility, and compatibility with advanced analytical techniques such as GC-MS, LC-MS, and NMR make it an essential reference standard in both research and industrial laboratories.