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Tri-o-tolyl phosphate

SIAL/51885 - analytical standard

Synonym: NSC 438; Phosphoric acid tris(2-methylphenyl) ester; TOTP; Tri-o-cresyl phosphate

CAS Number: 78-30-8
Empirical Formula (Hill Notation): C21H21O4P
Molecular Weight: 368.36
MDL Number: MFCD00041906
Linear Formula: C21H21O4P
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-51885-250MG 250 mg
 $82.00
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application(s) environmental
assay ≥97.0% (HPLC)
format neat
grade analytical standard
impurities ≤0.5% water
InChI 1S/C21H21O4P/c1-16-10-4-7-13-19(16)23-26(22,24-20-14-8-5-11-17(20)2)25-21-15-9-6-12-18(21)3/h4-15H,1-3H3
InChI key YSMRWXYRXBRSND-UHFFFAOYSA-N
Quality Level 100 
refractive index n20/D 1.559-1.563
shelf life limited shelf life, expiry date on the label
SMILES string O=P(OC1=C(C)C=CC=C1)(OC2=C(C)C=CC=C2)OC3=CC=CC=C3C
storage temp. 2-8°C
Application: Tri-o-tolyl phosphate may be used as an analytical reference standard for the determination of tri-o-tolyl phosphate in:
• Surface water and wastewater effluent samples by liquid chromatography coupled to tandem mass spectrometry equipped with electrospray ionization (LC-ESI-MS/MS) operating under the multiple reaction monitoring (MRM) mode of detection.
• Human hair and nails by liquid-liquid extraction (LLE) and gas chromatography-mass spectrometry (GC-MS).
• Indoor air, dust and window wipes by GC-MS/MS.
• Outdoor air samples by ultra-performance liquid chromatography coupled to triple quadrupole mass spectrometry (UPLC-QqQ-MS/MS) equipped with ESI source and MRM detection.
General description: Tri-o-tolyl phosphate is classified under the class of non-halogenated organophosphate esters (OPEs).
Recommended products: Find a digital Reference Material for this product available on our online platform ChemisTwin®  for NMR. You can use this digital equivalent on ChemisTwin®  for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here  and start your free trial .
Purity ≥97.0% (HPLC)
Refractive Index n20/D 1.559-1.563
Storage Temp. 2-8°C
UNSPSC 77101502

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